| Ennis to Novi di Modena | 1,052.27 mi (1,693.46 km) |
| Ennis to Novi Ligure | 978.58 mi (1,574.87 km) |
| Ennis to Nuoro | 1,220.38 mi (1,964.01 km) |
| Ennis to Occhiobello | 1,077.21 mi (1,733.61 km) |
| Ennis to Oderzo | 1,077.76 mi (1,734.48 km) |
| Ennis to Oggiono | 955.06 mi (1,537.02 km) |
| Ennis to Olbia | 1,193.90 mi (1,921.40 km) |
| Ennis to Oleggio | 935.61 mi (1,505.71 km) |
| Ennis to Olgiate Comasco | 940.41 mi (1,513.45 km) |
| Ennis to Olgiate Olona | 943.63 mi (1,518.62 km) |
| Ennis to Omegna | 915.12 mi (1,472.74 km) |
| Ennis to Opera | 967.02 mi (1,556.26 km) |
| Ennis to Oppeano | 1,045.90 mi (1,683.22 km) |
| Ennis to Orbassano | 921.44 mi (1,482.91 km) |
| Ennis to Orbetello | 1,176.63 mi (1,893.61 km) |
