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Ultras · US · UT

Wasatch Front 100 Mile Endurance Run

2026 Wasatch Front 100 Mile Endurance Run
Scheduled
Registration ran December 1, 2025 through January 4, 2026; the 2026 lottery was held January 31, 2026. As of the runner list page's own "updated 8/5/26" date, 423 entrants were listed. Trail-work deadline is August 15, 2026; mandatory runner check-in is September 10, 2026; the race runs September 11-12, 2026. Race has not yet occurred as of this fill.
Race dateSeptember 11-12, 2026
Duration2 days
Start5:00am
Whenin 20 days
First held1980
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 100M
Climb 24,000 ft
Descent 23,300 ft
High point 10,462 ft
Time limit 36:00:00
Aid stations 16
Started not checked yet
Finished not checked yet
Finish rate not checked yet
The course

Where it goes point to point · 16 aid stations · rust marks a stop your crew can reach

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

Point-to-point from East Mountain Wilderness Park (near Kaysville) to the Soldier Hollow pavilion (Midway) along the crest of the central Wasatch Mountains, crossing Bair Canyon, Francis Peak, Farmington Flats, Big Mountain, Lamb's Canyon, Mill Creek Canyon, Desolation Lake, the Wasatch Crest, Brighton, Catherine and Sunset Passes, American Fork Canyon, Pole Line Pass, Baker Pass and Decker Canyon. Altitude ranges 4,887 to 10,462 ft. Daytime aid stations stock water, electrolyte drink, fruit, a salty item and usually soda; nighttime stations add hot drinks; 'crossover' stations carry all of the above; most stations also add soup, potatoes, sandwiches, sweets, pasta or breakfast items depending on volunteers. Desolation Lake and Rock Springs have no vehicle access and are hike-in stations supplied only with water, electrolyte drink and limited other items. The finish-line aid station serves pancakes, bacon, eggs, coffee, tea, broth, fruit, chocolate milk and (later) grilled cheese, plus at least 3 independent food trucks. The race caps entries at an approximate range of 280-330 starters a year for trail-access reasons; there is no single published fixed field cap.

The race

What this one is

A 100-mile point-to-point trail run across the central Wasatch Mountains, from East Mountain Wilderness Park near Kaysville, Utah to the Soldier Hollow pavilion in Wasatch Mountain State Park, Midway, Utah. Starts 5:00 a.m. the first Friday after Labor Day with a 36-hour limit (finish by 5:00 p.m. Saturday). Approximately 24,000 ft of cumulative gain and 23,300 ft of loss, altitude 4,887 to 10,462 ft. Entries are capped by trail-access limits to an approximate range of 280-330 starters a year (no single published fixed number). One of the five oldest 100-mile trail runs in the country and the mandatory closing race of the Grand Slam of Ultrarunning, which it organizes and awards.

First run in 1980; two of five starters finished that first year. The idea for the Grand Slam of Ultrarunning (Western States, Vermont, Old Dominion and Leadville, run within the same summer, with Wasatch as the mandatory closing race) was proposed by Fred Pilon of Ultrarunning Magazine in 1985 and organized in cooperation with then-Wasatch race director Steve Baugh; the first Grand Slam award was given to Tom Green in 1986. By 2021, 165 of 298 starters finished. The race's official written history (by Dana Miller, a 20-time finisher since 1985) is a multi-year article series published on the site's own History page.

Getting in

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

Lottery
Yes
Lottery opens
Dec. 1, 2025 wasatch100.com
Lottery draw
Jan. 31, 2026 wasatch100.com
Field cap
not checked yet
Registration
UltraSignup wasatch100.com
Qualifying
There is no time-based qualifying race for Wasatch (unlike Western States). Entry is via an annual lottery open to any applicant 18 or older (see edition.lottery_rules for automatic-qualifier and ticket-accumulation detail); every accepted entrant, with no exceptions, must also complete 8 hours of supervised trail work by August 15 of the race year. wasatch100.com
Minimum age
18 wasatch100.com
Transfers
No wasatch100.com
Deferrals
No wasatch100.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 wasatch100.com
Vehicles per runner
1 wasatch100.com
Pacers
Yes, from mile 31.90 wasatch100.com
Muling
Not allowed wasatch100.com
Drop bags
Yes wasatch100.com
Cupless
not checked yet
Course marking
Fully Marked wasatch100.com
Night running
Yes wasatch100.com
Dogs
Not allowed wasatch100.com
Headphones
not checked yet
Crew rules
Crew/family/friends may meet runners ONLY at Big Mountain, Lamb's Canyon, Brighton, and (as a pacer-exchange-only point, no crewing) Top of the Wall (mile ~92); meeting a runner anywhere else is a disqualifying infraction. One crew vehicle per runner at Big Mountain and Lamb's Canyon, each requiring a timed parking pass obtained at the George Washington Park staging area (released for Big Mountain 1 hour before predicted runner arrival; released for Lamb's as soon as the runner leaves the Alexander aid station); Brighton has ample parking and is not subject to the same one-vehicle/pass system. Crew vehicles must vacate Big Mountain and Lamb's Canyon as soon as their runner departs (not required at Brighton). No dogs or other pets at any venue including pre-race check-in, start, aid stations and finish (Salt Lake City watershed rules). Car pacing (following alongside a runner in a vehicle) is forbidden. wasatch100.com
Pacer rules
One pacer at a time, joining no earlier than the Big Mountain aid station (mile 31.9), except runners age 60 and over who may have a pacer from the start. Pacers must be 18 or older, with one exception: from the Top of the Wall pacer-exchange point (mile ~92) to the finish, a runner may be joined by anyone of any age, including their own children, with no pacer credentials required. Pacer insertion/exchange points are limited to Big Mountain, Lamb's Canyon, Brighton and Top of the Wall. Pacers may not carry water, food, flashlights, shoes, clothing or other supplies for their runner (muling is forbidden) except to ensure safety if the runner becomes injured or endangered. Car pacing is forbidden. All pacers must travel to the aid station in the runner's own crew vehicle; a pacer with no other crew must still obtain a parking pass if parking a vehicle at Big Mountain or Lamb's Canyon. The Decker Canyon aid station (mile 94.8) is only able to provide aid to a single pacer and the runner at once. wasatch100.com
Drop bag rules
Drop bags are transported to seven of the fourteen intermediate aid stations plus the finish (Bountiful B, Big Mountain, Lamb's Canyon, Big Water, Brighton, Pole Line Pass, Little Deer Creek, and the finish). Bags must be securely tied, clearly marked with runner name and number, and must fit a 10"x10"x20" box; hard-sided containers are not accepted. Bags are left at the Thursday pre-race check-in (Sugarhouse Park, noon-4:00pm) in front of signs for each drop-bag station. As stations close during the race their leftover drop bags are transported to the finish; all bags are at the finish by race end, 5:00pm Saturday. A start-line drop bag is also transported to the finish if left with race officials at the start. wasatch100.com
Cutoff philosophy
Wasatch publishes both a 'Last Arrival To Ever Finish' time (the latest any runner has ever arrived at a given aid station and still gone on to finish) and the actual 'Mandatory In-Time Cut-Off' at the same eight checkpoints, framing the gap between them explicitly as a grace window: 'Runners arriving in the interval ... may continue. Although no runner who arrived within this interval ever finished, they can certainly be allowed to try. ... Maybe they will be the one in a thousand who can do it!' Runners arriving at or after the mandatory cutoff are automatically pulled, which the race explains is 'unkind to both the runner and to later aid station volunteers' rather than as a punishment. The overall race cutoff is 36 hours (finish by 5:00 p.m. Saturday, from a 5:00 a.m. Friday start). wasatch100.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
4,887 ft
? ? ? ? 16.60
16.60 Bountiful B
8,165 ft
12:00pm · · ? 4.30
20.90 Sessions Lift Off
8,320 ft
? · · · ? 11.00
31.90 Big Mountain
7,438 ft
5:00pm ? 8.80
40.70 Alexander
5,555 ft
8:30pm · · · ? 6.80
47.50 Lambs Canyon
6,122 ft
11:00pm ? 8.90
56.40 Big Water
7,624 ft
2:30am · · ? 4.90
61.30 Desolation Lake
9,244 ft
? · · · ? 4.00
65.30 Scotts Peak
9,880 ft
? · · · ? 4.00
69.30 Brighton
8,787 ft
7:30am ? 4.80
74.10 Ant Knolls
8,926 ft
? · · · ? 3.10
77.20 Pole Line Pass
8,936 ft
10:45am · · ? 4.00
81.20 Rock Springs
9,459 ft
? · · · ? 7.10
88.30 Little Deer Creek
7,151 ft
2:30pm · · ? 6.50
94.80 Decker Canyon
5,704 ft
? · · · ? 5.20
100.00 Finish
5,541 ft
5:00pm · ? ?
Driving your crew

Getting your people there 4 stops with directions the race published.

Big Mountain mile 31.90 15 min drive from the stop before cutoff 5:00pm

From the start line or Salt Lake City: I-80 east up Parleys Canyon (~5 miles), Exit 134 (East Canyon) by Mountain Dell Golf Course, left under the freeway, right on the frontage road, follow up past Mountain Dell Golf Course to the top and turn left into Washington Park (George Washington Park). Obtain a parking pass at the interim parking/information point before proceeding. From Washington Park to Big Mountain: head back down past Mountain Dell Golf Course and turn right on East Canyon Road, following the switchbacks up to the aid station.

wasatch100.com
Lambs Canyon mile 47.50 5 min drive from the stop before cutoff 11:00pm

From Washington Park: head back down past Mountain Dell Golf Course, turn left, go under I-80, get on the freeway eastbound, take the very next exit (Lamb's Canyon), go left under the freeway to the aid station.

wasatch100.com
Brighton mile 69.30 cutoff 7:30am

From Lamb's Canyon: back down I-80 west toward Salt Lake City, take I-215 South at the mouth of Parleys Canyon, Exit 6 (Cottonwood Canyons), left onto Wasatch Blvd south, left at Fort Union Blvd/7000 South (Big Cottonwood Canyon), drive about 15 miles to Brighton Lodge. From Salt Lake City directly: I-15 South to I-80 East to I-215 South to Exit 6 as above.

wasatch100.com
Finish mile 100.00 cutoff 5:00pm

From Salt Lake City: I-80 East up Parley's Canyon toward Park City, Exit 146 (Heber/Vernal) to US-40 toward Heber, past Jordanelle State Park, into Heber City; right (west) on 100 South/State Road 113 into Midway to Center Street, left (south) on Center/113 to Tate Lane (before the railroad tracks), right (west) on Tate Lane to Stringtown Road, left (south) on Stringtown past the Tate Barn, staying right at intersections to the finish line pavilion at Wasatch State Park.

wasatch100.com
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