CR Half: Volunteer Registration
About this race
This page is only for signing up to volunteer. Please navigate to the volunteer section to view the various shifts available.
Please find all other race info on our event page: CR Half.
CR Half 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:
A Half Marathon and Team Relay on a fast, flat 2.6 mile loop around the scenic Charles River. Starting and finishing at the Marsh Post, and held on the same course as our popular Boston 5K Summer Series and Charles River Marathon.
Pick your distance
Running
Please click "Volunteer" in navigation above.
The "Sign Up" button below is only for running the race.
Typical race-day weather
Based on 2 years of historical conditions on this event's race dates in Cambridge.
Course
Route map and elevation profile
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
Done this event?
If you've participated in this event, share your experience with other runners
Other races near Cambridge
Different organizers, within 40 miles, in the next three months
Samaritans 5K
The Ryan Shaw Memorial 5k
Boston Purple Pumpkin 5K and Walk
Reach Green Stadium Challenge - September
🏃 Plan Your Next Race in Cambridge
Find upcoming events by distance:
- Cambridge 5K Races 9 races
- Cambridge Half Marathons 2 races
- Cambridge Running Calendar 2026 12 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 12 Cambridge events
Spotted something wrong? Tell us and we'll fix it.