| Boulder to Trim | 4,368.76 mi (7,030.84 km) |
| Boulder to Tuam | 4,297.95 mi (6,916.88 km) |
| Boulder to Tullamore | 4,354.46 mi (7,007.83 km) |
| Boulder to Waterford | 4,404.56 mi (7,088.46 km) |
| Boulder to Wexford | 4,425.63 mi (7,122.36 km) |
| Boulder to Wicklow | 4,416.58 mi (7,107.79 km) |
| Boulder to Abano Terme | 5,368.78 mi (8,640.21 km) |
| Boulder to Abbiategrasso | 5,268.01 mi (8,478.04 km) |
| Boulder to Acate | 5,885.31 mi (9,471.50 km) |
| Boulder to Acerra | 5,679.72 mi (9,140.63 km) |
| Boulder to Aci Castello | 5,882.21 mi (9,466.51 km) |
| Boulder to Aci Catena | 5,879.46 mi (9,462.08 km) |
| Boulder to Aci Sant'Antonio | 5,878.86 mi (9,461.11 km) |
| Boulder to Acireale | 5,879.81 mi (9,462.64 km) |
| Boulder to Acquaviva delle Fonti | 5,768.19 mi (9,283.01 km) |
