| Potomac to Imatra | 4,376.92 mi (7,043.97 km) |
| Potomac to Jakobstad | 4,122.88 mi (6,635.13 km) |
| Potomac to Jamsa | 4,251.74 mi (6,842.51 km) |
| Potomac to Janakkala | 4,269.66 mi (6,871.35 km) |
| Potomac to Jarvenpaa | 4,298.06 mi (6,917.06 km) |
| Potomac to Joensuu | 4,349.82 mi (7,000.36 km) |
| Potomac to Joutseno | 4,371.80 mi (7,035.74 km) |
| Potomac to Jyvaskyla | 4,254.20 mi (6,846.48 km) |
| Potomac to Jyvaskylan Maalaiskunta | 4,252.54 mi (6,843.81 km) |
| Potomac to Kaarina | 4,220.12 mi (6,791.62 km) |
| Potomac to Kajaani | 4,236.54 mi (6,818.06 km) |
| Potomac to Kalajoki | 4,137.02 mi (6,657.89 km) |
| Potomac to Kangasala | 4,233.88 mi (6,813.78 km) |
| Potomac to Kankaanpaa | 4,174.82 mi (6,718.72 km) |
| Potomac to Karhula | 4,350.05 mi (7,000.74 km) |
