
From the Organizer
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!
Distances & Pricing
Race Location
About This Sport
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.
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.
Coming Up
Frequently Asked Questions (FAQs)
CRM Invitational: Volunteer Registration
Sep 13, 2026