| Richmond Heights to Oerlinghausen | 4,048.19 mi (6,514.93 km) |
| Richmond Heights to Oestrich-Winkel | 4,088.87 mi (6,580.40 km) |
| Richmond Heights to Offenburg | 4,138.85 mi (6,660.83 km) |
| Richmond Heights to Oftersheim | 4,133.13 mi (6,651.62 km) |
| Richmond Heights to Ohrdruf | 4,164.51 mi (6,702.13 km) |
| Richmond Heights to Ohringen | 4,174.68 mi (6,718.50 km) |
| Richmond Heights to Olbernhau | 4,267.37 mi (6,867.67 km) |
| Richmond Heights to Olching | 4,281.38 mi (6,890.22 km) |
| Richmond Heights to Oldenburg | 3,992.89 mi (6,425.94 km) |
| Richmond Heights to Oldenburg in Holstein | 4,051.01 mi (6,519.47 km) |
| Richmond Heights to Olfen | 4,008.23 mi (6,450.62 km) |
| Richmond Heights to Olpe | 4,048.33 mi (6,515.16 km) |
| Richmond Heights to Olsberg | 4,061.87 mi (6,536.95 km) |
| Richmond Heights to Oranienburg | 4,188.12 mi (6,740.13 km) |
| Richmond Heights to Ortenberg | 4,117.32 mi (6,626.19 km) |
