| Elkhart to Oerlinghausen | 4,205.90 mi (6,768.74 km) |
| Elkhart to Oestrich-Winkel | 4,252.92 mi (6,844.41 km) |
| Elkhart to Offenburg | 4,307.17 mi (6,931.72 km) |
| Elkhart to Oftersheim | 4,298.29 mi (6,917.43 km) |
| Elkhart to Ohrdruf | 4,323.26 mi (6,957.61 km) |
| Elkhart to Ohringen | 4,339.30 mi (6,983.43 km) |
| Elkhart to Olbernhau | 4,423.62 mi (7,119.13 km) |
| Elkhart to Olching | 4,446.62 mi (7,156.15 km) |
| Elkhart to Oldenburg | 4,147.55 mi (6,674.84 km) |
| Elkhart to Oldenburg in Holstein | 4,199.37 mi (6,758.23 km) |
| Elkhart to Olfen | 4,168.01 mi (6,707.76 km) |
| Elkhart to Olpe | 4,209.68 mi (6,774.82 km) |
| Elkhart to Olsberg | 4,221.57 mi (6,793.96 km) |
| Elkhart to Oranienburg | 4,338.55 mi (6,982.21 km) |
| Elkhart to Ortenberg | 4,279.24 mi (6,886.77 km) |
