| Knoxville to Noventa Vicentina | 4,747.96 mi (7,641.10 km) |
| Knoxville to Novi di Modena | 4,734.75 mi (7,619.84 km) |
| Knoxville to Novi Ligure | 4,648.95 mi (7,481.76 km) |
| Knoxville to Nuoro | 4,825.30 mi (7,765.58 km) |
| Knoxville to Occhiobello | 4,762.56 mi (7,664.60 km) |
| Knoxville to Oderzo | 4,770.66 mi (7,677.63 km) |
| Knoxville to Oggiono | 4,638.96 mi (7,465.68 km) |
| Knoxville to Olbia | 4,811.76 mi (7,743.79 km) |
| Knoxville to Oleggio | 4,614.63 mi (7,426.54 km) |
| Knoxville to Olgiate Comasco | 4,622.75 mi (7,439.59 km) |
| Knoxville to Olgiate Olona | 4,624.16 mi (7,441.87 km) |
| Knoxville to Omegna | 4,595.92 mi (7,396.41 km) |
| Knoxville to Opera | 4,646.61 mi (7,478.00 km) |
| Knoxville to Oppeano | 4,732.65 mi (7,616.47 km) |
| Knoxville to Orbassano | 4,587.02 mi (7,382.10 km) |
