Wasatch 100 Course
Wasatch, UT
Elevation Profile
Current Conditions
Bottom Line
Wind Advisory through 9 PM Thursday with gusts to 40 mph — exposed ridges will be brutal. Saturday's storm brings thunderstorms and a 22-degree temperature drop, so time your run to finish before afternoon cells develop.
53°/35°F · Sunny · 1 alert(s)
No Rating (0/5)
48" depth
Normal flows · 5 gauges
No active fires within 50 miles
11h 46m daylight · Sunrise 7:44 AM · Sunset 7:30 PM
Full Briefing
Wind is the primary concern Thursday with sustained speeds 12-24 mph and gusts to 40 mph under the active Wind Advisory through 9 PM. The Wasatch ridgelines above 8,000 feet will be punishing — plan lower elevation segments or protected canyon routes if running Thursday. Temperatures are mild at 53°F/35°F with sunny skies, so hydration needs are moderate despite the wind.
Saturday's weather pattern shifts dramatically with a 49% chance of rain and thunderstorms developing, plus temperatures dropping from 48°F to 26°F overnight. The storm timing is classic afternoon/evening development — if you're planning a long effort Saturday, start early and aim to be off exposed terrain by 2 PM. The combination of wet conditions and rapid cooling creates hypothermia risk if you're caught out.
Snowpack is substantial with 48 inches at higher elevations, but avalanche conditions aren't rated since this zone transitions out of avalanche-prone terrain by mid-March. Stream crossings are running at 75% of normal flows — all five gauges show stable or falling levels, so no ford issues expected.
With 11 hours 46 minutes of daylight, you need to maintain 2.5+ mph for a 30-mile effort to finish in daylight. Start no later than 8 AM Saturday if weather forces an early finish, or plan a Thursday/Friday window when conditions are more stable.
Waypoints
East Layton Start
Northern terminus. Race starts here at 5 AM.
5,000 ft
Big Mountain Pass
Major aid station at Big Mountain. About 30 miles in.
8,701 ft
Brighton Ski Resort
Midpoint of the course. Drop bag access.
8,799 ft
Soldier Hollow Finish
Finish line at Soldier Hollow near Midway. 36-hour cutoff.
5,600 ft
Route Details
Distance
100.0 mi
Elevation Gain
26,001 ft
Elevation Loss
27,001 ft
Max Elevation
10,200 ft
Estimated Days
1.5
Trailhead
East Layton Park
Best Season
Race held in September. Course runnable July through October.
About This Route
The Wasatch Front 100 is one of the original mountain ultra-races, traversing the Wasatch Range above Salt Lake City over 100 miles with over 26,000 feet of climbing. The course follows ridgelines, canyons, and ski resort trails through some of Utah's most rugged terrain. Starting in East Layton, the course heads south along the Wasatch crest, passing through Big Mountain, Lambs Canyon, Millcreek Canyon, and Brighton before finishing at Soldier Hollow near Midway. The terrain is relentlessly technical with rocky singletrack, steep climbs, and quad-destroying descents. This is one of the hardest 100-mile races in the US, with a roughly 50% finish rate. Runners have 36 hours to complete the course. The route is typically run as a supported race in September, but can be attempted as a fastpack at other times. Much of the route follows the Great Wasatch Trail.
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