Castlewood Adventure Race

United States flag St. Louis, Missouri, United States

27 days left

Castlewood Adventure Race www.active.com
Date 05 Dec, 2026
Races 4 distances
Entry fee $150.00 – $600.00
Runner rating Be the first to rate
Castlewood Adventure Race

About the event

Named by Terrain Magazine’s Readers as the Best Adventure Race in the area, the Castlewood 8-Hour Adventure Race© has grown to become the third-largest adventure race in the country. And it’s all happening right here in St. Louis.

What is Adventure Racing? A multi-sport, off-road, team event with no marked course. Teams must use a map and compass to navigate their way through a series of checkpoints on mountain bikes, in canoes, and or on foot to reach the Finish line.

 

 

How long is the race? Expect to cover 5-10 miles paddling, 15-20 miles biking, and 5-10 miles on foot. Please see the Frequently Asked Questions section for more information.

Race Location: That’s a secret! Part of the appeal of adventure racing is charging into the unknown on race day. A course overview will be available closer to race time to help you plan your gear and food. Plan on four to eight hours of continuous movement through the woods, rivers, and roads of the St. Louis area. (Even though the event is named after Castlewood State Park, we may not necessarily even go through the park on race day!)

Team Configurations:

  • SOLO
  • 2-Person (Co-Ed, Men’s, and Women’s Divisions)
  • 4-Person (Co-Ed, Men’s, and Women’s Divisions)
  • Family (2+ related people, one over 18 and one under 18, one canoe per team)

Please Note: the cap for previous races was 300 participants and registrations were SOLD OUT before the end of October. Register early to ensure your spot in the race!

Races offered

05Dec

8 HOUR ADVENTURE RACE - 2 PERSON TEAM

Running

Distance
Ultra
Countdown
27 days
Entry fee
$300.00
05Dec

8 HOUR ADVENTURE RACE - 3 PERSON TEAM

Running

Distance
Ultra
Countdown
27 days
Entry fee
$450.00
05Dec

8 HOUR ADVENTURE RACE - 4 PERSON TEAM

Running

Distance
Ultra
Countdown
27 days
Entry fee
$600.00
05Dec

8 HOUR ADVENTURE RACE - SOLO

Running

Distance
Ultra
Countdown
27 days
Entry fee
$150.00

Weather history

3-year monthly averages for December in St. Louis.

Temperature-0.1° / 8.3°
Feels like-4.4° / 4.7°
Sunshine hours5h 47m
Rainfall2.0 mm
Snowfall0.1 cm
Wind11.8 km/h (Light breeze)
Humidity74.4%
Max UV indexLow (2.0)
Sweat lossLow
Course conditionsFirm and slightly soft
Sunrise08:10
Sunset17:41

About St. Louis

Learn more about the host city, St. Louis.

Scenic view of

St. Louis is an independent city in the U.S. state of Missouri. It lies near the confluence of the Mississippi and the Missouri rivers. In 2020, the city proper had a population of 301,578, while its metropolitan area, which extends into Illinois, had an estimated population of over 2.8 million. It is the largest metropolitan area in Missouri and the second-largest in Illinois. The city's metropolitan statistical area is the 23rd-largest in the United States.

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Video

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