| Cities | Distance |
|---|---|
| Risca to Oerlinghausen | 502.58 mi (808.83 km) |
| Risca to Oestrich-Winkel | 496.34 mi (798.79 km) |
| Risca to Offenburg | 534.52 mi (860.22 km) |
| Risca to Oftersheim | 535.35 mi (861.56 km) |
| Risca to Ohrdruf | 599.77 mi (965.24 km) |
| Risca to Ohringen | 578.06 mi (930.30 km) |
| Risca to Olbernhau | 713.49 mi (1,148.24 km) |
| Risca to Olching | 681.63 mi (1,096.98 km) |
| Risca to Oldenburg | 487.95 mi (785.27 km) |
| Risca to Oldenburg in Holstein | 609.51 mi (980.91 km) |
| Risca to Olfen | 448.59 mi (721.93 km) |
| Risca to Olpe | 473.12 mi (761.42 km) |
| Risca to Olsberg | 497.86 mi (801.22 km) |
| Risca to Oranienburg | 694.74 mi (1,118.08 km) |
| Risca to Ortenberg | 534.74 mi (860.58 km) |