Castlewood Adventure Race
St. Louis, MO
Sat, Dec 5, 2026
In 47 days · Sat, Dec 5, 2026
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Saturday, December 5th, 2026
St Louis Area, St. Louis MO
See race page
31–47°F · low rain risk
See last 10 years
On this date: rain 0 of the last 10 years
2025
11–39°F
dry
2024
17–35°F
dry
2023
37–47°F
dry
2022
31–53°F
dry
2021
38–64°F
dry
2020
31–49°F
dry
2019
30–60°F
dry
2018
25–44°F
dry
2017
34–54°F
dry
2016
35–44°F
dry
Best months to race in Missouri →
Race-day forecast says layers
31°F at the start.
Gloves, ear warmers, throwaway layers, hand warmers — delivered before race day.
About this race
Castlewood Adventure Race
Date: 2026-12-05
Location: St Louis Area, St. Louis, MO
For more information, visit the official race page here.
Overview
- Recognition: Named by Terrain Magazine’s Readers as the Best Adventure Race in the area.
- Growth: The Castlewood 8-Hour Adventure Race© has become the third-largest adventure race in the country.
- Experience: It’s all happening right here in St. Louis.
What is Adventure Racing?
- Format: A multi-sport, off-road, team event with no marked course.
- Navigation: Teams must use a map and compass to navigate their way through a series of checkpoints.
- Transport: Participants will use mountain bikes, canoes, and will also travel on foot.
- Goal: The aim is to reach the Finish line efficiently.
Event Details and Schedule
- Race Length: Expect to cover 5-10 miles paddling, 15-20 miles biking, and 5-10 miles on foot.
- FAQ: Please see the Frequently Asked Questions section for more information.
- Course Location: The exact race location is a secret to encourage adventure.
- Planning: A course overview will be available closer to race day to aid in planning gear and food.
Team Configurations
- SOLO: Individual participants.
- 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!
Course map
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Run clubs near St. Louis to train with before race day.
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