This is a GREAT trail for biking. Goes all the way to Pope John Paul Park in Dorchester.

This is a lovely oath path but it’s pretty bumpy, not good for road bikes

Leisurely, very well maintained trail. We rode out of Acton which I think is the best part of the trail and also the newest. It started down-pouring so we didn’t make it the whole way (would have loved to see Heart Pond). Parking in Acton is at a TeamWorks location and there is parking at various parks up the trail as well.

We loved this bike ride with beautiful river views, old mills and even a section that was a raised bridge through lush green wooded area (The bridge was wooden and it felt a bit like you were flying through the jungle). Rode from 7:30 am - 9:00 so was not crowded. Good 15 mile ride!

Starting in the Nashua parking lot (northern terminus) head South. In a few miles, you travel through the town of Pepperell. Another 5 miles, you reach Groton center. The 12 mile trail ends in Ayer. Along the way, you ride parallel to the Nashua River and Pepperell Pond through woods and farms. You may see beaver lots of birds. It’s a pleasant and easy ride you are sure to enjoy.

This trail is great on a hot day, with most portions being shaded; a few open areas get pretty warm, but they are quickly ridden through. 12 miles to Ayer, where a small shady park next to the Town Hall provides a nice spot for a picnic lunch. You can take a slow, steady pace or cruise through at a good clip as you please; just be aware of the other cyclists (some on training wheels), skaters, and walkers. A bit more crowded than usual today (Thursday before the 4th of July), but not awful. One of our favorites!

This is the first trail that I have ridden that is split into two sections. The second section runs along multiple commercial buildings and is adjacent to the Merrimack river. There are many places on the second part to stop and view the river as there are many places to sit. The most interesting thing is that there was a Mulberry tree growing out of the middle of a stone wall (which is 30 feet down to the river) and which had a lot of ripe berries on it within reach. If I can figure out how to post a picture, then I will do so of the tree. Although not adjacent to rails, I would recommend this trail.

This section has been open for a year or two now (June 2020) and is excellent condition all along following the power lines. Approximately 4 miles long end to end with nice smooth black top ideal for cycling, now also attracting walkers, skaters etc. There are footpaths into the adjacent woods.
There is a car park at the Wayland end easily accessible from the intersection of rte 126 and 27. At the eastern end the last access point is at Church Street, Weston. Further east it just dead ends at a decrepit bridge.

We were not very impressed with this trail. The ground is very soft and not great for biking.