MountainOne Steel Rail Marathon
Steel Rail Marathon gives Berkshires runners a rail-trail out-and-back with Adams Visitor Center logistics, steady aid, and fast-path potential.
Quick facts
- Sunday race day puts the marathon first, with the half marathon and 8K after it.
- Marathon starts at 7:00 a.m., followed by the half marathon and 8K.
- Race benefits the Ashuwillticook Rail Trail and DCR.
About the MountainOne Steel Rail Marathon
The MountainOne Steel Rail Races support the Ashuwillticook Rail Trail and DCR, with marathon, half marathon, 8K, and kids race options.
Course
The marathon starts and finishes at the Adams Visitor Center and follows the Ashuwillticook Rail Trail, an out-and-back path race with frequent water stops.
Race-day weather
The Berkshires can bring a cool start and a large temperature swing in mid-May. Shade and trail exposure vary through the morning.
Past MountainOne Steel Rail Marathon dates and results
| Year | Date | Status | Results |
|---|---|---|---|
| 2026 | Sunday, May 17, 2026 | Completed | Open results |
| 2025 | Sunday, May 18, 2025 | Completed | Open results |
| 2024 | Sunday, May 19, 2024 | Completed | Open results |
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MountainOne Steel Rail Marathon FAQ
When is the MountainOne Steel Rail Marathon?
We're waiting for the finalized date for the 2027 MountainOne Steel Rail Marathon. The most recent running was on Sunday, May 17, 2026.
Is MountainOne Steel Rail Marathon a Boston qualifier?
Yes. MountainOne Steel Rail Marathon is a Boston Marathon qualifier. To use the result, you must run the certified full-marathon course within the qualifying window and meet the current standard for your age and gender. Meeting the standard lets you apply but does not guarantee entry, and net-downhill courses can receive a time adjustment under current B.A.A. rules. Review the Boston qualifying times and downhill-course rules, or browse upcoming Boston qualifier marathons.
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