Upper Charles River Reservation loop via Flowed Meadow Conservation Area

This jogging loop offers a diverse terrain. You'll find beautifully paved paths along the Upper Charles River Reservation, particularly the "River Walk" section. However, once you enter the Flowed Meadow Conservation Area, the terrain becomes more natural and challenging. Expect unimproved "Natural Trails" with potentially steep sections, uneven surfaces, rocky or rooty footbeds, and elevated plank "bog bridges." There are also some "Generally Accessible Trails" within Flowed Meadow that are flatter and have a firm, level footbed.

No, this 15.1 km (9.4 miles) loop is rated as a "difficult" or "hard run" by komoot, requiring "very good fitness." While parts of the Charles River path are paved and easier, the sections through the Flowed Meadow Conservation Area feature challenging natural trails with uneven surfaces and potential obstacles, making it less suitable for beginner joggers.

While specific parking lots for this exact loop aren't detailed, access points for the Upper Charles River Reservation and Flowed Meadow Conservation Area are available in Waltham. It's advisable to check local municipal websites like newtonma.gov or mass.gov for the most current parking information and regulations for the reservation areas.

Generally, trails within the Charles River Reservation and conservation areas are dog-friendly, but dogs are typically required to be on a leash. Always check for specific signage at trailheads or on local park websites for any area-specific rules or restrictions regarding pets.

No, there are typically no permits or entrance fees required to access the Upper Charles River Reservation or the Flowed Meadow Conservation Area. These are public green spaces managed for recreational use.

The loop offers beauty year-round, but autumn is particularly stunning along the "River Walk" section of the Upper Charles River Reservation due to breathtaking displays of fall foliage. Spring and early summer are also excellent for enjoying the diverse flora and fauna in the Flowed Meadow Conservation Area. Winter jogging is possible, with opportunities to spot bald eagles, but be prepared for potentially icy or snowy conditions on the natural trails.

The diverse habitats along this route make it excellent for wildlife viewing. In the broader Auburndale area, part of the "Lakes District" of the Charles River, you might spot black-crowned night herons, muskrats, and snapping turtles. The wetlands within Flowed Meadow Conservation Area provide habitat for various birds, and the varied upland terrain is home to many land animals. Bald eagles are also known to be present in winter.

Key highlights include the tranquil wetlands and wooded trails of the Flowed Meadow Conservation Area, which features a glacial kettle hole and an inland marsh. You'll also enjoy picturesque views of the Charles River along the Upper Charles River Reservation, including vistas of the city and historic buildings. The route also passes by Roberts Bay.

Yes, this loop incorporates sections of several other official trails. You'll jog along parts of the Charles River Path, Marty Sender Greenway, and various segments of the Riverwalk and Charles River Greenway. It also includes smaller paths like Swamp Trail and Fenton Path.

While the trail itself is primarily natural, facilities like restrooms or water fountains are generally limited directly on the unpaved sections. Along the more developed paved paths of the Upper Charles River Reservation, you might find amenities in nearby parks or public areas. It's always best to carry your own water, especially given the length and difficulty of this loop.

Given the diverse terrain, wear appropriate trail running shoes with good grip, especially for the natural, uneven sections in Flowed Meadow Conservation Area. Dress in layers suitable for the weather, and bring plenty of water, as facilities are scarce. A map or GPS device is also recommended to navigate the varied trail sections.