| South Bend to Odenton (Maryland) | 535.00 mi (861.01 km) |
| South Bend to Odessa (Texas) | 1,114.69 mi (1,793.92 km) |
| South Bend to Ogden (Utah) | 1,326.24 mi (2,134.37 km) |
| South Bend to Oildale (California) | 1,810.29 mi (2,913.38 km) |
| South Bend to Ojus (Florida) | 1,140.57 mi (1,835.57 km) |
| South Bend to Okemos (Michigan) | 118.67 mi (190.98 km) |
| South Bend to Oklahoma City (Oklahoma) | 742.60 mi (1,195.10 km) |
| South Bend to Okmulgee (Oklahoma) | 671.27 mi (1,080.30 km) |
| South Bend to Olathe (Kansas) | 490.00 mi (788.57 km) |
| South Bend to Old Jamestown (Missouri) | 288.47 mi (464.25 km) |
| South Bend to Oldsmar (Florida) | 963.08 mi (1,549.93 km) |
| South Bend to Olean (New York) | 404.02 mi (650.20 km) |
| South Bend to Olive Branch (Mississippi) | 502.77 mi (809.14 km) |
| South Bend to Olivehurst (California) | 1,852.94 mi (2,982.02 km) |
| South Bend to Olney (Maryland) | 514.18 mi (827.50 km) |
