Saturday, Jun 21, 2025 @ 8:00 AM

Flat Rock Trail Race

510 High Street

Dunstable, MA Flat Rock 6 Hour, Flat Rock 5 Mile

This Event Took Place Sat. Jun 21, 2025

Flat Rock Trail Race

Flat Rock Trail Race is a benefit for the Humane Society for Greater Nashua! The course is a 5-mile loop with nearly 600 feet of elevation gain per lap, set in beautiful Dunstable, MA. You will start the race by going over the Arched Bridge of the Arched Bridge Conservation Area, down part of the old Nashua, Acton and Boston Railroad bed, then run around a former granite quarry and farm, before climbing to the tops of the old Blanchard Hill Ski Area and Flat Rock Hill! You can run, walk, or hike this well-marked loop once for the 5-Mile Race, or for the 6-Hour Race, go as many times as you like within the six hour-limit.

We'd like to thank the Dunstable Conservation Commission as well as the Dunstable Rural Land Trust for their permission to host the race on these trails. Their support, as well as the support of the Town of Dunstable, means a great deal to us. Please join us in being great guests to this special area!

If you'd like to learn more, please visit our website and join our Facebook group.

Race & Course Information

Please see the Flat Rock Trail Race website for additional information. You can find more information about the race, and the course on the site. The website also has information about the historical aspects of the course and volunteer opportunities. Volunteer signups will open in late April.

No Refunds or Deferrals

If for any reason you are not able to attend the race, there are no deferrals and no refunds. Your entry fee will be a donation to the Humane Society for Greater Nashua to help care for their pets looking for homes as well as bringing low cost services to the community. Thank you for supporting the cause!

The race will be held rain or shine.

Event's current local time: 10:35 AM ET

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