| Risca to Oxford (Alabama) | 4,151.38 mi (6,681.01 km) |
| Risca to Oxford (Mississippi) | 4,262.56 mi (6,859.93 km) |
| Risca to Oxford (Ohio) | 3,826.23 mi (6,157.72 km) |
| Risca to Oxnard (California) | 5,362.18 mi (8,629.60 km) |
| Risca to Oxon Hill (Maryland) | 3,543.76 mi (5,703.13 km) |
| Risca to Ozark (Alabama) | 4,247.31 mi (6,835.39 km) |
| Risca to Ozark (Missouri) | 4,276.89 mi (6,882.98 km) |
| Risca to Pace (Florida) | 4,351.23 mi (7,002.63 km) |
| Risca to Pacific Grove (California) | 5,311.39 mi (8,547.85 km) |
| Risca to Pacifica (California) | 5,271.45 mi (8,483.58 km) |
| Risca to Paducah (Kentucky) | 4,095.64 mi (6,591.30 km) |
| Risca to Pahrump (Nevada) | 5,143.66 mi (8,277.92 km) |
| Risca to Painesville (Ohio) | 3,587.52 mi (5,773.55 km) |
| Risca to Palatine (Illinois) | 3,835.75 mi (6,173.04 km) |
| Risca to Palatka (Florida) | 4,170.25 mi (6,711.36 km) |
