| Dallas to Noventa Vicentina | 5,424.70 mi (8,730.21 km) |
| Dallas to Novi di Modena | 5,415.10 mi (8,714.76 km) |
| Dallas to Novi Ligure | 5,334.92 mi (8,585.72 km) |
| Dallas to Nuoro | 5,531.35 mi (8,901.84 km) |
| Dallas to Occhiobello | 5,441.12 mi (8,756.64 km) |
| Dallas to Oderzo | 5,442.33 mi (8,758.58 km) |
| Dallas to Oggiono | 5,318.19 mi (8,558.79 km) |
| Dallas to Olbia | 5,514.78 mi (8,875.19 km) |
| Dallas to Oleggio | 5,296.49 mi (8,523.88 km) |
| Dallas to Olgiate Comasco | 5,302.85 mi (8,534.12 km) |
| Dallas to Olgiate Olona | 5,305.27 mi (8,538.00 km) |
| Dallas to Omegna | 5,276.78 mi (8,492.16 km) |
| Dallas to Opera | 5,328.30 mi (8,575.07 km) |
| Dallas to Oppeano | 5,410.16 mi (8,706.81 km) |
| Dallas to Orbassano | 5,274.46 mi (8,488.42 km) |
