| North Potomac to Rheinbach | 3,972.47 mi (6,393.07 km) |
| North Potomac to Rheinberg | 3,933.54 mi (6,330.42 km) |
| North Potomac to Rheine | 3,946.32 mi (6,350.98 km) |
| North Potomac to Rheinfelden (Baden) | 4,096.18 mi (6,592.16 km) |
| North Potomac to Ribnitz-Damgarten | 4,080.68 mi (6,567.22 km) |
| North Potomac to Richterich | 3,932.03 mi (6,327.99 km) |
| North Potomac to Riedlingen | 4,147.92 mi (6,675.43 km) |
| North Potomac to Riegelsberg | 4,009.74 mi (6,453.05 km) |
| North Potomac to Rielasingen-Worblingen | 4,134.68 mi (6,654.12 km) |
| North Potomac to Riesa | 4,201.56 mi (6,761.75 km) |
| North Potomac to Rietberg | 3,998.61 mi (6,435.14 km) |
| North Potomac to Rinteln | 4,012.78 mi (6,457.95 km) |
| North Potomac to Ritterhude | 3,972.68 mi (6,393.40 km) |
| North Potomac to Rodenbach | 4,069.82 mi (6,549.74 km) |
| North Potomac to Rodental | 4,146.72 mi (6,673.50 km) |
