24
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4
rides
Gravel biking in Callahan State Park offers a diverse landscape for cyclists, spanning over 800 acres with varied terrain. The park features extensive open fields, several ponds including Eagle Pond, and a mix of coniferous and deciduous forests. Trails meander through these wooded areas and wetlands, providing both relatively flat paths and segments with elevation changes. This combination of natural features creates a suitable environment for gravel biking across different skill levels.
Last updated: July 5, 2026
3
riders
8.54km
00:39
50m
50m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
3
riders
26.9km
01:40
120m
120m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

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4
riders
14.8km
01:11
70m
70m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
7
riders
23.1km
01:48
90m
90m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
5
riders
22.6km
01:09
100m
100m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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The Upper Charles Rail Trail is a 13.5-mile rail trail that consists of a packed dirt and cinder path the entire time. This section of the trail passes through the Wenakeening Woods and offers access to their singletrack hiking trail network.
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Lots of trails with old ammunition bunkers (see photos), lakes, and forest. Easy, flat hiking good for any length. Parking is available at multiple locations along the road in the park. Visitor's center is closed at the moment, but restrooms are available there.
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The Assabet is a "working river" and observed from above, it seems to be stapled to the landscape by bridges. Over its 31-mile route, more than 40 bridges span it.
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Former railroad track the Upper Charles Trail is currently over 13 miles long. It eventually plans to connect the communities of Milford, Ashland, Sherborne, Holliston, Framingham and Hopkinton. It will then do more than 24 miles in total when fully completed.
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The rail trail here is nice. It goes by a waterfall and through downtown Milford. The trail eventually extends to Holliston which was not paved and not as nice.
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Kind of bumpy along the old tracks, so make sure that you have a gravel or mountain bike.
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Callahan State Park offers a network of trails suitable for gravel biking. On komoot, you'll find 5 highly-rated routes, with many more options available by linking various paths within the park's extensive system of dirt and gravel roads.
The park features a diverse terrain, including open fields, forests, and wetlands. You'll encounter a mix of relatively flat paths, double track, and dirt/gravel roads, as well as segments with elevation changes, such as climbs to Mount Pisgah or Gibbs Mountain. This variety caters to different skill levels.
Yes, Callahan State Park is rich in natural beauty. You can enjoy scenic views of Eagle Pond and other ponds, meander through diverse forests, and explore open fields. For a notable vista, check out the Red Tail Trail View of Callahan State Park.
Absolutely. The park offers a range of trails, including easy paths with minimal elevation gain. For example, the Gravel loop from Marlborough-Sudbury State Forest is rated as easy and provides a good introduction to gravel biking in the area.
Yes, Callahan State Park is known for being dog-friendly. Many trails are multi-use, and there's even a beach-type area at a pond where dogs can swim, making it a great place to enjoy a ride with your canine companion.
Yes, the park's varied terrain includes many easy and relatively flat paths that are suitable for families. The extensive network of multi-use trails allows for shorter, less challenging rides, perfect for a family outing.
Many of the gravel biking routes in Callahan State Park are designed as loops, allowing you to start and end at the same point. Examples include the Assabet River Dam loop from Maynard and the Green Hill loop from Sudbury.
Callahan State Park offers free parking at various entrances, making it convenient for visitors. You can find an entrance point at Callahan State Park (entrance), among others.
The park is enjoyable year-round, but spring and fall offer particularly pleasant conditions with mild temperatures and beautiful foliage. Summer can be great, especially with shaded routes through the forests, while winter biking is possible depending on snow and ice conditions.
Callahan State Park is located near Framingham and Marlborough, which offer various cafes, pubs, and restaurants where you can refuel after your ride. While there are picnic areas within the park, you'll find more dining options in the nearby towns.
Callahan State Park is an excellent gravel biking destination due to its extensive network of multi-use dirt and gravel trails, diverse landscapes including open fields, forests, and ponds, and varied terrain suitable for all skill levels. Its accessibility and natural beauty provide an engaging experience.
The gravel bike trails in Callahan State Park vary in length. You can find shorter loops, such as the Gravel loop from Marlborough-Sudbury State Forest at 9.2 miles (14.8 km), to longer routes like the Assabet River Dam loop from Maynard, which is 19.8 miles (31.9 km).
Callahan State Park is home to a rich diversity of wildlife. While biking, you might spot white-tailed deer, red foxes, coyotes, and various bird species like herons and hawks. Beavers, otters, and different waterfowl can also be seen around the park's ponds and wetlands.
Gravel bikers often praise Callahan State Park for its varied terrain, which includes a mix of open fields, wooded paths, and scenic pond views. The ability to link different trails for customized rides and the overall natural immersion are frequently highlighted by the komoot community.


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