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runningRace day in 19 days

Big River Adventure

Date
May 30, 2026
Distance
Kiddie Race · 5K Run · 10K Run & more

From the Organizer

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.

To keep this family-friendly event affordable and accessible to our community, we will not be providing t-shirts this year.

Here is a link to a trail map

•             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 lunch 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.

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.

Race Contact Info

Phone / Teléfono: (707) 937-3833

E-mail / Correo electrónico: info@crcmendocino.org

Distances & Pricing

Kiddie Race8:15 AMRegister →
5K Run8:30 AMRegister →
10K Run8:30 AMRegister →
Big River Swim8:30 AMRegister →
Big River Paddle8:30 AMRegister →
5K Fun Walk8:45 AMRegister →

Race Location

About This Sport

From Endurance Grid's Founder

Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.

With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.

Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.

Running

From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.

Frequently Asked Questions (FAQs)

What is the Big River Adventure?
Big River Adventure is a running event held in Mendocino, CA. Learn more about the different endurance sports here.
When and where is the Big River Adventure?
Saturday, May 30, 2026 in Mendocino, CA at Big River State Park, Mendocino, CA. Check the official event page for exact start times and wave schedules.
How do I register for the Big River Adventure?
Registration is handled through their official registration page. Confirm pricing, distances available, and sign up there.

Big River Adventure

May 30, 2026

Register →