Leadville Trail 100 Run
2026 Life Time Leadville Trail 100 Run presented by La Sportiva
Leadville Trail 100 Run (traditional course, not run in 2026) · 99.7 miles
Not offered in 2026
This course is not part of the 2026 race. What follows is how it has been run before, not this year's route. 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
When55 days ago
First held1983
Who's going to Leadville Trail 100 Run?
Free. You can start with nothing.
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
99.7 miles
Climb
15,492 ft
Descent
not checked yet
High point
12,526 ft
Time limit
30:00:00
Aid stations
13
Started
not checked yet
Finished
not checked yet
Finish rate
not checked yet
The course
Where it goes
out and back · 13 aid stations
The traditional Leadville Trail 100 Run course, most recently run in 2025 and described in the race's own (stale, still-live) '2025 RACE WEEK RUNDOWN' page block and its packing-list page. Out and back from 6th & Harrison in Leadville, over Mayqueen (mile 12.4), Hagerman Pass Road, Sugarloaf Mountain and the Powerline climb to Outward Bound, Half Pipe, Twin Lakes Village, and twice over Hope Pass to the Winfield turnaround. NOT run in 2026: Hagerman Pass Road, Sugarloaf Mountain and Powerline are inside the Willow Fire burn area and closed for the foreseeable future, so the 2026 race instead uses the rerouted course filed separately in this same edition.
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
leadvilleraceseries.com
- 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
-
not checked yet
- Minimum age
-
18
leadvilleraceseries.com
- Transfers
-
No
leadvilleraceseries.com
- Deferrals
-
Yes
leadvilleraceseries.com
Running, crewing, pacing or still deciding
How NavRun helps with Leadville Trail 100 Run
Thirty hours, and ten stations with a clock on each.
You are running it
You reach Twin Lakes Village, mile 37.9, before its 1:30pm cutoff, and you already knew that this morning.
An arrival time for all 11 stations, worked out from your own training.
Start free →
You are pacing
You are at Twin Lakes Village (inbound), mile 61.8, warm and fed, and you know you have 38 miles ahead of you.
The same sheet says when they reach you.
You are deciding
You find out Leadville Trail 100 Run is months of work away, not years, and you put your name in the lottery.
Put in a race you have already run. NavRun shows you where this one sits from where you are.
No account needed →
Crew access, 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 61.80
leadvilleraceseries.com
- Muling
-
not checked yet
- 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
-
4 official crewing locations (vs. 3 on the 2026 rerouted course): Outward Bound, Pipeline, Twin Lakes Village, and Mayqueen. Runners pass each twice. Wristbands: Twin Lakes green, Mayqueen blue, pacer yellow; kids 10 and under exempt. At Mayqueen, only 4 crew members + 1 pacer allowed per athlete, traffic moves clockwise around the lake only, and access is from the south/Turquoise Lake dam side. Twin Lakes has no driving access; crews shuttle from Outward Bound.
leadvilleraceseries.com
- Pacer rules
-
Pacers join beginning at Twin Lakes Village inbound, mile 61.8. Same bib, waiver and burro rules as the 2026 course.
leadvilleraceseries.com
- Drop bag rules
-
Same drop-bag mechanics as the 2026 course, but 5 traditional locations: Mayqueen, Outward Bound, Half Pipe, Twin Lakes, Winfield.
leadvilleraceseries.com
- Cutoff philosophy
-
Same as the 2026/offered course: 25-hour big buckle, 30-hour small buckle/official finish, gun-time cutoffs vs. chip-time buckle eligibility.
leadvilleraceseries.com
Aid stations
Every stop, and what you get there
● yes ○ no ? nobody has checked – does not apply to this race
| Mile |
Station |
Cutoff |
Crew access |
Bag |
Pacer |
Med |
To next |
| 0.00 |
Start / Finish (6th St & Harrison)
|
? |
? |
? |
? |
? |
12.40 |
| 12.40 |
Mayqueen
|
7:45am |
● |
● |
? |
? |
10.90 |
| 23.30 |
Outward Bound
|
10:00am |
● |
● |
? |
? |
5.90 |
| 29.20 |
Half Pipe
|
11:30am |
○ |
● |
? |
? |
8.70 |
| 37.90 |
Twin Lakes Village
|
1:30pm |
● |
● |
? |
? |
5.20 |
| 43.10 |
Hope Pass (outbound)
12,526 ft
|
4:00pm |
○ |
○ |
? |
? |
6.70 |
| 49.80 |
Winfield
|
6:00pm |
○ |
● |
? |
? |
6.90 |
| 56.70 |
Hope Pass (inbound)
12,526 ft
|
? |
○ |
○ |
? |
? |
5.10 |
| 61.80 |
Twin Lakes Village (inbound)
|
10:15pm |
● |
● |
● |
? |
8.50 |
| 70.30 |
Half Pipe (inbound)
|
1:15am |
○ |
● |
? |
? |
5.90 |
| 76.20 |
Outward Bound (inbound)
|
3:00am |
● |
● |
? |
? |
11.00 |
| 87.20 |
Mayqueen (inbound)
|
6:30am |
● |
● |
? |
? |
12.50 |
| 99.70 |
Finish (6th St & Harrison)
|
10:00am |
? |
? |
? |
? |
? |
Same race, other lines
Other distances and other years
What it looks like out there
Somebody has been out there with a camera
the tables say the climb is long. these say what long feels like.
31 people have been out there with a camera or a microphone.
+ 23 more.
These are other people's work and we link straight to them. Watching costs nothing and needs no account.
More of them: every race we hold, on film.
Add to this page
What you know
every one of these is read by a person before it changes anything
Ran this race? Tell the next runner what you know.
Nobody sees it until we have read it. No account, no sign-in.
See something wrong or out of date? Suggest an edit.
This changes nothing on the page on its own. Somebody checks it against the race first.
Seen a course preview or a film of this one? Send it over.
Somebody watches it before it goes anywhere near this page. What we are after is footage of this course, on the ground. If it would be just as true of any other race, it is not this.
Have the GPX? Send us the link.
We want the address of the file the race publishes, not the file. We download it from there so the page can say where the line came from.
Are you the race director? Get in touch and we'll make it right.
We read every one of these and we write back. Every fact here carries the source it came from, and the way a wrong one gets fixed is a person checking it against what you tell us.
Where this came from.
Every fact on this page records its source and when we last checked it: 164 sources for this race. Hover a source link to read the sentence it came from.
44% of what we track for a course is filled in. The rest says "not checked yet" rather than guessing.
Ultras change. We will tell you when this one does.
Cutoffs move, races get postponed, lotteries open and close. We read the race's own sources and record where every fact came from. Put your email in and we will send you what changed, and where we read it.
No account, and nothing to cancel.
What happens to your email. Nothing else. I do not sell it, and I will not send you anything except this race changing. One click gets you out.
I keep this catalog because the information is scattered and hard to trust. Telling you when it moves is the same job.
