Help make the 2024 Marin Ultra Challenge the best ever by volunteering with Inside Trail as an aid station helper, sweep, or course monitor! Complete the volunteer form here and you will receive a free race T-shirt, free food, and the ability to earn credit toward a future Inside Trail Racing event.

SFRC will not be hosting a regular group run March 9th and encourages community members to volunteer with us at Tennessee Valley or along the course with ITR.