| Rancho Santa Margarita to Tacoma (Washington) | 973.97 mi (1,567.45 km) |
| Rancho Santa Margarita to Tahlequah (Oklahoma) | 1,290.61 mi (2,077.04 km) |
| Rancho Santa Margarita to Takoma Park (Maryland) | 2,271.37 mi (3,655.42 km) |
| Rancho Santa Margarita to Talladega (Alabama) | 1,807.17 mi (2,908.35 km) |
| Rancho Santa Margarita to Tallahassee (Florida) | 1,956.83 mi (3,149.21 km) |
| Rancho Santa Margarita to Tallmadge (Ohio) | 2,036.73 mi (3,277.80 km) |
| Rancho Santa Margarita to Tamalpais-Homestead Valley (California) | 403.39 mi (649.20 km) |
| Rancho Santa Margarita to Tamarac (Florida) | 2,281.54 mi (3,671.79 km) |
| Rancho Santa Margarita to Tamiami (Florida) | 2,284.90 mi (3,677.19 km) |
| Rancho Santa Margarita to Tampa (Florida) | 2,111.71 mi (3,398.47 km) |
| Rancho Santa Margarita to Tanaina (Alaska) | 2,389.47 mi (3,845.48 km) |
| Rancho Santa Margarita to Tanque Verde (Arizona) | 408.37 mi (657.21 km) |
| Rancho Santa Margarita to Tarboro (North Carolina) | 2,262.29 mi (3,640.81 km) |
| Rancho Santa Margarita to Tarpon Springs (Florida) | 2,089.90 mi (3,363.36 km) |
| Rancho Santa Margarita to Tarrytown (New York) | 2,430.01 mi (3,910.73 km) |
