| Pont-y-pwl to Oakley (California) | 5,222.60 mi (8,404.97 km) |
| Pont-y-pwl to Oakton (Virginia) | 3,553.00 mi (5,718.00 km) |
| Pont-y-pwl to Oakville (Missouri) | 4,094.95 mi (6,590.19 km) |
| Pont-y-pwl to Oatfield (Oregon) | 4,826.74 mi (7,767.89 km) |
| Pont-y-pwl to Ocala (Florida) | 4,214.56 mi (6,782.68 km) |
| Pont-y-pwl to Ocean Acres (New Jersey) | 3,391.01 mi (5,457.30 km) |
| Pont-y-pwl to Ocean City (New Jersey) | 3,425.04 mi (5,512.07 km) |
| Pont-y-pwl to Ocean Pines (Maryland) | 3,486.69 mi (5,611.29 km) |
| Pont-y-pwl to Ocean Pointe (Hawaii) | 7,169.45 mi (11,538.11 km) |
| Pont-y-pwl to Ocean Springs (Mississippi) | 4,428.48 mi (7,126.95 km) |
| Pont-y-pwl to Oceanside (California) | 5,352.68 mi (8,614.31 km) |
| Pont-y-pwl to Oceanside (New York) | 3,326.05 mi (5,352.76 km) |
| Pont-y-pwl to Ocoee (Florida) | 4,218.31 mi (6,788.71 km) |
| Pont-y-pwl to Oconomowoc (Wisconsin) | 3,807.25 mi (6,127.18 km) |
| Pont-y-pwl to Odenton (Maryland) | 3,520.14 mi (5,665.12 km) |
