Big River Adventure
Big River Adventure is a running, paddle, and swimming race on May 22, 2027 in Mendocino, CA, with entry fees from $10 to $35.
- Date
- May 22, 2027 (298 days to go)
- Price
- $10–$35
- Sports
- RunningPaddleSwimming
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
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
61°
Typical Low
46°
Chance of Rain
21%
Based on US Climate Normals data from Ft Bragg 5 N, 13 mi from the venue.
Host City
About Mendocino, CA
City Elevation
449 ft
Nearest Airport
STS
Charles M. Schulz Sonoma County Airport · 76 mi
Major Hub
SMF
Sacramento International Airport · 125 mi
Time Zone
Pacific Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Approximate location — pin shows the host city, not the exact venue.
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Big River Adventure, put it on the calendar, and turn “someday” into a start date.
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From Endurance Grid
About These Sports
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Running
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Paddle Sports
Kayak, canoe, SUP, and outrigger races on rivers, lakes, and ocean. Sprints to marathon distances, split by craft.
Open Water Swimming
Open water races take place in lakes, rivers, bays, and oceans. Distances can run anywhere from a short 500m swim to 10K marathon events. Just you and the water.
Coming Up
More Running races near Mendocino, CA
Noyo Headlands Race
5K · 10K · Half Marathon · From $10 · Noyo Headlands Park - Main & Cypress Streets
8 miles away
Barra of Mendocino Harvest Celebration Run 5k
5K · From $25 · Barra of Mendocino Winery & Event Center
30 miles away
2026 Humboldt Redwoods Marathon, Half Marathon, 5K
5K · Half Marathon · Marathon · From $50 · Weott
70 miles away
Fort Bragg Whale Run and Walk
5K · 10K · Half Marathon · From $10 · Fort Bragg Coast Trail -- South Entrance Noyo Headlands Park
8 miles away
Plan your trip
Make it a Racecation
Coming from out of town? There's more to Mendocino than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to MendocinoFrequently Asked Questions (FAQs)
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Big River Adventure
May 22, 2027