| Watford to Ianca | 1,345.82 mi (2,165.89 km) |
| Watford to Iasi | 1,287.16 mi (2,071.49 km) |
| Watford to Iernut | 1,165.16 mi (1,875.15 km) |
| Watford to Ineu | 1,064.78 mi (1,713.59 km) |
| Watford to Jibou | 1,098.84 mi (1,768.42 km) |
| Watford to Jilava | 1,315.29 mi (2,116.76 km) |
| Watford to Jimbolia | 1,040.18 mi (1,674.01 km) |
| Watford to Liesti | 1,332.46 mi (2,144.38 km) |
| Watford to Lipova | 1,069.70 mi (1,721.52 km) |
| Watford to Liteni | 1,231.90 mi (1,982.56 km) |
| Watford to Ludus | 1,158.58 mi (1,864.56 km) |
| Watford to Lugoj | 1,092.67 mi (1,758.49 km) |
| Watford to Lupeni | 1,159.55 mi (1,866.11 km) |
| Watford to Magurele | 1,312.66 mi (2,112.51 km) |
| Watford to Mangalia | 1,439.51 mi (2,316.66 km) |
