| Sun Prairie to Odenton (Maryland) | 711.12 mi (1,144.44 km) |
| Sun Prairie to Odessa (Texas) | 1,058.41 mi (1,703.35 km) |
| Sun Prairie to Ogden (Utah) | 1,167.60 mi (1,879.08 km) |
| Sun Prairie to Oildale (California) | 1,670.13 mi (2,687.82 km) |
| Sun Prairie to Ojus (Florida) | 1,295.44 mi (2,084.80 km) |
| Sun Prairie to Okemos (Michigan) | 246.10 mi (396.06 km) |
| Sun Prairie to Oklahoma City (Oklahoma) | 691.98 mi (1,113.64 km) |
| Sun Prairie to Okmulgee (Oklahoma) | 635.25 mi (1,022.34 km) |
| Sun Prairie to Olathe (Kansas) | 415.66 mi (668.94 km) |
| Sun Prairie to Old Jamestown (Missouri) | 305.01 mi (490.87 km) |
| Sun Prairie to Oldsmar (Florida) | 1,107.73 mi (1,782.72 km) |
| Sun Prairie to Olean (New York) | 554.05 mi (891.65 km) |
| Sun Prairie to Olive Branch (Mississippi) | 568.99 mi (915.70 km) |
| Sun Prairie to Olivehurst (California) | 1,694.88 mi (2,727.65 km) |
| Sun Prairie to Olney (Maryland) | 690.60 mi (1,111.42 km) |
