| Thonotosassa to Olympia (Washington) | 2,542.66 mi (4,092.01 km) |
| Thonotosassa to Olympia Heights (Florida) | 200.54 mi (322.74 km) |
| Thonotosassa to Omaha (Nebraska) | 1,199.19 mi (1,929.92 km) |
| Thonotosassa to On Top of the World Designated Place (Florida) | 73.20 mi (117.80 km) |
| Thonotosassa to Onalaska (Wisconsin) | 1,201.01 mi (1,932.84 km) |
| Thonotosassa to Oneida (New York) | 1,102.38 mi (1,774.11 km) |
| Thonotosassa to Oneonta (New York) | 1,074.71 mi (1,729.58 km) |
| Thonotosassa to Ontario (California) | 2,120.37 mi (3,412.40 km) |
| Thonotosassa to Ontario (Oregon) | 2,206.94 mi (3,551.72 km) |
| Thonotosassa to Opa-locka (Florida) | 194.20 mi (312.53 km) |
| Thonotosassa to Opelika (Alabama) | 368.07 mi (592.36 km) |
| Thonotosassa to Opelousas (Louisiana) | 614.11 mi (988.32 km) |
| Thonotosassa to Orange (California) | 2,132.36 mi (3,431.70 km) |
| Thonotosassa to Orange (Texas) | 706.91 mi (1,137.66 km) |
| Thonotosassa to Orange City (Florida) | 86.47 mi (139.16 km) |
