| Richterswil to Oerlinghausen | 328.20 mi (528.18 km) |
| Richterswil to Oestrich-Winkel | 194.95 mi (313.73 km) |
| Richterswil to Offenburg | 93.40 mi (150.31 km) |
| Richterswil to Oftersheim | 148.91 mi (239.65 km) |
| Richterswil to Ohrdruf | 265.95 mi (428.01 km) |
| Richterswil to Ohringen | 141.90 mi (228.36 km) |
| Richterswil to Olbernhau | 317.73 mi (511.34 km) |
| Richterswil to Olching | 139.33 mi (224.23 km) |
| Richterswil to Oldenburg | 410.09 mi (659.98 km) |
| Richterswil to Oldenburg in Holstein | 498.56 mi (802.36 km) |
| Richterswil to Olfen | 316.48 mi (509.32 km) |
| Richterswil to Olpe | 265.46 mi (427.21 km) |
| Richterswil to Olsberg | 285.75 mi (459.87 km) |
| Richterswil to Oranienburg | 432.25 mi (695.64 km) |
| Richterswil to Ortenberg | 217.49 mi (350.02 km) |
