3.4
(22)
24
runners
00:50
8.03km
10m
Running
Jog the moderate 5.0-mile (8.0 km) Mercer County Park Blue Trail Loop, featuring lake views and varied terrain.
Last updated: February 26, 2026
Waypoints
Start point
Parking
Get Directions
125 m
Highlight • Rest Area
Tip by
551 m
Highlight (Segment) • Trail
Tip by
8.03 km
End point
Parking
Way Types & Surfaces
Way Types
7.04 km
917 m
Surfaces
4.47 km
680 m
246 m
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Elevation
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Weather
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Today
Friday 8 May
19°C
7°C
12 %
Additional weather tips
Max wind speed: 26.0 km/h
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This route was planned by komoot.
Parking is available within Mercer County Park. You can typically find parking lots near key park facilities like the Mercer County Park boathouse or the Caspersen Rowing Center, which are both along the route. These spots offer convenient access to the trail.
Yes, the Blue Trail Loop is generally dog-friendly. However, it's always best to keep your dog on a leash to ensure the safety and enjoyment of all park users, as the trail is also popular with mountain bikers and other joggers.
No, there are typically no permits or entrance fees required to access Mercer County Park or to jog the Blue Trail Loop. The park is open to the public for recreational use.
The terrain on this loop is quite varied. While some sections might be paved, it's primarily a natural surface trail with packed dirt, roots, and some small rocks. The southern part is generally easier and wider, while the northern section can be harder with more roots, rocks, and potential mud, especially after rain. Be prepared for uneven surfaces.
While the overall elevation change is minimal, the trail is rated moderate due to its varied terrain. The northern section, in particular, features roots, small rocks, and minor elevation changes that require more attention and effort than a purely flat, paved path. It's a good route for those with good fitness looking for a bit of a challenge.
The loop offers scenic views as it skirts the edge of Mercer Lake and passes through wooded areas and open fields. You'll also go by the Mercer County Park boathouse and the Caspersen Rowing Center. The trail itself, known as the Blue Trail, provides a chance to immerse yourself in nature within the park.
The trail can be enjoyed year-round. Spring and fall offer pleasant temperatures and beautiful foliage. Summer can be warm, so an early morning or late afternoon jog is ideal. Winter jogging is possible, but be mindful of potential ice or snow, especially on the natural surfaces.
Yes, the route intersects with several other trails within Mercer County Park. You'll find it overlaps with sections of the Blue (53%), Blue (27%), Paxson's Loop (15%), Conover (15%), Flash Flood (12%), Blue (12%), Blue Trail (10%), and the NJ State Long Trail (9%). This figure-eight design offers flexibility to explore different sections.
While some sections are easy and wide, the varied terrain with roots and small rocks, particularly in the northern part, might be challenging for absolute beginners. Joggers with some experience and good fitness will find it more enjoyable. Beginners might prefer sticking to the southern, generally easier, portions of the loop.
Given the varied terrain, sturdy jogging shoes with good grip are recommended. Bring water, especially on warmer days, as there are no dedicated water stations directly on the trail. Sunscreen and insect repellent can also be useful depending on the season.
The Blue Trail Loop is a multi-use trail, meaning it's also open to mountain bikers. Joggers should remain aware of their surroundings and listen for approaching bikes, especially on narrower sections or blind turns. Similarly, bikers should be mindful of joggers and other users.