| Bistrita to Oerlinghausen | 782.23 mi (1,258.88 km) |
| Bistrita to Oestrich-Winkel | 778.20 mi (1,252.39 km) |
| Bistrita to Offenburg | 772.84 mi (1,243.76 km) |
| Bistrita to Oftersheim | 746.84 mi (1,201.92 km) |
| Bistrita to Ohrdruf | 673.19 mi (1,083.39 km) |
| Bistrita to Ohringen | 704.59 mi (1,133.93 km) |
| Bistrita to Olbernhau | 562.12 mi (904.65 km) |
| Bistrita to Olching | 617.06 mi (993.06 km) |
| Bistrita to Oldenburg | 829.47 mi (1,334.91 km) |
| Bistrita to Oldenburg in Holstein | 772.33 mi (1,242.95 km) |
| Bistrita to Olfen | 829.38 mi (1,334.76 km) |
| Bistrita to Olpe | 798.54 mi (1,285.12 km) |
| Bistrita to Olsberg | 777.01 mi (1,250.48 km) |
| Bistrita to Oranienburg | 632.55 mi (1,017.99 km) |
| Bistrita to Ortenberg | 736.48 mi (1,185.25 km) |
