| South Portland to Plombieres | 3,452.63 mi (5,556.47 km) |
| South Portland to Pont-a-Celles | 3,394.35 mi (5,462.68 km) |
| South Portland to Poperinge | 3,319.23 mi (5,341.79 km) |
| South Portland to Profondeville | 3,418.74 mi (5,501.93 km) |
| South Portland to Putte | 3,391.25 mi (5,457.69 km) |
| South Portland to Puurs | 3,376.38 mi (5,433.76 km) |
| South Portland to Quaregnon | 3,376.48 mi (5,433.92 km) |
| South Portland to Raeren | 3,460.70 mi (5,569.45 km) |
| South Portland to Ranst | 3,383.98 mi (5,445.99 km) |
| South Portland to Ravels | 3,397.62 mi (5,467.94 km) |
| South Portland to Retie | 3,402.91 mi (5,476.46 km) |
| South Portland to Riemst | 3,436.59 mi (5,530.66 km) |
| South Portland to Rijkevorsel | 3,388.74 mi (5,453.65 km) |
| South Portland to Rixensart | 3,396.02 mi (5,465.36 km) |
| South Portland to Rochefort | 3,438.54 mi (5,533.79 km) |
