This page is only for signing up to volunteer. Please navigate to the volunteer section to view the various shifts available.

Join us for our pre-race number pickup on Saturday Sep. 12th, or various shifts available on race day, Sunday, Sep. 13th, 2026

Please find all other race info on our event page: CRM Invitational

CRM Invitational is made possible each year thanks to the help of our wonderful volunteers. We greatly appreciate your support! As a volunteer, you'll assist with number pickup, venue setup, registration, bag check, water stops, marshaling, medals/awards, and cleanup.

The Race:

Our 2nd annual Charles River Marathon Invitational (CRMI) is held on the same course as the Charles River Marathons, but geared towards runners who've completed a marathon within 20 minutes of their BQ time since Jan 1, 2024. We will also offer a limited number of time-waived entries for fundraiser runners. This flat, fast, certified course attracts runners from across the United States and overseas to Boston's beautiful Herter Park. Over 73% of our 2025 finishers qualified for the 2026 Boston Marathon!