| Williamstown to Paimio | 4,123.52 mi (6,636.16 km) |
| Williamstown to Pargas | 4,116.27 mi (6,624.50 km) |
| Williamstown to Pedersore | 4,022.43 mi (6,473.47 km) |
| Williamstown to Pieksamaki | 4,189.55 mi (6,742.43 km) |
| Williamstown to Pirkkala | 4,118.64 mi (6,628.31 km) |
| Williamstown to Pori | 4,063.93 mi (6,540.26 km) |
| Williamstown to Porvoo | 4,213.75 mi (6,781.38 km) |
| Williamstown to Poytya | 4,111.91 mi (6,617.48 km) |
| Williamstown to Raahe | 4,038.40 mi (6,499.18 km) |
| Williamstown to Raisio | 4,106.36 mi (6,608.56 km) |
| Williamstown to Raseborg | 4,161.24 mi (6,696.88 km) |
| Williamstown to Rauma | 4,065.91 mi (6,543.44 km) |
| Williamstown to Riihimaki | 4,175.69 mi (6,720.12 km) |
| Williamstown to Rovaniemi | 4,013.58 mi (6,459.23 km) |
| Williamstown to Saaminki | 4,253.32 mi (6,845.07 km) |
