| Troy to Robbinsdale (Minnesota) | 534.90 mi (860.84 km) |
| Troy to Robertsville (New Jersey) | 483.53 mi (778.17 km) |
| Troy to Robinson (Texas) | 1,086.17 mi (1,748.02 km) |
| Troy to Robstown (Texas) | 1,306.13 mi (2,102.01 km) |
| Troy to Rochester (Michigan) | 7.37 mi (11.86 km) |
| Troy to Rochester (Minnesota) | 479.34 mi (771.42 km) |
| Troy to Rochester (New Hampshire) | 616.86 mi (992.74 km) |
| Troy to Rochester (New York) | 282.84 mi (455.19 km) |
| Troy to Rochester Hills (Michigan) | 5.75 mi (9.25 km) |
| Troy to Rock Hill (South Carolina) | 540.07 mi (869.15 km) |
| Troy to Rock Island (Illinois) | 389.22 mi (626.39 km) |
| Troy to Rock Springs (Wyoming) | 1,333.46 mi (2,146.00 km) |
| Troy to Rockford (Illinois) | 302.62 mi (487.02 km) |
| Troy to Rockledge (Florida) | 994.54 mi (1,600.55 km) |
| Troy to Rocklin (California) | 1,996.02 mi (3,212.28 km) |
