| Omagh to Rosemont (California) | 4,915.91 mi (7,911.40 km) |
| Omagh to Rosemount (Minnesota) | 3,650.77 mi (5,875.35 km) |
| Omagh to Rosenberg (Texas) | 4,525.09 mi (7,282.42 km) |
| Omagh to Roseville (California) | 4,902.09 mi (7,889.16 km) |
| Omagh to Roseville (Michigan) | 3,382.79 mi (5,444.07 km) |
| Omagh to Roseville (Minnesota) | 3,641.13 mi (5,859.84 km) |
| Omagh to Rossmoor (California) | 5,085.29 mi (8,183.99 km) |
| Omagh to Rossville (Maryland) | 3,279.51 mi (5,277.85 km) |
| Omagh to Roswell (Georgia) | 3,847.54 mi (6,192.01 km) |
| Omagh to Roswell (New Mexico) | 4,643.74 mi (7,473.38 km) |
| Omagh to Round Lake (Illinois) | 3,584.44 mi (5,768.60 km) |
| Omagh to Round Lake Beach (Illinois) | 3,581.83 mi (5,764.40 km) |
| Omagh to Round Rock (Texas) | 4,542.84 mi (7,311.00 km) |
| Omagh to Rowland Heights (California) | 5,068.74 mi (8,157.35 km) |
| Omagh to Rowlett (Texas) | 4,374.23 mi (7,039.64 km) |
