| Summerville to Olympia (Washington) | 2,422.64 mi (3,898.86 km) |
| Summerville to Olympia Heights (Florida) | 502.92 mi (809.38 km) |
| Summerville to Omaha (Nebraska) | 1,041.58 mi (1,676.26 km) |
| Summerville to On Top of the World Designated Place (Florida) | 296.63 mi (477.38 km) |
| Summerville to Onalaska (Wisconsin) | 958.32 mi (1,542.27 km) |
| Summerville to Oneida (New York) | 737.96 mi (1,187.64 km) |
| Summerville to Oneonta (New York) | 710.07 mi (1,142.75 km) |
| Summerville to Ontario (California) | 2,144.96 mi (3,451.98 km) |
| Summerville to Ontario (Oregon) | 2,109.06 mi (3,394.21 km) |
| Summerville to Opa-locka (Florida) | 490.71 mi (789.73 km) |
| Summerville to Opelika (Alabama) | 302.61 mi (487.00 km) |
| Summerville to Opelousas (Louisiana) | 719.35 mi (1,157.68 km) |
| Summerville to Orange (California) | 2,159.70 mi (3,475.70 km) |
| Summerville to Orange (Texas) | 823.24 mi (1,324.87 km) |
| Summerville to Orange City (Florida) | 288.55 mi (464.38 km) |
