| Richmond Hill to Odenton (Maryland) | 558.89 mi (899.45 km) |
| Richmond Hill to Odessa (Texas) | 1,231.89 mi (1,982.54 km) |
| Richmond Hill to Ogden (Utah) | 1,807.64 mi (2,909.12 km) |
| Richmond Hill to Oildale (California) | 2,169.55 mi (3,491.56 km) |
| Richmond Hill to Ojus (Florida) | 416.61 mi (670.46 km) |
| Richmond Hill to Okemos (Michigan) | 765.57 mi (1,232.07 km) |
| Richmond Hill to Oklahoma City (Oklahoma) | 962.22 mi (1,548.55 km) |
| Richmond Hill to Okmulgee (Oklahoma) | 881.19 mi (1,418.14 km) |
| Richmond Hill to Olathe (Kansas) | 899.37 mi (1,447.39 km) |
| Richmond Hill to Old Jamestown (Missouri) | 695.97 mi (1,120.06 km) |
| Richmond Hill to Oldsmar (Florida) | 278.17 mi (447.67 km) |
| Richmond Hill to Olean (New York) | 721.03 mi (1,160.38 km) |
| Richmond Hill to Olive Branch (Mississippi) | 535.35 mi (861.56 km) |
| Richmond Hill to Olivehurst (California) | 2,298.19 mi (3,698.58 km) |
| Richmond Hill to Olney (Maryland) | 554.33 mi (892.10 km) |
