| Elkhart to Olympia Heights (Florida) | 1,148.93 mi (1,849.03 km) |
| Elkhart to Omaha (Nebraska) | 522.87 mi (841.48 km) |
| Elkhart to On Top of the World Designated Place (Florida) | 893.66 mi (1,438.20 km) |
| Elkhart to Onalaska (Wisconsin) | 306.11 mi (492.63 km) |
| Elkhart to Oneida (New York) | 533.97 mi (859.34 km) |
| Elkhart to Oneonta (New York) | 560.92 mi (902.72 km) |
| Elkhart to Ontario (California) | 1,793.68 mi (2,886.65 km) |
| Elkhart to Ontario (Oregon) | 1,569.67 mi (2,526.14 km) |
| Elkhart to Opa-locka (Florida) | 1,138.55 mi (1,832.32 km) |
| Elkhart to Opelika (Alabama) | 624.77 mi (1,005.47 km) |
| Elkhart to Opelousas (Louisiana) | 843.16 mi (1,356.93 km) |
| Elkhart to Orange (California) | 1,812.02 mi (2,916.17 km) |
| Elkhart to Orange (Texas) | 909.74 mi (1,464.08 km) |
| Elkhart to Orange City (Florida) | 919.57 mi (1,479.91 km) |
| Elkhart to Orangeburg (South Carolina) | 631.14 mi (1,015.72 km) |
