Delaware trails · 5K Blackbird Loop
5K Blackbird Loop
A 2.1-mile out-and-back in Delaware, with 48 ft of climbing. Managed by the state.
Length
2.1 mi
Elevation gain
48 ft
Difficulty
Easy
Max grade
5%
Steepest mile
+48 ft
Shape
out-and-back
Bikes
yes
Managed by
State
Elevation profile
Essentially flat — no sustained climb anywhere along its 2.1 miles.
3-D terrain
USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Getting there
1 Mile Office Loop access. 39.39224, -75.63895 · directions
Daylight at the trailhead
On August 31, 2026 — the day this page was generated — first light reaches this trailhead at 6:02 a.m., the sun rises at 6:29 a.m. and sets at 7:35 p.m., and the last usable light fades about 8:02 p.m. (EDT) — 13 h 06 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 4.3-mile round trip takes roughly 1 h 38 min, so leaving the trailhead at sunrise puts you back around 8:07 a.m. — 11 h 28 min before sunset.
Nearby trails
- Red Trail — 3.6 mi
- St Georges Bridge Bike Lane — 10.5 mi
- Michael Castle Trail — 11.1 mi
- Little Jersey — 12.6 mi