41st Nature Made Great Race: Half Marathon, 5K, 10K, 15K, 10M, 1M
Decision scores
Six 0–100 scores telling you, at a glance, who this race is for.
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About the Race
The Nature Made Great Race is a celebration of running that features the incredibly scenic Chesebro Half Marathon mostly trail race, and on road: the Deena Kastor 5K, Old Agoura 10K, 15K Double Stack Challenge, Cronies 10.3 Mile Triple Stack Challenge and United Track 1 Mile run/walk. Established in 1986, the Great Race has won many awards and accolades over the years including: Best Half Marathon in Nation by Active.com Voted #1 Running Event in L.A. Selected a Top 10K in U.S. by Runner's Wo...
Course Profile
Course profile data unavailable for this race.
Course features
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Vibe & community
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History & past results
Past finisher times and year-over-year participation will appear here once the organizer publishes them.
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Common questions
How hard is the 41st Nature Made Great Race: Half Marathon, 5K, 10K, 15K, 10M, 1M Half Marathon?
We don't have a verified elevation profile yet — check the organizer's course map for the climb breakdown.
What should I wear?
Dress for ~10°F warmer than the standing temperature once you start running. Throwaway long-sleeve at the start, gloves and a hat for sub-50°F mornings, singlet plus visor when it climbs above 60°F. The race-day forecast above is the source of truth closer to the date.
When does it sell out?
No published deadline. Most races raise the entry fee in tiers and can sell out without warning — sign up early if you're committed.
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