| North Tustin to Orangevale (California) | 390.10 mi (627.80 km) |
| North Tustin to Orchards (Washington) | 861.12 mi (1,385.85 km) |
| North Tustin to Orcutt (California) | 168.27 mi (270.80 km) |
| North Tustin to Oregon (Ohio) | 1,941.48 mi (3,124.52 km) |
| North Tustin to Oregon (Wisconsin) | 1,654.27 mi (2,662.30 km) |
| North Tustin to Oregon City (Oregon) | 839.40 mi (1,350.89 km) |
| North Tustin to Orem (Utah) | 562.59 mi (905.40 km) |
| North Tustin to Orinda (California) | 375.74 mi (604.69 km) |
| North Tustin to Orland Park (Illinois) | 1,713.97 mi (2,758.37 km) |
| North Tustin to Orlando (Florida) | 2,175.71 mi (3,501.47 km) |
| North Tustin to Ormond Beach (Florida) | 2,171.40 mi (3,494.54 km) |
| North Tustin to Oro Valley (Arizona) | 405.34 mi (652.33 km) |
| North Tustin to Oroville (California) | 447.94 mi (720.88 km) |
| North Tustin to Oshkosh (Wisconsin) | 1,712.55 mi (2,756.08 km) |
| North Tustin to Oskaloosa (Iowa) | 1,466.75 mi (2,360.50 km) |
