| Porvoo to Impruneta | 1,300.53 mi (2,093.00 km) |
| Porvoo to Induno Olona | 1,215.74 mi (1,956.55 km) |
| Porvoo to Inverigo | 1,214.22 mi (1,954.10 km) |
| Porvoo to Inveruno | 1,235.70 mi (1,988.67 km) |
| Porvoo to Inzago | 1,220.60 mi (1,964.36 km) |
| Porvoo to Iseo | 1,200.47 mi (1,931.97 km) |
| Porvoo to Isernia | 1,385.51 mi (2,229.76 km) |
| Porvoo to Isola Capo Rizzuto | 1,526.82 mi (2,457.18 km) |
| Porvoo to Isola del Liri | 1,390.54 mi (2,237.86 km) |
| Porvoo to Isola della Scala | 1,204.75 mi (1,938.85 km) |
| Porvoo to Isola Vicentina | 1,173.01 mi (1,887.78 km) |
| Porvoo to Ispica | 1,698.86 mi (2,734.06 km) |
| Porvoo to Istrana | 1,157.03 mi (1,862.05 km) |
| Porvoo to Itri | 1,417.27 mi (2,280.88 km) |
| Porvoo to Ittiri | 1,549.86 mi (2,494.26 km) |
