| Kelsterbach to Oestrich-Winkel | 23.95 mi (38.55 km) |
| Kelsterbach to Offenburg | 113.45 mi (182.58 km) |
| Kelsterbach to Oftersheim | 47.81 mi (76.94 km) |
| Kelsterbach to Ohrdruf | 110.40 mi (177.67 km) |
| Kelsterbach to Ohringen | 73.65 mi (118.53 km) |
| Kelsterbach to Olbernhau | 215.70 mi (347.14 km) |
| Kelsterbach to Olching | 179.99 mi (289.67 km) |
| Kelsterbach to Oldenburg | 213.39 mi (343.42 km) |
| Kelsterbach to Oldenburg in Holstein | 309.28 mi (497.75 km) |
| Kelsterbach to Olfen | 124.81 mi (200.86 km) |
| Kelsterbach to Olpe | 72.75 mi (117.08 km) |
| Kelsterbach to Olsberg | 89.04 mi (143.29 km) |
| Kelsterbach to Oranienburg | 275.12 mi (442.76 km) |
| Kelsterbach to Ortenberg | 30.83 mi (49.61 km) |
| Kelsterbach to Oschatz | 217.81 mi (350.52 km) |
