The Great River Challenge, Off-road Triathlon
- Date
- Last held Oct 3, 2026, next date to be announced
- Location
- Northfield, Massachusetts
Registration for the next edition has not opened.
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Official race websiteStart location and course
Northfield Mountain Recreation Center, 99 Millers Falls Rd., Northfield, MA, Northfield, MA 01360
The pin marks the address the race lists, which is usually the start. The organizers have not shared a course map with us yet.
2026 results
All results (3 years)Solo Triathlon Male Long Course
Solo Triathlon Male Short Course
3 Person Relay Team Triathlon Long Course
Aggregated from official results (Fast Track Timing LLC) for The Great River Challenge, Off-road Triathlon. Individual finisher names are not stored here.
How fast do you need to be at The Great River Challenge, Off-road Triathlon?
At the 2026 Solo Triathlon Male Long Course, the fastest tenth finished in 2:31:36 or better, the top quarter in 2:46:06, and half the field in 2:53:18; the last tenth came in after 3:39:59.
At the 2026 Solo Triathlon Male Short Course, the fastest tenth finished in 1:53:59 or better, the top quarter in 2:09:14, and half the field in 2:24:54; the last tenth came in after 2:53:28.
At the 2026 3 Person Relay Team Triathlon Long Course, the fastest tenth finished in 2:22:06 or better, the top quarter in 2:34:43, and half the field in 2:41:36; the last tenth came in after 3:04:29.
What would my time get me?
Where a finish time would have placed in 2026.
Run and bike splits at The Great River Challenge, Off-road Triathlon
Compared with a typical half iron triathlon in the US, the median bike here was 1:42:38 faster.
| Leg | Top 10% | Top 25% | Median | Slowest 25% |
|---|---|---|---|---|
| Run 1 | 33:13 | 34:13 | 40:13 | 42:05+ |
| Bike | 58:56 | 1:04:25 | 1:08:48 | 1:19:50+ |
Each column ranks finishers on that leg alone, from the race's published results. T1 and T2 are transitions.
Finishers by year
Down 23 percent since 2023.
All events combined, from official results.
The Great River Challenge, Off-road Triathlon Half Iron Triathlon year by year
From 2023 to 2026, the field went from 26 to 18 finishers, and the median time rose from 2:50:50 to 2:53:18.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2026 | 18 (+38%) | 2:53:18 | under 2:31:36 | 2:10:31 |
| 2025 | 13 (-50%) | 2:58:36 | under 2:27:11 | 1:59:06 |
| 2023 | 26 | 2:50:50 | under 2:17:27 | 1:57:56 |
From each year's official results for the Half Iron Triathlon; virtual options are left out.
Race details
- Where
- Northfield Mountain Recreation Center, 99 Millers Falls Rd., Northfield, MA, Northfield, MA 01360Map
- Course
- Road
- Start elevation
- About 430 feet
- Distances
- Kids Triathlon, Sprint Triathlon, Half Iron Triathlon
- Editions
- 2026 (Oct 3, 2026), 2025 (Oct 4, 2025), 2024 (Oct 5, 2024), 2023 (Oct 7, 2023), 2022 (Oct 8, 2022), 2021 (Oct 9, 2021)
- Status
- The next edition has not been announced yet. Past events: 2 Person Team Triathlon, 3 Person Junior Team Triathlon, 3 Person Team Triathlon, 4 Person Junior Team Triathlon, 4 Person Team Triathlon.
Organize this race? Add details or a correction
Quick answers
- When is The Great River Challenge, Off-road Triathlon?
- The next date has not been announced.
- How much does it cost?
- See the registration page for current pricing.
- What distances are offered?
- Kids Triathlon, Sprint Triathlon, Half Iron Triathlon.
- How big is it, and how fast?
- In 2026, 18 athletes finished the Solo Triathlon Male Long Course; the median finish was 2:53:18 and the winner finished in 2:10:31.
- Where does it start?
- Northfield Mountain Recreation Center, 99 Millers Falls Rd., Northfield, MA, Northfield, MA 01360.
From the organizers
RACE DESCRIPTION
Location: Northfield Mountain Recreation Center, 99 Millers Falls Rd., Northfield, MA 01360
The Great River Challenge is a triathlon event in the non-traditional category, being a paddle, run and bike event. We have safety on land and water as well as water stations throughout the course, making sure your experience is fun, challenging and safe! The timing is run by Fast Track Timing, who use timing chips to ensure accurate segment and transition times, so you can have record of every stage of the race.
Long Course