| Spout Springs to Oerlinghausen | 4,258.82 mi (6,853.91 km) |
| Spout Springs to Oestrich-Winkel | 4,283.54 mi (6,893.70 km) |
| Spout Springs to Offenburg | 4,322.03 mi (6,955.63 km) |
| Spout Springs to Oftersheim | 4,324.54 mi (6,959.68 km) |
| Spout Springs to Ohrdruf | 4,371.52 mi (7,035.29 km) |
| Spout Springs to Ohringen | 4,367.07 mi (7,028.12 km) |
| Spout Springs to Olbernhau | 4,479.40 mi (7,208.90 km) |
| Spout Springs to Olching | 4,471.19 mi (7,195.68 km) |
| Spout Springs to Oldenburg | 4,211.23 mi (6,777.31 km) |
| Spout Springs to Oldenburg in Holstein | 4,283.01 mi (6,892.84 km) |
| Spout Springs to Olfen | 4,214.28 mi (6,782.23 km) |
| Spout Springs to Olpe | 4,250.15 mi (6,839.96 km) |
| Spout Springs to Olsberg | 4,267.58 mi (6,868.01 km) |
| Spout Springs to Oranienburg | 4,414.27 mi (7,104.09 km) |
| Spout Springs to Ortenberg | 4,317.05 mi (6,947.62 km) |
