The Great River Challenge, Off-road Triathlon Logo

The Great River Challenge, Off-road Triathlon

Northfield, MA

Sat, Oct 3, 2026

In 68 days · Sat, Oct 3, 2026

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When

Saturday, October 3rd, 2026

Where

Northfield Mountain Recreation Center, 99 Millers Falls Rd., Northfield, MA, Northfield MA

Distances

About this race

Race Location

  • Venue: Northfield Mountain Recreation Center
  • Address: 99 Millers Falls Rd., Northfield, MA 01360

Event Overview

  • Type: Off-road triathlon (paddle, run, bike)
  • Safety: Safety measures on land and water, with water stations throughout the course
  • Timing: Accurate segment and transition times by Fast Track Timing using timing chips

Long Course Details

  • Paddle Distance: 5.5 miles on the Connecticut River
  • Running Distance: 4 miles of single track trails
  • Bike Distance: 7.5 miles on single track trails

Short Course Details

  • Paddle Distance: 4 miles on the Connecticut River
  • Running Distance: 2.5 miles of single track trails
  • Bike Distance: 3.75 miles on single track trails

Kayak/Canoe/SUP Leg

  • Course: 5.5 mile race on the Connecticut River
  • Start: Group mass start at waterfront Pavilion
  • Navigation: Wide river with buoy markers for upstream/downstream
  • Assistance: Volunteers available at the dock to help with boats

Transitions

1st Transition

  • Procedure: Bring your boat up the ramp; volunteers will shuttle your boat
  • Next Step: Run to the transition zone across the timing pad
  • Relay Teams: Special corral available for team continuity

2nd Transition

  • Access: Cross over mat to find your bike or teammate
  • Exit: Run your bike across exit mat to the Mountain Bike Course

Run Leg

  • Distance: 4 miles (700ft of climbing)
  • Path: Mixed road and trails leading to the Northfield Mountain Recreational Center
  • Terrain: Packed gravel trails and single-track hiking trails
  • Difficulty: Significant climbs with predominantly downhill finish

Bike Leg

  • Distance: 7.5 miles (850ft of climbing)
  • Trails: Single track with a mix of woods and climbs
  • Topography: Includes a fast descent into the grass to the finish line
  • Short Course: 3.75 miles (430ft of climbing)

Registration Note

  • Deadline: Register before September for correct shirt size

For more information, visit the race page: The Great River Challenge Off-road Triathlon.

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