Home » Races » 40th Nature Made Great Race: Half Marathon, 5K, 10K, 15K, 10M, 1M

40th Nature Made Great Race: Half Marathon, 5K, 10K, 15K, 10M, 1M

April 5, 2025
Agoura Hills
Trail-Road
Distances
Half-Marathon, 10k, 5k
Starting Time

7:00 AM

Fees

$75-$150

Perfect For
Family Friendly, Stroller Friendly
1-100
Some Hills
Mountain Views
High: 65°
/ Low: 50°
Overview

Explore the Most Beautiful Running Routes!

REGISTER TODAY to reserve your space! Limited space.

Awarded LA’s #1 Post Race Party, Best Half Marathon, Best Brunch Run, Best Swag, Top 10K
Run the 40th annual Nature Made Great Race featuring the Chesebro Half Marathon (mostly trail half) and road races: Old Agoura 10K, Deena Kastor 5K, the 10.3 Mile Triple Challenge, 15K Combo and All-Ages 1 Mile.

Chesebro Half Marathon (mostly trail): 
This race will leave you feeling inspired and energized as it takes place through a variety of natural landscapes in a national park. You’ll run past ranches, open meadows, through tree canopy-covered trails and then your way up for stunning views at the summit. Remember, what goes up, must go down: the last 5 miles are mostly downhill! 60% trail, 40% road, 100% wonderful.

10.3 Mile Triple Challenge
Do you think you can handle the challenge of running 3 races in one day? If so, then this deal may just be perfect for you! It includes three different events that take place on Saturday morning. You’ll start off with an initial 10K at 7:28 a.m. and then have until 9:05 a.m. when it’s time to go knock out a 5K. Then a 1 mile run at 10:15 a.m. as your finale. Special Challenge Medal awarded after you complete your third race of the day.

15K Combo
Do you think you can handle the challenge of running two races in one day? If so, then this deal may just be perfect for you! It includes two different events that take place on Saturday morning. Run twice: Run the 10K, then run the 5K. 
Best Half Marathon: The Great Race Chesebro Half Marathon wins Best Half Marathon in the Nation at the Best of Active.com Awards!

Best 10K in U.S.: Runner’s World Magazine lists the Great Race 10K first under Six Top 10Ks in the nation! You won’t want to miss this! The 10K runs along the Santa Monica Mountains National Recreation Area and meanders through some of California’s most scenic roads. It is one for all you road racing enthusiasts, but also perfect if you just love being outdoors in picturesque scenery with your friends on race day or even taking selfies along the way.

Best Post-Race Party!: Active.com, Runner’s World & Los Angeles Sports & Fitness award the Great Race for having the Best Post-Race Party!

Best Race Swag!: Competitor Magazine says the Great Race has the Best Race Swag!

Best Brunch Run!: Athlinks says the Great Race is the choice for a Brunch Run! 
We look forward to seeing you at the Great Race!

Learn more at GreatRace.run

The course starts on Carell Ave. (at least a 10 minute uphill walk from the registration tables in Chumash Park — allow plenty of time to get to the start and remember you get to run down that big hill). On race day, look for the signs directing you to the START. This is a downhill start.

  1. Head south on Carell Ave.
  2. Right on Thousand Oaks Blvd.
  3. Left on Argos St.
  4. Right on Valley Heights Dr.
  5. Left on Rock Tree Dr.
  6. Left on Medea Valley Dr. adjacent to Chumash Park
  7. Right on Parkheath Dr.
  8. Right on Argos St.
  9. Left on Driver Ave. Long straight, flat stretch east out to Chesebro Rd.
  10. Left on Chesebro Rd.
  11. This is new for 2019 and years forward: Veer right and enter the Santa Monica Mountains National Recreation Area off Chesebro Rd at the trail entrance gate.
  12. Water station when you enter trail.
  13. There are two forks on the fire road. See satellite map view for detailed view. Veer left at first fork to run toward Morrison Ranch area. Veer left at second fork prior to Cheeseboro Canyon Trail. Volunteers will be on course to guide you.
  14. Turn right on Cheeseboro Canyon Trail, this is fire road.
  15. Water station at Sulphur Springs Rock at approximately Mile 6. When you pass the big rock at the Sulphur Springs sign the trail changes to single track.
  16. Left on Sheep Corral Trail. Most of the climbing on the route is on the Sheep Corral Trail, peaking right before the Palo Comado Canyon Trail.
  17. Left on Palo Comado Canyon Trail.
  18. Water station where Sheep Corral Trail meets Palo Comado Canyon Trail.
  19. Enjoy the significant, lengthy downhill on Palo Comado Canyon.
  20. Right on Doubletree Connector. This is the steepest ascent on the route.
  21. Left out of trail onto Sunnycrest Dr.
  22. Aid station and restrooms at trail exit.
  23. Quick uphill followed by major downhill on Sunnycrest Dr.
  24. Left on Kanan Rd.
  25. Water station where Kanan Rd. intersects with Idle Dr.
  26. Left on Thousand Oaks Blvd.
  27. Right on Argos St.
  28. Right onto Chumash Park grass and into finish chute.

 

On the trails watch out for mountain bikers, horses, snakes and insects. Whatever you bring in the trail, you must bring out. Please do not throw your trash on the trails. Look for volunteers stationed with trash bags to drop your water bottles or energy gel packs.

40th Nature Made Great Race: Half Marathon, 5K, 10K, 15K, 10M, 1M Course Map

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