| Portsmouth to Trim | 307.23 mi (494.45 km) |
| Portsmouth to Tuam | 378.29 mi (608.80 km) |
| Portsmouth to Tullamore | 321.07 mi (516.72 km) |
| Portsmouth to Waterford | 278.27 mi (447.83 km) |
| Portsmouth to Wexford | 253.57 mi (408.09 km) |
| Portsmouth to Wicklow | 258.75 mi (416.42 km) |
| Portsmouth to Abano Terme | 701.98 mi (1,129.73 km) |
| Portsmouth to Abbiategrasso | 592.89 mi (954.16 km) |
| Portsmouth to Acate | 1,222.30 mi (1,967.10 km) |
| Portsmouth to Acerra | 1,004.42 mi (1,616.46 km) |
| Portsmouth to Aci Castello | 1,213.23 mi (1,952.50 km) |
| Portsmouth to Aci Catena | 1,210.34 mi (1,947.85 km) |
| Portsmouth to Aci Sant'Antonio | 1,209.81 mi (1,946.99 km) |
| Portsmouth to Acireale | 1,210.48 mi (1,948.08 km) |
| Portsmouth to Acquaviva delle Fonti | 1,096.65 mi (1,764.89 km) |
