| Southborough to Radauti | 1,167.43 mi (1,878.80 km) |
| Southborough to Ramnicu Sarat | 1,287.01 mi (2,071.25 km) |
| Southborough to Ramnicu Valcea | 1,181.35 mi (1,901.19 km) |
| Southborough to Rasnov | 1,211.54 mi (1,949.78 km) |
| Southborough to Reghin | 1,143.40 mi (1,840.12 km) |
| Southborough to Resita | 1,069.46 mi (1,721.13 km) |
| Southborough to Roman | 1,235.05 mi (1,987.62 km) |
| Southborough to Rosiori de Vede | 1,242.48 mi (1,999.58 km) |
| Southborough to Rovinari | 1,136.60 mi (1,829.19 km) |
| Southborough to Roznov | 1,219.58 mi (1,962.72 km) |
| Southborough to Sabaoani | 1,229.21 mi (1,978.22 km) |
| Southborough to Sacele | 1,221.38 mi (1,965.62 km) |
| Southborough to Sacueni | 1,014.61 mi (1,632.86 km) |
| Southborough to Salcea | 1,191.77 mi (1,917.96 km) |
| Southborough to Salonta | 1,011.27 mi (1,627.48 km) |
