| Martos to Oerlinghausen | 1,159.24 mi (1,865.61 km) |
| Martos to Oestrich-Winkel | 1,034.38 mi (1,664.68 km) |
| Martos to Offenburg | 952.76 mi (1,533.32 km) |
| Martos to Oftersheim | 1,018.67 mi (1,639.39 km) |
| Martos to Ohrdruf | 1,157.24 mi (1,862.39 km) |
| Martos to Ohringen | 1,038.76 mi (1,671.73 km) |
| Martos to Olbernhau | 1,233.04 mi (1,984.39 km) |
| Martos to Olching | 1,055.57 mi (1,698.78 km) |
| Martos to Oldenburg | 1,214.77 mi (1,954.99 km) |
| Martos to Oldenburg in Holstein | 1,343.20 mi (2,161.67 km) |
| Martos to Olfen | 1,113.37 mi (1,791.80 km) |
| Martos to Olpe | 1,085.19 mi (1,746.45 km) |
| Martos to Olsberg | 1,120.55 mi (1,803.35 km) |
| Martos to Oranienburg | 1,327.09 mi (2,135.74 km) |
| Martos to Ortenberg | 1,083.35 mi (1,743.48 km) |
