| Friern Barnet to Oerlinghausen | 377.72 mi (607.89 km) |
| Friern Barnet to Oestrich-Winkel | 373.01 mi (600.29 km) |
| Friern Barnet to Offenburg | 419.38 mi (674.93 km) |
| Friern Barnet to Oftersheim | 414.03 mi (666.32 km) |
| Friern Barnet to Ohrdruf | 473.97 mi (762.79 km) |
| Friern Barnet to Ohringen | 456.38 mi (734.47 km) |
| Friern Barnet to Olbernhau | 587.66 mi (945.75 km) |
| Friern Barnet to Olching | 561.63 mi (903.85 km) |
| Friern Barnet to Oldenburg | 368.38 mi (592.86 km) |
| Friern Barnet to Oldenburg in Holstein | 495.02 mi (796.66 km) |
| Friern Barnet to Olfen | 323.14 mi (520.05 km) |
| Friern Barnet to Olpe | 347.40 mi (559.09 km) |
| Friern Barnet to Olsberg | 372.07 mi (598.79 km) |
| Friern Barnet to Oranienburg | 572.07 mi (920.66 km) |
| Friern Barnet to Ortenberg | 409.77 mi (659.45 km) |
