| Powell to Oerlinghausen | 4,174.36 mi (6,717.98 km) |
| Powell to Oestrich-Winkel | 4,214.51 mi (6,782.61 km) |
| Powell to Offenburg | 4,264.02 mi (6,862.27 km) |
| Powell to Oftersheim | 4,258.65 mi (6,853.64 km) |
| Powell to Ohrdruf | 4,290.60 mi (6,905.05 km) |
| Powell to Ohringen | 4,300.26 mi (6,920.60 km) |
| Powell to Olbernhau | 4,393.62 mi (7,070.84 km) |
| Powell to Olching | 4,406.89 mi (7,092.20 km) |
| Powell to Oldenburg | 4,119.24 mi (6,629.28 km) |
| Powell to Oldenburg in Holstein | 4,177.59 mi (6,723.17 km) |
| Powell to Olfen | 4,134.26 mi (6,653.44 km) |
| Powell to Olpe | 4,174.23 mi (6,717.77 km) |
| Powell to Olsberg | 4,187.90 mi (6,739.77 km) |
| Powell to Oranienburg | 4,314.64 mi (6,943.74 km) |
| Powell to Ortenberg | 4,243.16 mi (6,828.71 km) |
