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Ultras · US · CO

Leadville Trail 100 Run

2026 Life Time Leadville Trail 100 Run presented by La Sportiva
Leadville Trail 100 Run · 99.7M
Course changed
The route is not the one it was. Read the race's own notice before you plan. The Willow Fire (July 2026) burned Hagerman Pass Road, Sugarloaf Mountain and Powerline, all on the traditional course, and the USFS/BLM permitting agencies required a reroute. Race-director letters on 7/15/26 and 7/31/26 confirmed the season would proceed with 'courses [that] will look different' and promised final Run course maps by Friday 8/14/26 and crewing/aid-station info by Tuesday 8/18/26. The 2026 course now goes around Turquoise Lake by a different path and rejoins the traditional course at the Outward Bound aid station; Hagerman Pass Road, Sugarloaf and Powerline are not run in 2026.
Race dateAugust 22-23, 2026
Duration2 days
Start4:00am
Whentoday
First held1983
Official website Entry Lottery Results Aid stations
Free, and always will be. NavRun makes money from race-day planning for runners who want it, never from this. Ultras change constantly, sometimes the morning of. Always confirm with the race director and the official website before you rely on anything here.
Distance 99.7M
Climb 13,357 ft
Descent not checked yet
High point 12,500 ft
Time limit 30:00:00
Aid stations 14
Started not checked yet
Finished not checked yet
Finish rate not checked yet
The course

Where it goes out and back · 14 aid stations

No official GPX on file yet. These are the aid station coordinates, not the trail. Have the GPX? Send us the link.

The 2026 course, rerouted around the Willow Fire burn area. Runners head west from Harrison Avenue, out and around Turquoise Lake (the reverse side from the traditional route) via new Carter Summit Mini Aid and Turquoise Lake Dam aid stations, then rejoin the traditional course at Outward Bound. Hagerman Pass Road, Sugarloaf Mountain and Powerline (all traditional-course features, all within the fire's burn area) are not run in 2026. From Outward Bound onward the course matches the traditional route: Half Pipe, Twin Lakes Village, up and over Hope Pass to the Winfield turnaround, then back the same way.

The race

What this one is

A 99.7-mile out-and-back trail ultramarathon starting and finishing at the corner of 6th Street and Harrison Avenue in Leadville, Colorado, out to a turnaround at Winfield and back, crossing Hope Pass (12,500 ft) twice. Starts at 4:00 a.m. with a 30-hour limit; sub-25-hour finishers earn the big belt buckle, sub-30-hour finishers the small buckle.

First held in 1983 as the 'Race Across the Sky,' created by local miner Ken Chlouber with Merilee Maupin to bring tourism and economic revival to Leadville after the closure of the Climax Mine. 45 runners started the first race. It grew into the Leadville Race Series, which now also includes the Leadville Trail 100 MTB, Silver Rush 50, Leadville Trail Marathon & Heavy Half, Leadville 10K and the Leadville Stage Race. The Leadville Trail 100 Legacy Foundation, a nonprofit created by Chlouber and Maupin in 2002, funds community needs and an annual $2,000 scholarship to graduating Lake County High School seniors.

Getting in

Getting in Entry, lottery and what the race asks of you before race day.

Lottery
Yes
Lottery opens
Dec. 1, 2025 leadvilleraceseries.com
Lottery draw
Jan. 8, 2026 leadvilleraceseries.com
Field cap
not checked yet
Registration
Race website leadvilleraceseries.com
Qualifying
No fixed time-standard qualifier; entry is via an annual lottery (see edition), Leadville Race Series qualifier races (Leadville Trail Marathon, Silver Rush 50 Run, Austin Rattler Run) awarding a minimum of 35 coins per event by overall/age-group finish plus a post-race lottery, the LT100 Run Camp + Entry package, Boundless Coaching coaching + entry packages, official charity partner slots, or Life Time Club-Access member priority registration. leadvilleraceseries.com
Minimum age
18 leadvilleraceseries.com
Transfers
No leadvilleraceseries.com
Deferrals
Yes leadvilleraceseries.com
Crew, pacers and drop bags

The rules that shape your day Anything marked "not checked yet" is a gap in what we hold, never a no from the race.

Crew allowed
Yes leadvilleraceseries.com
Vehicles per runner
not checked yet
Pacers
Yes, from mile 64.00 leadvilleraceseries.com
Muling
Allowed leadvilleraceseries.com
Drop bags
Yes leadvilleraceseries.com
Cupless
not checked yet
Course marking
Fully Marked leadvilleraceseries.com
Night running
Yes leadvilleraceseries.com
Dogs
not checked yet
Headphones
not checked yet
Crew rules
Exactly 3 official crewing locations in 2026: Outward Bound, Pipeline Alternate, and Twin Lakes Village; runners pass each twice. Crewing outside these 3 locations is against official rules and may disqualify the runner. Color-coded wristbands (Twin Lakes green, pacer yellow; no wristband needed at Outward Bound) mark crew access; kids 10 and under are exempt. Twin Lakes Village has no driving access -- crews must use the continuous shuttle running from Outward Bound, 6:00am-11:00pm (or until all crews are returned). Crews may support any registered athlete, not just their own. Crews must follow Lake/Chaffee County laws and all race staff/volunteer/enforcement instructions; grounds for the runner's disqualification include crewing outside the 3 locations, littering, illegal parking, and arriving to camp before race day. leadvilleraceseries.com
Pacer rules
Pacers may join beginning at Twin Lakes Village inbound, mile 64. Each runner gets 2 pacer bibs at packet pickup; extra pacers require transferring a bib or picking one up at Twin Lakes Village, Half Pipe (no vehicle access -- hike or bike in), Outward Bound, or Turquoise Lake Dam (no bib pickup at Pipeline). Only one pacer at a time is allowed until mile 99, though a runner may use as many different pacers as they wish across the race. Every pacer must complete a waiver (online, printed, or at a checkpoint) before going on course. Pacers may act as burros to carry food/equipment for their runner but may not push, pull, carry or tow them, use a vehicle or bicycle, take aid from a vehicle, or camp overnight on course. Special pacing accommodations (e.g. a blind runner) require pre-approval from race management. leadvilleraceseries.com
Drop bag rules
Drop bags accepted Friday 11:00am-5:00pm at 316 Harrison Ave (Leadville Race Series Retail Store) for 5 on-course locations: Turquoise Dam, Outward Bound, Half Pipe, Twin Lakes, and Winfield. Every location except Winfield is passed twice, so the race suggests sending two bags together, one for each direction. Bags must be CLEAR plastic, labeled in large letters with bib number, name, and aid station; liquids must be in leak-proof, non-breakable containers. Return window is Sunday ~8:00am-5:00pm at the same retail store; unclaimed bags after 5:00pm Sunday are donated to local charities and are not mailed. leadvilleraceseries.com
Cutoff philosophy
Two finish times, both worth a buckle: finish within 25 hours (chip time) for the big belt buckle, or within 30 hours (chip time) for the small buckle and official finisher status. Intermediate aid-station cutoffs are measured on gun time (from the 4:00am start regardless of a runner's actual start-line crossing time), while buckle eligibility is measured on chip time (a runner's own elapsed time). leadvilleraceseries.com
Aid stations

Every stop, and what you get there ● yes   · no   ? nobody has checked

Mile Station Cutoff Crew Bag Pacer Med To next
0.00 Start / Finish (6th St & Harrison) ? ? ? ? ? 10.60
10.60 Carter Summit Mini Aid ? · · ? ? 9.90
20.50 Turquoise Lake Dam 10:15am · ● ? ? 5.50
26.00 Outward Bound 11:15am ● ● ? ? 5.80
31.80 Half Pipe 12:15pm · ● ? ? 8.50
40.30 Twin Lakes Village 2:15pm ● ● ? ? 5.10
45.40 Hope Pass (outbound)
12,500 ft
 4:45pm · · ? ? 6.80
52.20 Winfield 6:50pm · ● ? ? 6.80
59.00 Hope Pass (inbound)
12,500 ft
 ? · · ? ? 5.00
64.00 Twin Lakes Village (inbound) 11:00pm ● ● ● ? 8.60
72.60 Half Pipe (inbound) 2:00am · ● ? ? 5.70
78.30 Outward Bound (inbound) 3:45am ● ● ? ? 5.90
84.20 Turquoise Lake Dam (inbound) 5:30am · ● ? ? 15.50
99.70 Finish (6th St & Harrison) 10:00am ? ? ? ? ?
Same race, other lines

Other distances and other years

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