Apple Maps Google Maps gravel segment My house to Grind Stone City bike gravelmap.com 182.4 km 846 m gain
Apple Maps Google Maps gravel segment Downington Road to Sandoval Drive bike gravelmap.com 147.7 km 724 m gain
Apple Maps Google Maps other segment Polly Ann Trail - Lapeer County (grass) bike gravelmap.com 19.5 km
Apple Maps Google Maps gravel route Septuple Loop: Unavoidable Bonk V.2.0 bike gravelmap.com 115.7 km 1342 m gain
Apple Maps Google Maps gravel segment Imlay City Road to Polly Ann Trail bike gravelmap.com 74.3 km 367 m gain
