New England Green River Marathon
- Running
- Marathon
Greenfield, Massachusetts, United States
The Great River Challenge, Off-road Triathlon
- Triathlon
- 27 km
- 27 km
- 27 km
- 27 km
- 27 km
- 27 km
- 27 km
- 18 km
- 18 km
- 18 km
- 18 km
- 18 km
- 18 km
- 18 km
- 18 km
99 Millers Falls Rd., Northfield, MA 01360
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About the Event
Event Information
Date: Saturday, October 4, 2025
Location: Northfield Mountain Recreation Center, 99 Millers Falls Rd., Northfield, MA 01360
Race Details
The Great River Challenge offers a unique triathlon experience with canoe/kayak/SUP, trail run, and mountain bike legs. The challenge features a hilly off-road course at the Northfield Mountain Environmental and Recreation Center.
Course Highlights
- Long Course: 16.5 Miles
- Short Course: 11.25 Miles
Registration
For more details and to register, visit the event's official website.
How to get there
Courses
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