| Sierra Madre to Oerlinghausen | 5,671.95 mi (9,128.12 km) |
| Sierra Madre to Oestrich-Winkel | 5,753.16 mi (9,258.81 km) |
| Sierra Madre to Offenburg | 5,829.47 mi (9,381.63 km) |
| Sierra Madre to Oftersheim | 5,802.94 mi (9,338.93 km) |
| Sierra Madre to Ohrdruf | 5,789.81 mi (9,317.80 km) |
| Sierra Madre to Ohringen | 5,839.13 mi (9,397.17 km) |
| Sierra Madre to Olbernhau | 5,870.73 mi (9,448.02 km) |
| Sierra Madre to Olching | 5,945.48 mi (9,568.32 km) |
| Sierra Madre to Oldenburg | 5,598.96 mi (9,010.65 km) |
| Sierra Madre to Oldenburg in Holstein | 5,611.60 mi (9,030.99 km) |
| Sierra Madre to Olfen | 5,647.68 mi (9,089.07 km) |
| Sierra Madre to Olpe | 5,696.38 mi (9,167.43 km) |
| Sierra Madre to Olsberg | 5,698.31 mi (9,170.54 km) |
| Sierra Madre to Oranienburg | 5,755.49 mi (9,262.57 km) |
| Sierra Madre to Ortenberg | 5,766.12 mi (9,279.67 km) |
