| Penarth to Camas (Washington) | 4,822.28 mi (7,760.72 km) |
| Penarth to Cambridge (Maryland) | 3,517.44 mi (5,660.78 km) |
| Penarth to Cambridge (Massachusetts) | 3,149.46 mi (5,068.56 km) |
| Penarth to Camden (Arkansas) | 4,435.81 mi (7,138.75 km) |
| Penarth to Camden (New Jersey) | 3,416.63 mi (5,498.54 km) |
| Penarth to Cameron Park (California) | 5,171.33 mi (8,322.45 km) |
| Penarth to Camp Pendleton South (California) | 5,362.51 mi (8,630.13 km) |
| Penarth to Camp Springs (Maryland) | 3,541.04 mi (5,698.75 km) |
| Penarth to Camp Verde (Arizona) | 5,098.48 mi (8,205.22 km) |
| Penarth to Campbell (California) | 5,280.50 mi (8,498.15 km) |
| Penarth to Campbellsville (Kentucky) | 3,952.16 mi (6,360.38 km) |
| Penarth to Campton Hills (Illinois) | 3,860.24 mi (6,212.45 km) |
| Penarth to Canby (Oregon) | 4,848.37 mi (7,802.70 km) |
| Penarth to Candelaria (Puerto Rico) | 4,076.78 mi (6,560.94 km) |
| Penarth to Candler-McAfee (Georgia) | 4,079.87 mi (6,565.92 km) |
