| Monticello Conte Otto to Oerlinghausen | 459.40 mi (739.33 km) |
| Monticello Conte Otto to Oestrich-Winkel | 346.43 mi (557.52 km) |
| Monticello Conte Otto to Offenburg | 262.19 mi (421.95 km) |
| Monticello Conte Otto to Oftersheim | 295.70 mi (475.89 km) |
| Monticello Conte Otto to Ohrdruf | 363.34 mi (584.73 km) |
| Monticello Conte Otto to Ohringen | 267.11 mi (429.87 km) |
| Monticello Conte Otto to Olbernhau | 359.23 mi (578.12 km) |
| Monticello Conte Otto to Olching | 180.08 mi (289.81 km) |
| Monticello Conte Otto to Oldenburg | 542.67 mi (873.34 km) |
| Monticello Conte Otto to Oldenburg in Holstein | 601.91 mi (968.68 km) |
| Monticello Conte Otto to Olfen | 463.87 mi (746.52 km) |
| Monticello Conte Otto to Olpe | 411.89 mi (662.88 km) |
| Monticello Conte Otto to Olsberg | 421.80 mi (678.82 km) |
| Monticello Conte Otto to Oranienburg | 499.90 mi (804.50 km) |
| Monticello Conte Otto to Ortenberg | 348.72 mi (561.21 km) |
