| Porsgrunn to Rhosllanerchrugog | 646.37 mi (1,040.24 km) |
| Porsgrunn to Rhyl | 643.90 mi (1,036.25 km) |
| Porsgrunn to Rhymney | 717.20 mi (1,154.22 km) |
| Porsgrunn to Richmond | 658.26 mi (1,059.36 km) |
| Porsgrunn to Rickmansworth | 651.58 mi (1,048.61 km) |
| Porsgrunn to Ripley | 598.02 mi (962.42 km) |
| Porsgrunn to Ripon | 547.06 mi (880.41 km) |
| Porsgrunn to Risca | 720.04 mi (1,158.79 km) |
| Porsgrunn to Rochdale | 590.91 mi (950.98 km) |
| Porsgrunn to Rochester | 644.97 mi (1,037.99 km) |
| Porsgrunn to Rock Ferry | 627.39 mi (1,009.69 km) |
| Porsgrunn to Rogerstone | 719.97 mi (1,158.68 km) |
| Porsgrunn to Romford | 640.16 mi (1,030.24 km) |
| Porsgrunn to Romsey | 713.60 mi (1,148.43 km) |
| Porsgrunn to Ross on Wye | 690.05 mi (1,110.52 km) |
