Big River Adventure

MAY
30
2026
The Big River Adventure returns for its 26th year in Mendocino County. Choose from running, walking, swimming, or paddling events starting from the scenic river boat launch. The event raises funds for local cancer support services.
Sat 30 May 2026
10 kilometers 5 kilometers

Always double-check with the organizer's website! This page may contain affiliate links.

Event Overview

The Big River Adventure is a multi-sport event scheduled for May 30, 2026, at Big River State Park in Mendocino County, California. This marks the 26th annual edition of the event, organized as a fundraiser by the Cancer Resource Centers of Mendocino County.

Activities and Course

The event offers several participant options, all starting from the Big River boat launch. Participants can choose from running, walking, swimming, or paddling activities. The described routes follow the haul road east along Big River.

  • 5K Run and 10K Run
  • 5K Fun Walk
  • Kiddie Race for children ages 2-5
  • Big River Swim
  • Big River Paddle (participants must provide their own vessel)

Registration and Fees

Registration for most events costs $38.10, including fees. A youth discount is available for participants aged 6-17, reducing the fee to $22.20. The Kiddie Race has a separate fee of $11.60. Event t-shirts are not provided this year.

Purpose

The event's primary purpose is to honor those impacted by cancer and raise funds to support free cancer services in Mendocino County. Visit the organization's website for the most recent information.

10 km
10k Run
5 km
5k Fun Walk
5 km
5k Run
Big River Paddle
Kiddie Race
Big River Swim