Race distances are approximate and may very half a mile depending on actual trail availability on race day.
Courses are subject to change based on safety and trail conditions.
Due to the trail nature of this event, there are limited toilets available on course. Please use the restrooms before your start.

Highlights: 1.6 mile long Taft Tunnel, 18 total tunnel sections, 14 trestles, waterfalls, scenic views, 9 aid stations

The 50K course will start at East Portal and run along the Olympic road through the parking lot for about 1 mile before entering the famous 1.6 mile long Taft Tunnel. Runners will then exit the tunnel at Roland and hit their first aid station and a self service gear check near mile 4. They will continue past Tunnel 21 and will hit a second aid station near Moss Creek. After Tunnel 24, runners will start to cross a series of trestles. After Adair and Tunnel 25, runners will hit another aid station with a vault toilet. Runners will continue on past another aid station at Falcon and then reach the turnaround aid station at Pearson. Runners will turn around at Pearson near mile 16. After turning around, runners pass 3 aid stations before passing the Roland aid station one more time, and will re-enter the 1.6 mile long Taft tunnel as they head back toward the finish.

Highlights: 1.6 mile long Taft Tunnel, 12 total tunnel sections, 6 trestles, waterfalls, scenic views, 6 aid stations

The 25K course will start out at East Portal and enter the famous 1.6 mile long Taft Tunnel. Runners will then exit the tunnel at Roland and hit their first aid station and a self service gear check near mile 2. They will continue past Tunnel 21 and will hit a second aid station near Moss Creek. After Tunnel 24, runners will start to cross a series of trestles. After Adair and Tunnel 25, runners will hit another aid station with a vault toilet. Runners will turn around after Tunnel 26 near mile 7.7. After turning around, runners pass 2 aid stations before passing the Roland aid station one more time, and will re-enter the 1.6 mile long Taft tunnel as they head back toward the finish.

Highlights: 1.6 mile long Taft Tunnel, 6 total tunnel sections, waterfall, scenic views, 4 aid stations

The 15K course will start out at East Portal and enter the famous 1.6 mile long Taft Tunnel. Runners will then exit the tunnel at Roland and hit their first aid station and a self service gear check near mile 2. They will continue past Tunnel 21 and will hit a second aid station near Moss Creek. Runners will turn around after Tunnel 22 near mile 4.6. After turning around, runners pass 1 more aid station before passing the Roland aid station one more time, and will re-enter the 1.6 mile long Taft tunnel as they head back toward the finish. Please be aware that the 15K run completes a total of over 3.2 miles in the Taft Tunnel.

Highlights: 1.6 mile long Taft Tunnel, 2 tunnel sections, waterfall, scenic views, 2 aid stations

The 10K course will start out at East Portal and enter the famous 1.6 mile long Taft Tunnel. Runners will then exit the tunnel at Roland and hit their first aid station and a self service gear check near mile 2. Runners will turn around near mile 3.1. After turning around, runners pass the Roland aid station one more time, and will re-enter the 1.6 mile long Taft tunnel as they head back toward the finish. Please be aware that the 10K run completes a total of over 3.2 miles in the Taft Tunnel.