Ultra Aid Station Strategy: In and Out Fast
Ultra Aid Station Strategy: How to Get In and Out Fast Without Bonking 20 Miles Later¶
The race is not lost on the climbs. It is lost in the chairs.
A 100-miler with 12 aid stations and an 8-minute average stop costs you 96 minutes — over an hour and a half of stationary time spread across a long, hot day. Cut that to 3 minutes per stop and you save an hour. Same fitness, same nutrition, same legs. One hour saved. That is the difference between a 24-hour buckle and a 25:30 finish.
But cut the time too aggressively and you leave with half-filled bottles, no real-food calories in your stomach, and a small grit problem in your left shoe that will become a dollar-coin blister at mile 78. Now you are sitting in a chair at the next aid station, and that chair is going to take 20 minutes.
This is the trade nobody talks about: aid station efficiency is not about going fast. It is about leaving each station with everything you need to reach the next one without compounding errors. Get this wrong and you bonk 20 miles downstream from the mistake.
What you will learn:
- Why aid station mistakes show up 2 to 3 hours later, not immediately
- The pre-arrival mental checklist that prevents 80% of the chaos
- A 4-step in-station workflow that runs in under 5 minutes
- How to handle crewed vs unsupported aid stations differently
- When sitting down is smart and when it is the start of a DNF
Why Aid Stations Decide Ultra Outcomes¶
In a marathon, the work is the work. You run 26.2 miles, you stop, you eat. There is one fueling problem and you can solve it on the move with a couple of gels.
In an ultra, the aid station is not a side activity. It is half the race. You will spend 30 to 90 minutes of total time in or near aid stations during a 100-miler, and every one of those minutes is a decision point. Did you drink enough? Are you eating real food yet? Is that hot spot worth dealing with now or in 12 miles when it is a blister? Did your crew remember the headlamp?
Most ultra runners do not lose to the course. They lose to a series of small choices made while standing in front of a folding table covered in M&Ms and pickles, with their pacer asking three questions at once and a volunteer holding out their drop bag.
The Downstream Bonk¶
The dangerous thing about aid station mistakes is that they do not punish you immediately. The cost is delayed.
You leave aid station 4 with 16 ounces of water instead of 24 because the line at the jug was long and you were impatient. The temperature is 78°F. The next section is 9 miles, mostly exposed ridge. You run out of water at mile 7 of that section. You walk the last two miles dehydrated, your stomach closes, and now at the next aid station you cannot eat.
The bonk shows up around the time you started feeling bad — 2 hours after the actual mistake. Most runners never connect the two events. They blame "hitting a low patch" or "the heat." The actual cause was a 90-second decision two aid stations ago.
This is why ultra runners talk about racing in chains. Every aid station hands you the conditions for the next 60 to 120 minutes. Mess up the handoff and the consequences arrive later, when you have less margin to recover.
The same logic explains why a tiny problem ignored at mile 30 — a hot spot you did not tape, a half-rinsed sock, an extra gel you skipped — becomes the reason you DNF at mile 75. You did not blow up at 75. You blew up at 30 and just did not feel it yet.
The Pre-Arrival Checklist (Run This 10 Minutes Out)¶
The single biggest gain in aid station efficiency is mental preparation done before you arrive. By the time you can see the tents, your plan should already be made.
About 1 mile or 10 minutes from the aid station, run through this internal checklist. It takes maybe 30 seconds and saves 3 to 5 minutes of confused fumbling later.
1. Inventory check. What do I have left? Water remaining (in ounces, not "some"), gels remaining, salt remaining. Be specific. "I have one bottle and three gels" is information. "I'm fine" is not.
2. Section forecast. How long until the next aid station? What is the elevation profile? What is the temperature about to do? A 6-mile climb in rising heat needs different supplies than a 6-mile rolling descent in shade.
3. Body audit. Run a quick scan from feet up. Toes — any rubbing? Calves — any cramping signals? Stomach — empty, full, or unsettled? Hot spots, chafing, anything that needs attention? Note the issues now so you can deal with them at the station instead of discovering them later.
4. Top-3 list. Pick the three things you must accomplish at this aid station. Not eight. Three. For example: refill both bottles, eat 200 calories of real food, swap to a clean pair of socks. Anything beyond three and you will forget something.
5. Loosen and prep. When you can see the aid station, take your bottles out, loosen the lids, unzip the pocket where your gels live. Have your pack unstrapped or ready to come off in one motion. The goal is to arrive with hardware in hand, not buried under three layers.
This 30-second pre-arrival ritual is the difference between an aid station that takes 7 minutes and one that takes 3.
The 4-Step In-Station Workflow¶
When you cross the timing mat or hit the threshold of the aid station, you are now executing, not deciding. Decisions were made 10 minutes ago. The order matters because some steps gate others.
Step 1: Hand Off Bottles, Then Move (0 to 30 seconds)¶
The first 30 seconds are dedicated to fluid because hydration takes the longest at most aid stations and creates the longest queue. Hand your bottles to a volunteer or your crew immediately and tell them exactly what goes in each one — "water in this one, electrolyte in this one." Then walk away to handle other tasks. Do not stand there watching them pour.
If the aid station has a self-serve setup, fill bottles first and prep them while you do everything else. Liquid logistics are the throttle.
Step 2: Calories Down While Standing (30 to 90 seconds)¶
While your bottles are being filled, eat. This is the aid station's main job — to deposit calories into a stomach that has been rejecting gels for the last hour. Real food is your goal here: a quarter potato in salt, a few orange slices, a quesadilla wedge, a handful of pretzels.
Aim to eat 150 to 300 calories at the station itself, separate from anything you carry out. The math: if you are burning 400 to 600 calories per hour on rolling trail and absorbing 200 to 300, every aid station bite is buying back deficit. Skip the bites and the deficit compounds at the rate of about 200 calories per hour.
You do not need to eat fast. You need to eat at all.
Step 3: Body Maintenance (90 to 180 seconds)¶
Now address the issues you flagged in your body audit. In rough priority order:
- Feet first. A grit removal, a sock change, or a tape job at minute 2 saves you a chair-and-shoes-off operation at minute 15 of the next stop. Do it now.
- Chafing. A 5-second swipe of Squirrel's Nut Butter or Body Glide on a sore spot is cheap insurance.
- Layers. Are you about to climb out of shade into sun? Drop the long sleeve in your drop bag. About to descend into a cold canyon at dusk? Pull on a layer now, not a mile from the next aid station. Night transitions are their own decision: if dusk is before the next aid station, the headlamp goes on your head right now, not in your pack.
- Heat tools. In a hot race, ice is the most valuable thing on the table. Ice in a sock around the neck, ice under the hat, ice in a bandana pinned to your collar — all extend your usable hours. Plan ahead which aid stations have ice and arrive ready to take it.
- Poles. If you run with poles, collapse them at the entrance and prop them somewhere the volunteers will not trip over them. Hand them to your crew if you have one. Reattach them last, after the pat-down.
- Bathroom. If you need to go and there is a port-a-potty here, go. Do not save it for "later" — later means a bush off-trail with no toilet paper.
Skip what does not need attention. Do not look for problems. The body audit told you what mattered.
Step 4: Resupply and Pat-Down (180 to 270 seconds)¶
Final step before you leave: pull from your drop bag or crew bag what you need for the next section. Replace gels you used. Grab the headlamp if it is going to be dark before the next aid station. Restock salt tablets.
Then a 10-second pat-down. Vest fastened. Bottles in. Gels in pocket. Hat. Glasses. Headlamp. Phone. Poles if you brought them. Pacer if you have one. The pat-down is non-negotiable. More races have been ruined by leaving the headlamp at mile 50 than by anything else.
Total time, executed cleanly: under 5 minutes for a major aid station, under 2 minutes for a minor one.
When the Stomach Shuts Down¶
The aid station strategy above assumes you can still eat. At some point in most 100-milers — and many 50-milers — your stomach will close. You sit down at mile 65 in front of a plate of food and the idea of swallowing anything makes you nauseous. This is the most common reason runners over-stay at aid stations and the most common precursor to a DNF.
Stomach shutdown is rarely random. It is almost always one of three things:
- Pacing too hard. Hard effort shunts blood away from the gut. Slow down for 30 minutes and digestion often comes back online.
- Dehydration or heat. A dehydrated gut cannot process concentrated sugar. Cool water, a wet bandana, and a few minutes of walking often unlock the stomach.
- Sweetness fatigue. After 8 to 12 hours of gels and sport drink, many runners' stomachs reject anything sweet. The fix is salt, not more sugar.
When the stomach is closed, the goal is no longer "eat 250 calories at this station." The goal is "get something — anything — down and walk out moving." Your toolkit:
- Broth and salt. Hot chicken broth, miso, or salty potatoes are tolerated by almost everyone. Calories are low but they reopen the gut.
- Coke and ginger ale. Flat or fizzy. The combination of caffeine, sugar, and carbonation is the most reliable stomach-restart drink in ultra running. Most aid stations have it.
- Ginger chews and saltines. Slow nausea, neutral on the stomach, easy to nibble while walking out.
- Ice chips. When you cannot face liquid, ice chips will keep you cool and slowly hydrate without overwhelming the gut.
The protocol when nauseous: do not sit and wait. Sip 4 ounces of Coke or broth, take a piece of ginger, and walk out for 15 minutes at a pace that feels like nothing. The stomach will often re-open while you are walking, not while you are sitting. If you sit and wait, you cool down, lose mental momentum, and the chair becomes the problem.
If nausea is paired with disorientation, slurred speech, vomiting that will not stop, or a core temperature problem, that is no longer a fueling issue. That is medical. See the section below.
Crewed vs Unsupported Aid Stations¶
The aid station playbook changes depending on whether you have crew. Run the wrong script and your crewed stops become the slowest of the day.
When You Have Crew¶
Crew is a force multiplier when they are organized and a time sink when they are not. The protocol:
- One person leads the handoff. Your crew chief is the only person you talk to. Everyone else hands things to the chief, who hands them to you. Three people asking you questions at once is how you forget your headlamp.
- Crew comes to you, not the other way around. They walk the bottles to the trail edge so you do not detour to the parking lot. Save every step.
- Walk while you work. Many things — eating a wrap, swallowing salt, hearing the next-section forecast — can happen while you are still moving slowly down the trail. Standing is the enemy.
- No emotional check-ins. Tell your crew before the race: "Do not ask me how I'm feeling at aid stations." If you need to tell them something, you will. Otherwise, the answer is always 'I'm fine, what do I need next.'
A well-drilled crew turns a 7-minute aid station into a 90-second moving handoff. An unprepared crew turns it into a 15-minute group conversation about whether you should drop.
When You Are Unsupported¶
No crew, no drop bags at this aid station, just you and the volunteer table. Your strategy shifts:
- Pre-pack what is on the table. Most race websites publish an aid station list ahead of time. Know what is available where. If aid station 5 has tailwind and aid station 7 only has water, plan to load tailwind at 5.
- Ask once, scan once. Walk in, scan the table left to right, ask the volunteer "what's hot? what's salty?" then commit. Do not wander.
- Bottles down, hands free. Hand off bottles to the volunteer the moment you arrive. Self-service refills cost real time and you will spill.
- Pocket food. Take 200 to 400 calories of pocketable food with you — pretzels, a wrap, a few salted potatoes — even if you ate at the station. Calories on you are worth more than calories you remember from the table.
Unsupported runners can absolutely match crewed runners on aid station efficiency. The ones who fall behind are the ones who treat each station as a problem to solve from scratch.
When Sitting Down Is Smart (and When It Is the End)¶
There is a rule among ultra veterans: every minute in a chair costs you 5 minutes on the trail. The rule is roughly true and it leads many runners to never sit down at all. That is also a mistake.
The right framework: sit down for a reason, not for relief.
Sit down when:
- You are doing real foot work — taping a blister, changing socks, addressing a hot spot. Doing this standing is how you do it badly.
- You need to eat a substantial real-food meal that you cannot stomach standing. Soup, ramen, a full sandwich. 5 minutes seated to get 400 calories down is a fair trade.
- It is below freezing or pouring rain and you need a clothing reset that requires both hands.
- You genuinely need to reset mentally for under 5 minutes. Not to "feel better." To execute a specific recovery — a piece of caffeine, a bathroom break, a deep breath, then up.
Do not sit down when:
- You are just tired. Everyone is just tired. Sitting down does not fix tired.
- You feel "weird" and want to "see how you feel in a few minutes." That weird feeling is information. The information is that you need calories or salt, not a chair.
- Your crew is sitting and the chair is right there. Crew comfort is not your scoreboard.
- You are looking for a reason to drop. If you sit down looking for a reason to drop, you will find one. Stand up first, then make the decision.
The veterans you see efficiently in and out at aid stations are not gritting through. They have a rule about chairs and they follow it.
One Exception: Medical Is Not Bonking¶
The "do not drop at the aid station, eat and walk out 15 minutes" rule applies to feeling bad. It does not apply to a real medical situation.
A structural injury that is getting worse with every mile, a core temperature problem (hypothermia or hyperthermia symptoms), persistent vomiting that prevents any fluids, vision or coordination problems, chest pain — these are not bonk problems and they will not resolve with a sandwich and 15 minutes of walking. The aid station medic exists for exactly this. Use them.
The protocol: if you are not sure whether what you are feeling is a bonk or a medical issue, ask the medic. They will not pull you for being tired. They will pull you only if you genuinely should not continue. Letting them assess takes 5 minutes and could save your race or your life. The runners who get into trouble are the ones who refuse to talk to the medic because they are afraid of being pulled.
How NavRun Fits Into Aid Station Planning¶
A few honest words on where NavRun helps and where it does not.
NavRun's race management feature lets you build a goal-time race plan and break it into sections between aid stations, so you can carry rough time windows for "when do I reach the next station?" instead of doing math at mile 60. For technical mountain courses with serious elevation, treat those windows as ranges, not pace targets — and adjust them against your own race-day reality.
For training, the AI-powered training plans build long runs you can use to practice fueling and pre-arrival checklists every weekend, so race day is execution rather than experimentation.
After the race, NavRun's analytics compare your section-by-section moving time to your plan. If you spent 8 minutes at every aid station instead of 4, the data shows you where time was lost — and you can rebuild your protocol for the next race.
NavRun is free to try. Connect your Strava and you are running smarter inside of 5 minutes.
Common Questions¶
Q: What is a realistic aid station time for a 100-miler?¶
For an experienced runner, average 2 to 5 minutes for minor stations and 5 to 8 minutes for major ones (drop bag stations, pacer pickups). Across 12 to 15 aid stations, that totals 45 to 90 minutes of stationary time. First-time 100-milers often spend 90 to 150 minutes total, which is normal but a real opportunity for veterans.
Q: Should I sit down at every aid station?¶
No. Sit down only when you have a specific job that requires sitting — foot work, a substantial meal, a clothing reset in extreme conditions. Sitting "to rest" almost always costs more than it returns. The rule of thumb is: sit for a reason, not for relief.
Q: What food should I eat at aid stations vs carry on me?¶
Aid station food should be things you cannot easily carry — soup, ramen, watermelon, hot food, fresh fruit. Pocket food should be calorie-dense, shelf-stable, and pre-tested in training — gels, gummies, pretzels, a wrap. The aid station is for recovery calories you eat there. The pocket is for the next 60 to 90 minutes of running.
Q: How do I avoid forgetting things at aid stations?¶
Use the pat-down. Before you leave any aid station, run through a fixed list out loud or in your head: bottles, gels, hat, glasses, headlamp, salt, phone, poles, pacer. Same order every time. The pat-down takes 10 seconds and prevents the most expensive mistakes — leaving without your headlamp, your salt tabs, or your pacer.
Q: What if I feel terrible at an aid station?¶
Do not make the drop decision at the aid station. Stand up, eat 300 calories of real food, drink 16 ounces of fluid, and walk out for 15 minutes. Then reassess. Most "I want to drop" feelings at aid stations are bonking, not a real reason to quit. The aid station is the worst place to make a rational decision because everything is comfortable and your trail brain is offline.
Q: How early should I tell my crew what I need?¶
Before the race, give your crew a written script for each aid station — what to have ready, what to ask, what not to ask. Then on the trail, radio (or shout) the actual needs about 30 seconds before you arrive: "I need both bottles, two gels, the long sleeve, ramen if you have it." That 30-second heads-up turns a slow handoff into a fast one.
Q: Do drop bags belong at every aid station?¶
No. Put drop bags at major aid stations only — typically every 15 to 25 miles for a 100-miler, every 10 to 15 miles for a 50-miler. Too many drop bags means you waste time looking for the wrong one. Pack each one ruthlessly: only what you need for the next section, plus one emergency item (warm layer, headlamp, fresh socks).
Q: How much time can I really save with a better aid station strategy?¶
For a 100-miler with 12 aid stations, the difference between 8-minute average stops and 3-minute average stops is 60 minutes — a full hour. That hour is unrelated to your fitness. It is purely execution. For most age-group runners, that hour is the difference between a target finish and a missed one.
Key Takeaways¶
- Aid station mistakes show up 2 to 3 hours later, not immediately. Underfilling a bottle at mile 30 becomes a bonk at mile 40.
- Pre-arrival prep saves more time than in-station speed. Run the inventory, forecast, body audit, and top-3 list 10 minutes out.
- Use the 4-step workflow: bottles first, calories second, body maintenance third, resupply and pat-down last.
- Sit down for a reason, not for relief. Foot work, real food, weather reset — yes. "I'm tired" — no.
- Crew is a force multiplier when organized and a time sink when not. One leader, walking handoffs, no emotional check-ins.
Aid stations are the part of ultra running with the highest leverage and the lowest training. Most runners do thousands of miles of fitness work and never rehearse a 5-minute aid station. Fix that and you save an hour with no extra training.
Run Smarter Ultras¶
Aid station execution is part of a bigger picture: race-day strategy that connects your training, fueling, and pacing into one plan that survives contact with the trail.
NavRun's race management feature builds section-by-section pacing and aid station targets from your course and goal time, so you arrive at every station already knowing what comes next. Combined with AI training plans and post-race analytics, you end the season with a feedback loop instead of a stack of guesses.
Free to try. Connect your Strava and start in under 5 minutes.