| Niagara Falls to Totana | 3,944.89 mi (6,348.69 km) |
| Niagara Falls to Trujillo | 3,681.89 mi (5,925.44 km) |
| Niagara Falls to Tudela | 3,788.90 mi (6,097.64 km) |
| Niagara Falls to Tudela de Duero | 3,670.91 mi (5,907.75 km) |
| Niagara Falls to Tuineje | 3,690.16 mi (5,938.73 km) |
| Niagara Falls to Ubeda | 3,849.19 mi (6,194.68 km) |
| Niagara Falls to Ubrique | 3,798.98 mi (6,113.86 km) |
| Niagara Falls to Umbrete | 3,741.60 mi (6,021.52 km) |
| Niagara Falls to Utebo | 3,828.27 mi (6,161.00 km) |
| Niagara Falls to Utiel | 3,893.71 mi (6,266.31 km) |
| Niagara Falls to Utrera | 3,766.18 mi (6,061.09 km) |
| Niagara Falls to Valdemorillo | 3,730.46 mi (6,003.59 km) |
| Niagara Falls to Valdemoro | 3,759.03 mi (6,049.57 km) |
| Niagara Falls to Valdepenas | 3,821.11 mi (6,149.48 km) |
| Niagara Falls to Valencia | 3,935.05 mi (6,332.85 km) |
