Big River Adventure
Mendocino, CA
Sat, May 22, 2027
In 249 days · Sat, May 22, 2027
Don't let race day sneak up
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Saturday, May 22nd, 2027
Big River State Park, Mendocino CA
See race page
49–60°F · low rain risk
See last 10 years
On this date: rain 0 of the last 10 years
2026
49–60°F
dry
2025
48–57°F
dry
2024
49–57°F
dry
2023
52–64°F
dry
2022
47–64°F
dry
2021
43–62°F
dry
2020
49–59°F
dry
2019
49–61°F
dry
2018
51–61°F
dry
2017
51–66°F
dry
Best months to race in California →
About this race
Big River Adventure Overview
Welcome to the 26th annual Big River Adventure!
Join us for a unique race experience where you can choose your adventure to run, swim, walk, or paddle your way through the scenic beauty of Mendocino County's Big River.
For the past 26 years, Cancer Resource Centers of Mendocino County has been bringing our community together for this special fundraising event. While the activities may change from year to year, our mission remains steadfast: to honor and remember those impacted by cancer, and to raise vital funds to support free services for individuals facing cancer in Mendocino County.
Starting at the Big River boat launch, participants will embark on a journey filled with stunning views and the shared goal of making a difference in the lives of others.
Don't miss out on this unforgettable adventure! Register now and be part of something truly meaningful.
Event Details
- Date: 2027-05-22
- Location: Big River State Park, Mendocino, CA
- Registration: Register here
- T-Shirts: To keep this family-friendly event affordable and accessible to our community, we will not be providing t-shirts this year.
Race Activities
- 5k Runners: Will run east on the haul road to the 5k turn around.
- 10k Runners: Dash east on the haul road to the 10K turn around (10K map).
- 5k "Fun" Walkers: Will follow the 5k runners’ route.
- Kiddie Run: Will begin at the boat launch.
- Swimmers: Will dive in at the boat launch and swim east up Big River.
- Paddlers: Will begin at the boat launch and paddle east up Big River. Please note you must bring your own vessel.
Age Divisions
There are multiple race age divisions. Note: Participants between the ages of 6 and 17 may enter any race division at a discounted rate of $20 at signup.
Contact Information
- Phone: (707) 937-3833
- Email: [email protected]
Course map
Hotels for race weekend
Live prices near the start line, May 21 – 23, 2027.
Train with a club
Run clubs near Mendocino to train with before race day.
See all run clubs near Mendocino →Suggested Races
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