| Cascades to Noventa Vicentina | 4,335.35 mi (6,977.07 km) |
| Cascades to Novi di Modena | 4,321.47 mi (6,954.73 km) |
| Cascades to Novi Ligure | 4,234.75 mi (6,815.16 km) |
| Cascades to Nuoro | 4,408.36 mi (7,094.57 km) |
| Cascades to Occhiobello | 4,349.59 mi (6,999.99 km) |
| Cascades to Oderzo | 4,359.04 mi (7,015.20 km) |
| Cascades to Oggiono | 4,225.98 mi (6,801.06 km) |
| Cascades to Olbia | 4,395.11 mi (7,073.25 km) |
| Cascades to Oleggio | 4,201.19 mi (6,761.16 km) |
| Cascades to Olgiate Comasco | 4,209.62 mi (6,774.72 km) |
| Cascades to Olgiate Olona | 4,210.84 mi (6,776.69 km) |
| Cascades to Omegna | 4,182.67 mi (6,731.36 km) |
| Cascades to Opera | 4,233.17 mi (6,812.62 km) |
| Cascades to Oppeano | 4,319.91 mi (6,952.23 km) |
| Cascades to Orbassano | 4,172.62 mi (6,715.18 km) |
