| Markham to Ridgeland (Mississippi) | 648.28 mi (1,043.31 km) |
| Markham to Ridgewood (New Jersey) | 705.44 mi (1,135.30 km) |
| Markham to Rifle (Colorado) | 1,061.19 mi (1,707.81 km) |
| Markham to Rincon (Georgia) | 734.58 mi (1,182.20 km) |
| Markham to Ringwood (New Jersey) | 695.93 mi (1,119.99 km) |
| Markham to Río Grande (Puerto Rico) | 2,057.09 mi (3,310.57 km) |
| Markham to Rio Grande City (Texas) | 1,227.31 mi (1,975.17 km) |
| Markham to Rio Linda (California) | 1,782.52 mi (2,868.68 km) |
| Markham to Rio Rancho (New Mexico) | 1,114.19 mi (1,793.11 km) |
| Markham to Rio Rico (Arizona) | 1,462.88 mi (2,354.28 km) |
| Markham to Ripon (California) | 1,786.95 mi (2,875.81 km) |
| Markham to River Edge (New Jersey) | 709.80 mi (1,142.31 km) |
| Markham to River Falls (Wisconsin) | 335.24 mi (539.52 km) |
| Markham to River Forest (Illinois) | 21.44 mi (34.50 km) |
| Markham to River Grove (Illinois) | 23.66 mi (38.08 km) |
