| Santarem to Oerlinghausen | 1,209.51 mi (1,946.52 km) |
| Santarem to Oestrich-Winkel | 1,103.03 mi (1,775.15 km) |
| Santarem to Offenburg | 1,041.52 mi (1,676.17 km) |
| Santarem to Oftersheim | 1,099.91 mi (1,770.13 km) |
| Santarem to Ohrdruf | 1,234.59 mi (1,986.89 km) |
| Santarem to Ohringen | 1,128.71 mi (1,816.49 km) |
| Santarem to Olbernhau | 1,326.95 mi (2,135.52 km) |
| Santarem to Olching | 1,170.08 mi (1,883.06 km) |
| Santarem to Oldenburg | 1,249.38 mi (2,010.69 km) |
| Santarem to Oldenburg in Holstein | 1,383.89 mi (2,227.15 km) |
| Santarem to Olfen | 1,156.78 mi (1,861.65 km) |
| Santarem to Olpe | 1,140.10 mi (1,834.81 km) |
| Santarem to Olsberg | 1,176.47 mi (1,893.34 km) |
| Santarem to Oranienburg | 1,396.91 mi (2,248.11 km) |
| Santarem to Ortenberg | 1,155.32 mi (1,859.31 km) |
