| Porsgrunn to Redon | 926.32 mi (1,490.77 km) |
| Porsgrunn to Reims | 717.75 mi (1,155.11 km) |
| Porsgrunn to Rennes | 889.27 mi (1,431.15 km) |
| Porsgrunn to Revel | 1,130.10 mi (1,818.72 km) |
| Porsgrunn to Reze | 944.30 mi (1,519.70 km) |
| Porsgrunn to Riedisheim | 791.18 mi (1,273.28 km) |
| Porsgrunn to Rillieux-la-Pape | 940.00 mi (1,512.78 km) |
| Porsgrunn to Riom | 953.64 mi (1,534.73 km) |
| Porsgrunn to Riorges | 933.26 mi (1,501.93 km) |
| Porsgrunn to Ris-Orangis | 780.41 mi (1,255.94 km) |
| Porsgrunn to Rive-de-Gier | 962.35 mi (1,548.75 km) |
| Porsgrunn to Rivesaltes | 1,166.54 mi (1,877.36 km) |
| Porsgrunn to Rixheim | 790.98 mi (1,272.95 km) |
| Porsgrunn to Roanne | 933.37 mi (1,502.12 km) |
| Porsgrunn to Roche-la-Moliere | 971.58 mi (1,563.60 km) |
