| Holladay to Oerlinghausen | 5,111.12 mi (8,225.55 km) |
| Holladay to Oestrich-Winkel | 5,190.95 mi (8,354.03 km) |
| Holladay to Offenburg | 5,266.64 mi (8,475.83 km) |
| Holladay to Oftersheim | 5,240.64 mi (8,434.00 km) |
| Holladay to Ohrdruf | 5,229.19 mi (8,415.56 km) |
| Holladay to Ohringen | 5,277.05 mi (8,492.60 km) |
| Holladay to Olbernhau | 5,311.39 mi (8,547.86 km) |
| Holladay to Olching | 5,383.59 mi (8,664.06 km) |
| Holladay to Oldenburg | 5,038.75 mi (8,109.08 km) |
| Holladay to Oldenburg in Holstein | 5,053.86 mi (8,133.40 km) |
| Holladay to Olfen | 5,086.16 mi (8,185.38 km) |
| Holladay to Olpe | 5,134.63 mi (8,263.39 km) |
| Holladay to Olsberg | 5,137.01 mi (8,267.22 km) |
| Holladay to Oranienburg | 5,197.86 mi (8,365.14 km) |
| Holladay to Ortenberg | 5,204.47 mi (8,375.79 km) |
