| Spello to Odessa (Texas) | 5,832.03 mi (9,385.74 km) |
| Spello to Ogden (Utah) | 5,675.67 mi (9,134.12 km) |
| Spello to Oildale (California) | 6,223.36 mi (10,015.53 km) |
| Spello to Ojus (Florida) | 5,152.81 mi (8,292.64 km) |
| Spello to Okemos (Michigan) | 4,605.91 mi (7,412.50 km) |
| Spello to Oklahoma City (Oklahoma) | 5,461.36 mi (8,789.21 km) |
| Spello to Okmulgee (Oklahoma) | 5,394.58 mi (8,681.74 km) |
| Spello to Olathe (Kansas) | 5,189.96 mi (8,352.43 km) |
| Spello to Old Jamestown (Missouri) | 5,012.74 mi (8,067.22 km) |
| Spello to Oldsmar (Florida) | 5,174.93 mi (8,328.25 km) |
| Spello to Olean (New York) | 4,386.03 mi (7,058.64 km) |
| Spello to Olive Branch (Mississippi) | 5,174.00 mi (8,326.75 km) |
| Spello to Olivehurst (California) | 6,084.71 mi (9,792.39 km) |
| Spello to Olney (Maryland) | 4,445.61 mi (7,154.51 km) |
| Spello to Olympia (Washington) | 5,650.11 mi (9,092.98 km) |
