| Porsgrunn to Roy (Utah) | 4,753.74 mi (7,650.41 km) |
| Porsgrunn to Royal Kunia (Hawaii) | 6,829.65 mi (10,991.26 km) |
| Porsgrunn to Royal Oak (Michigan) | 3,860.68 mi (6,213.16 km) |
| Porsgrunn to Royal Palm Beach (Florida) | 4,648.78 mi (7,481.49 km) |
| Porsgrunn to Royse City (Texas) | 4,810.38 mi (7,741.55 km) |
| Porsgrunn to Ruskin (Florida) | 4,666.22 mi (7,509.56 km) |
| Porsgrunn to Russellville (Alabama) | 4,452.62 mi (7,165.80 km) |
| Porsgrunn to Russellville (Arkansas) | 4,578.74 mi (7,368.77 km) |
| Porsgrunn to Ruston (Louisiana) | 4,722.28 mi (7,599.77 km) |
| Porsgrunn to Rutherford (New Jersey) | 3,656.83 mi (5,885.11 km) |
| Porsgrunn to Rutland (Vermont) | 3,472.99 mi (5,589.23 km) |
| Porsgrunn to Sabana Grande (Puerto Rico) | 4,680.21 mi (7,532.07 km) |
| Porsgrunn to Sachse (Texas) | 4,818.56 mi (7,754.73 km) |
| Porsgrunn to Saco (Maine) | 3,392.78 mi (5,460.15 km) |
| Porsgrunn to Sacramento (California) | 5,132.84 mi (8,260.51 km) |
