| Port Glasgow to Os | 474.43 mi (763.53 km) |
| Port Glasgow to Oslo | 627.38 mi (1,009.67 km) |
| Port Glasgow to Porsgrunn | 576.24 mi (927.37 km) |
| Port Glasgow to Randaberg | 437.02 mi (703.32 km) |
| Port Glasgow to Ringsaker | 658.52 mi (1,059.78 km) |
| Port Glasgow to Royken | 613.16 mi (986.79 km) |
| Port Glasgow to Rygge | 615.31 mi (990.25 km) |
| Port Glasgow to Sand | 594.14 mi (956.18 km) |
| Port Glasgow to Sande | 602.77 mi (970.06 km) |
| Port Glasgow to Sandefjord | 593.81 mi (955.65 km) |
| Port Glasgow to Sandnes | 436.79 mi (702.94 km) |
| Port Glasgow to Sandvika | 619.43 mi (996.87 km) |
| Port Glasgow to Sarpsborg | 627.18 mi (1,009.34 km) |
| Port Glasgow to Sem | 600.38 mi (966.22 km) |
| Port Glasgow to Ski | 628.71 mi (1,011.82 km) |
