4.4
(13)
86
riders
6
rides
Gravel biking around Millstone features a landscape shaped by historical granite quarrying, now characterized by regenerating forests and remnants of the granite industry. The area includes former quarry sites, some now water-filled, and grout piles that offer elevated viewpoints. The trail network also incorporates sections along the Delaware and Raritan Canal. This combination provides varied terrain for gravel cyclists.
Last updated: July 9, 2026
3.6
(5)
30
riders
45.4km
02:12
50m
50m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.3
(3)
23
riders
36.7km
01:47
30m
30m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.

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4.8
(4)
16
riders
30.9km
01:34
70m
70m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
6
riders
27.7km
01:19
50m
50m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
11
riders
26.9km
01:17
30m
30m
Easy gravel ride. Great for any fitness level. Mostly paved surfaces. Suitable for all skill levels.
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This is such a great path and excellent maintenance. A place just not to bike and enjoy nature but to connect people and places.
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Wear goggles or glasses and keep your mouth closed. Lot of bugs
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Washington Road crosses over Stony Brook here, and it's a great place to stop and enjoy the view. The wide shoulder and sidewalk along the side of the bridge allow you to stop safely without worrying about oncoming traffic.
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Built in 1834, the Kingston Lock was initially constructed to enable safe and efficient freight transport between Philadelphia and New York. These days it is a historic landmark along the D&R Canal Towpath.
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Delaware Raritan Canal trail is in a great condition and a beauty all year around with several historic marks.
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This historic district has so many stories to tell, starting with the Lenni Lenape Indians that originally occupied this area. Many of their artifacts have been found in this area, along with signs of early European settlers and 18th-century agriculture.
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Built in 1907 at the meeting point of Stony Brook and Millstone River, the Lake Carnegie dam created the lake enjoyed by rowers and the community. After a century of upkeep, repairs were needed again in 2015. This is a great place to watch races.
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Gravel biking around Millstone offers a unique blend of historical granite quarry landscapes and natural beauty. You'll find trails weaving through regenerating forests, past abandoned granite quarries (some water-filled), and alongside grout piles offering scenic vistas. Many routes also incorporate sections along the Delaware and Raritan Canal, providing varied terrain of packed earth, dirt, gravel, and crushed stone.
Yes, Millstone offers trails suitable for various skill levels, including easy and moderate options that can be enjoyed by families. The extensive network allows for diverse routes, and the combination of natural terrain and historical features makes for an engaging experience. For example, the View of the D&R Canal loop from Hillsborough Township is rated as easy and provides a pleasant ride.
The Millstone Trails Association manages the network, and while the region is generally outdoor-friendly, specific regulations for dogs on gravel bike trails can vary. It's always best to check local signage or the Millstone Trails Association's official website for the most current rules regarding pets on trails to ensure a pleasant experience for everyone.
Parking availability varies depending on the specific trailhead you choose. Many routes, especially those along the D&R Canal, have designated parking areas. For example, routes starting from Blackwells Mills or Griggstown often have accessible parking. It's recommended to check the individual tour details on Komoot for specific parking information related to your chosen route.
Yes, many of the gravel bike routes around Millstone are designed as loops, allowing you to start and end at the same point. Popular circular routes include the Carnegie Lake Dam – View of the D&R Canal loop from Millstone and the Carnegie Lake Dam loop from Griggstown, both offering scenic rides.
The gravel bike trails in Millstone range from easy to moderate difficulty. You'll find routes like the View of the D&R Canal – Tenmile Run Mountain loop from Blackwells Mills, which is an easy 30.9 km ride. Moderate options, such as the View of the D&R Canal – Bound Brook loop from Blackwells Mills, cover about 36.9 km. The network offers a good variety to suit different fitness levels and time commitments.
The area is highly rated by the Komoot community, with an average score of 4.25 stars from over 10 reviews. Riders often praise the unique combination of historical granite quarry features, the serene beauty of the regenerating forests, and the accessible paths along the D&R Canal. The diverse terrain and scenic views are frequently highlighted as key attractions.
The trails offer a fascinating journey through landscapes shaped by the granite industry. You can expect to see abandoned granite quarries, some now filled with water, and towering grout piles that provide expansive scenic vistas. The area also features artistic granite sculptures and carvings, adding an element of surprise. Additionally, many routes follow the historic Delaware and Raritan Canal Towpath.
Beyond the trails themselves, the region offers several points of interest. You can explore different sections of the Delaware and Raritan Canal Towpath, including specific spots like Delaware & Raritan Canal Towpath – Griggstown. For nature lovers, the Sourland Mountain County Preserve is also nearby, offering additional natural beauty.
The regenerating forests and diverse terrain make Millstone enjoyable across multiple seasons. Spring and fall offer pleasant temperatures and beautiful foliage. While some areas might retain ice and snow into summer, providing naturally air-conditioned trails, it's generally best to check local weather conditions, especially after heavy rain, as trail surfaces can vary. The granite in Millstone provides phenomenal grip when dry.
Yes, Class 1 pedal-assist e-bikes are permitted throughout the Millstone Trails network. This expands accessibility for many gravel bikers, allowing more people to enjoy the unique riding experience the area offers.


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