By kmartakos in January, 2012
The 5.6 mile length of this trail makes it perfect for a short afternoon ride. Excellent surface of fairly new pavement on the entire trail. Fairly scenic with a few very nice vistas, and rest areas with benches at several points. Just be aware the the trail is downhill all the way from Marlborough to Hudson. I started in Marlborough, and the grade didn't seem that steep as I was heading out. On the the return trip, I realized that even a moderate grade can be pretty demanding when you're climbing it for 5 miles without any level breaks. Maybe next time I'll start in Hudson, and get my work out on the way out, then enjoy the downhill coast on the return trip.
By dpower in October, 2010
The friends-of-the-trails for the Assabet River Rail Trail is http://www.arrtinc.org/
By clundberg in September, 2010
You need to make sure you type your address in the space provided before getting the directions to the trail