| Welwyn Garden City to Ianca | 1,338.86 mi (2,154.69 km) |
| Welwyn Garden City to Iasi | 1,279.09 mi (2,058.49 km) |
| Welwyn Garden City to Iernut | 1,158.15 mi (1,863.86 km) |
| Welwyn Garden City to Ineu | 1,058.36 mi (1,703.26 km) |
| Welwyn Garden City to Jibou | 1,091.53 mi (1,756.64 km) |
| Welwyn Garden City to Jilava | 1,309.09 mi (2,106.77 km) |
| Welwyn Garden City to Jimbolia | 1,034.51 mi (1,664.88 km) |
| Welwyn Garden City to Liesti | 1,325.23 mi (2,132.75 km) |
| Welwyn Garden City to Lipova | 1,063.55 mi (1,711.62 km) |
| Welwyn Garden City to Liteni | 1,223.81 mi (1,969.53 km) |
| Welwyn Garden City to Ludus | 1,151.59 mi (1,853.30 km) |
| Welwyn Garden City to Lugoj | 1,086.72 mi (1,748.91 km) |
| Welwyn Garden City to Lupeni | 1,153.47 mi (1,856.33 km) |
| Welwyn Garden City to Magurele | 1,306.45 mi (2,102.53 km) |
| Welwyn Garden City to Mangalia | 1,432.98 mi (2,306.15 km) |
