| Kerkrade to Oerlinghausen | 135.37 mi (217.85 km) |
| Kerkrade to Oestrich-Winkel | 104.04 mi (167.44 km) |
| Kerkrade to Offenburg | 185.63 mi (298.75 km) |
| Kerkrade to Oftersheim | 152.07 mi (244.73 km) |
| Kerkrade to Ohrdruf | 203.54 mi (327.57 km) |
| Kerkrade to Ohringen | 190.96 mi (307.32 km) |
| Kerkrade to Olbernhau | 317.72 mi (511.33 km) |
| Kerkrade to Olching | 298.83 mi (480.92 km) |
| Kerkrade to Oldenburg | 181.90 mi (292.75 km) |
| Kerkrade to Oldenburg in Holstein | 311.56 mi (501.41 km) |
| Kerkrade to Olfen | 81.76 mi (131.58 km) |
| Kerkrade to Olpe | 77.60 mi (124.89 km) |
| Kerkrade to Olsberg | 110.02 mi (177.05 km) |
| Kerkrade to Oranienburg | 332.72 mi (535.46 km) |
| Kerkrade to Ortenberg | 135.70 mi (218.38 km) |
