2026 Runners Guide Coming Soon
50m COURSE Overview
Start/Finish: Antelope Island Marina
Distance: 50 Miles
High Point: 4,908ft
Low Point: 4,218ft
Total Elevation Gain: 4604ft'
Cut off: 13 hours (7:00 PM)
Course type: 90% single track, 6% gravel roads, and 4% paved roads
Course DescriptioN
The 68-kilometer course consists of a counterclockwise lap of “Flying Dog” and a clockwise lap of the “Great Western-Mormon Pioneer” loops to create a figure eight map.
The race begins with a 1-mile paved section to separate and spread out the field before reaching the trails. Other than a bit of dirt road running, 90% of the course is on single track. But don't worry, you’ll have plenty of opportunities to move freely or pass other runners. Once on the trails, you'll start the aforementioned ‘Flying Dog’ loop in a counterclockwise direction. There’s a short climb at the beginning of this section on the Blackhawk Trail, followed by a downhill to rolling section of the Glenwild Trail before the big climb up to the top of Flying Dog.
Next, there is a long, fast descent through aspen groves and past a beaver dam as you make your way through the woods and down to the 24/7 Trail intersection, where you keep straight on 24/7 for 2.2 miles all the way to the junction at Jeremy Ranch Road.
From the junction, you’ll head west for 1/10th of a mile on the road to the Moose Hollow trailhead and the beginning of your loop on the Great Western-Mormon Pioneer. Here, you’ll be faced with a 3-mile, 1,300+ foot grinding climb across the Moose Hollow, Avenues, and Great Western trails before hitting a scenic ridgeline section with a series of frequent small climbs and descents. It’s all worth it though, especially as you reach Bald Mountain—the high point of the course with panoramic views of the Central Wasatch Range—midway through.
The 7.5-mile ridgeline section culminates at Big Mountain Pass where you will have an aid station to resupply before a flowy 4.5-mile descent down to Jeremy Ranch Road and the aid station at Mormon Flat Campground. From Mormon Flat, it’s a very gradual 4-mile climb on Jeremy Ranch Road back to the junction where you’ll complete that second loop and receive aid again.
From here, there are only 7 miles to the finish line! You’ll start by doubling back on the 24/7 Trail—specifically, a 2.2-mile, 600-foot climb back to the intersection with Flying Dog, where you’ll turn right to continue along 24/7 for 3 miles of rolling terrain before reaching the junction of the Stealth Trail. You’ll stay on the Stealth Trail, descending for approximately 1.8 miles all the way back to the Spring Creek Trailhead on Glenwild Drive—way back when you were starting that first loop on Flying Dog!
Stay right on Glenwild Drive for a brief section of pavement back to the highway. Ducking through the pedestrian tunnel, a wooden bridge and a quarter-mile of pavement takes you to the finish at Newpark Amphitheater.