100M

The 2025 Kodiak Ultra Marathons by UTMB® 100M race circumnavigates the entire Big Bear Valley including a few miles on the Pacific Crest Trail and a visit to the summit of Sugarloaf Mountain (9,995′). This is a true mountain 100 miler with a lot of running above 7,000 feet. From the alpine forest with towering pines to the high desert with Joshua trees, you’ll experience several climates and varying vistas from the mountains to Big Bear Lake.

These are the 2025 course maps. There are no major changes planned for 2026, however we can't declare the routes "final" until approved by the US Forest Service.

The GPX file is the most accurate regarding distance and elevation data. There may be minor data differences between this GPX file and the Profile, Map & Time Charts graphics above.

Your recorded distance may vary from our reported distance by as much as +/- one mile due to your device recording interval, the terrain, and dense tree canopy cover.

This is the 2025 gpx file. There are no major changes planned for 2026, however we can't declare the route "final" until approved by the US Forest Service.

The Aid Station Chart is the most accurate regarding distance and elevation data. There may be minor data differences between these Aid Station Charts and the Profile, Map & Time Charts graphics above.

Learn more about each aid station, including elevation gain/loss, cut-off times, and whether drop bags and crew access are available along the course.

These are the 2025 aid station charts. There are no major changes planned for 2026, however we can't declare the routes "final" until approved by the US Forest Service.