Sean O'Brien 100K
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About the race
The Sean O'Brien Trail Runs are part of a trail series in the Santa Monica Mountains. The event is held at Malibu Creek State Park in Calabasas, CA on January 30, 2027. Courses are on singletrack and fire road and are described as well marked.
There are five course options with published distances, total ascent, and high points:
- 30K - 19.4 miles; 3,894 ft gain; high point 2,217 ft.
- Marathon - 27.2 miles; 5,692 ft gain; high point 2,257 ft.
- 50K - 32.1 miles; 6,719 ft gain; high point 2,273 ft.
- 50 Mile - 49 miles; 11,492 ft gain; high point 2,404 ft.
- 100K - 61.7 miles; 13,179 ft gain; high point 2,408 ft.
An interactive course map and elevation profile are available via HelloDrifter. The event materials note that all courses lie within Malibu Creek State Park and use a mix of singletrack and fire road surfaces. Information published for each course includes route maps and elevation gain. Visit the organization's website for the most recent information.
