| Waterville to Olympia (Washington) | 2,520.47 mi (4,056.30 km) |
| Waterville to Olympia Heights (Florida) | 1,430.49 mi (2,302.15 km) |
| Waterville to Omaha (Nebraska) | 1,348.66 mi (2,170.46 km) |
| Waterville to On Top of the World Designated Place (Florida) | 1,271.48 mi (2,046.24 km) |
| Waterville to Onalaska (Wisconsin) | 1,064.78 mi (1,713.60 km) |
| Waterville to Oneida (New York) | 315.77 mi (508.18 km) |
| Waterville to Oneonta (New York) | 306.82 mi (493.78 km) |
| Waterville to Ontario (California) | 2,623.94 mi (4,222.83 km) |
| Waterville to Ontario (Oregon) | 2,307.05 mi (3,712.84 km) |
| Waterville to Opa-locka (Florida) | 1,417.28 mi (2,280.89 km) |
| Waterville to Opelika (Alabama) | 1,176.76 mi (1,893.82 km) |
| Waterville to Opelousas (Louisiana) | 1,555.28 mi (2,502.98 km) |
| Waterville to Orange (California) | 2,642.88 mi (4,253.31 km) |
| Waterville to Orange (Texas) | 1,646.35 mi (2,649.54 km) |
| Waterville to Orange City (Florida) | 1,253.05 mi (2,016.58 km) |
