| Kyustendil to Oestrich-Winkel | 879.66 mi (1,415.68 km) |
| Kyustendil to Offenburg | 831.61 mi (1,338.34 km) |
| Kyustendil to Oftersheim | 834.80 mi (1,343.49 km) |
| Kyustendil to Ohrdruf | 817.15 mi (1,315.07 km) |
| Kyustendil to Ohringen | 793.43 mi (1,276.91 km) |
| Kyustendil to Olbernhau | 729.17 mi (1,173.48 km) |
| Kyustendil to Olching | 686.52 mi (1,104.84 km) |
| Kyustendil to Oldenburg | 1,003.98 mi (1,615.74 km) |
| Kyustendil to Oldenburg in Holstein | 988.87 mi (1,591.43 km) |
| Kyustendil to Olfen | 968.36 mi (1,558.42 km) |
| Kyustendil to Olpe | 924.40 mi (1,487.68 km) |
| Kyustendil to Olsberg | 915.35 mi (1,473.11 km) |
| Kyustendil to Oranienburg | 845.58 mi (1,360.83 km) |
| Kyustendil to Ortenberg | 854.37 mi (1,374.97 km) |
| Kyustendil to Oschatz | 768.92 mi (1,237.45 km) |
