| South Portland to Os | 3,218.55 mi (5,179.76 km) |
| South Portland to Oslo | 3,398.30 mi (5,469.04 km) |
| South Portland to Porsgrunn | 3,382.26 mi (5,443.22 km) |
| South Portland to Randaberg | 3,246.04 mi (5,224.00 km) |
| South Portland to Ringsaker | 3,375.71 mi (5,432.67 km) |
| South Portland to Royken | 3,392.19 mi (5,459.21 km) |
| South Portland to Rygge | 3,409.84 mi (5,487.61 km) |
| South Portland to Sand | 3,399.06 mi (5,470.25 km) |
| South Portland to Sande | 3,388.05 mi (5,452.54 km) |
| South Portland to Sandefjord | 3,398.88 mi (5,469.97 km) |
| South Portland to Sandnes | 3,253.09 mi (5,235.34 km) |
| South Portland to Sandvika | 3,391.70 mi (5,458.42 km) |
| South Portland to Sarpsborg | 3,425.09 mi (5,512.15 km) |
| South Portland to Sem | 3,399.18 mi (5,470.45 km) |
| South Portland to Ski | 3,407.29 mi (5,483.51 km) |
