Backyard ultramarathons in Maine, United States

Mostly flat 3.5-mile gravel loop on Back Cove Trail, circling a tidal estuary with scenic views and a short paved bridge crossing

Scenic forested loops at Pineland Farms, 4.2-mile double-track trails with moderate elevation changes

50K and 50-mile options on vehicle-free gravel park roads in Cobscook Bay State Park, using a modified Backyard Ultra loop format.

Backyard-style ultra on coastal Maine trails, 4.17-mile loops around Buttermilk Mountain with single and doubletrack through serene woodlands