| Slupca to Ridgeland (Mississippi) | 5,158.31 mi (8,301.50 km) |
| Slupca to Ridgewood (New Jersey) | 4,132.07 mi (6,649.92 km) |
| Slupca to Rifle (Colorado) | 5,304.30 mi (8,536.45 km) |
| Slupca to Rincon (Georgia) | 4,841.01 mi (7,790.86 km) |
| Slupca to Ringwood (New Jersey) | 4,131.97 mi (6,649.76 km) |
| Slupca to Río Grande (Puerto Rico) | 4,957.71 mi (7,978.67 km) |
| Slupca to Rio Grande City (Texas) | 5,799.92 mi (9,334.07 km) |
| Slupca to Rio Linda (California) | 5,691.76 mi (9,159.99 km) |
| Slupca to Rio Rancho (New Mexico) | 5,526.56 mi (8,894.14 km) |
| Slupca to Rio Rico (Arizona) | 5,876.58 mi (9,457.44 km) |
| Slupca to Ripon (California) | 5,744.76 mi (9,245.29 km) |
| Slupca to River Edge (New Jersey) | 4,132.03 mi (6,649.86 km) |
| Slupca to River Falls (Wisconsin) | 4,561.71 mi (7,341.36 km) |
| Slupca to River Forest (Illinois) | 4,566.46 mi (7,349.01 km) |
| Slupca to River Grove (Illinois) | 4,565.52 mi (7,347.50 km) |
