| Twin Rivers to Oerlinghausen | 3,841.11 mi (6,181.68 km) |
| Twin Rivers to Oestrich-Winkel | 3,869.25 mi (6,226.96 km) |
| Twin Rivers to Offenburg | 3,910.60 mi (6,293.50 km) |
| Twin Rivers to Oftersheim | 3,911.07 mi (6,294.26 km) |
| Twin Rivers to Ohrdruf | 3,954.66 mi (6,364.40 km) |
| Twin Rivers to Ohringen | 3,953.42 mi (6,362.41 km) |
| Twin Rivers to Olbernhau | 4,061.66 mi (6,536.60 km) |
| Twin Rivers to Olching | 4,058.29 mi (6,531.19 km) |
| Twin Rivers to Oldenburg | 3,792.06 mi (6,102.73 km) |
| Twin Rivers to Oldenburg in Holstein | 3,861.77 mi (6,214.91 km) |
| Twin Rivers to Olfen | 3,797.43 mi (6,111.38 km) |
| Twin Rivers to Olpe | 3,834.23 mi (6,170.60 km) |
| Twin Rivers to Olsberg | 3,850.86 mi (6,197.37 km) |
| Twin Rivers to Oranienburg | 3,994.00 mi (6,427.72 km) |
| Twin Rivers to Ortenberg | 3,901.66 mi (6,279.12 km) |
