| Duncan to Syston | 4,625.66 mi (7,444.28 km) |
| Duncan to Tadley | 4,666.55 mi (7,510.09 km) |
| Duncan to Tadworth | 4,702.52 mi (7,567.97 km) |
| Duncan to Tamworth | 4,604.82 mi (7,410.75 km) |
| Duncan to Taunton | 4,601.38 mi (7,405.21 km) |
| Duncan to Tavistock | 4,574.79 mi (7,362.41 km) |
| Duncan to Teignmouth | 4,600.63 mi (7,403.99 km) |
| Duncan to Telford | 4,575.30 mi (7,363.23 km) |
| Duncan to Tewkesbury | 4,607.37 mi (7,414.84 km) |
| Duncan to Thame | 4,660.09 mi (7,499.69 km) |
| Duncan to Thames Ditton | 4,696.03 mi (7,557.52 km) |
| Duncan to Thatcham | 4,659.98 mi (7,499.51 km) |
| Duncan to Thatto Heath | 4,541.01 mi (7,308.04 km) |
| Duncan to The Mumbles | 4,549.64 mi (7,321.93 km) |
| Duncan to Thetford | 4,702.59 mi (7,568.09 km) |
