| Shannon to Odessa (Texas) | 4,636.65 mi (7,461.97 km) |
| Shannon to Ogden (Utah) | 4,497.72 mi (7,238.38 km) |
| Shannon to Oildale (California) | 5,049.16 mi (8,125.84 km) |
| Shannon to Ojus (Florida) | 4,039.92 mi (6,501.62 km) |
| Shannon to Okemos (Michigan) | 3,413.40 mi (5,493.33 km) |
| Shannon to Oklahoma City (Oklahoma) | 4,266.52 mi (6,866.29 km) |
| Shannon to Okmulgee (Oklahoma) | 4,200.75 mi (6,760.45 km) |
| Shannon to Olathe (Kansas) | 3,994.27 mi (6,428.15 km) |
| Shannon to Old Jamestown (Missouri) | 3,820.32 mi (6,148.20 km) |
| Shannon to Oldsmar (Florida) | 4,038.29 mi (6,499.00 km) |
| Shannon to Olean (New York) | 3,202.70 mi (5,154.26 km) |
| Shannon to Olive Branch (Mississippi) | 3,989.48 mi (6,420.44 km) |
| Shannon to Olivehurst (California) | 4,928.21 mi (7,931.18 km) |
| Shannon to Olney (Maryland) | 3,275.80 mi (5,271.89 km) |
| Shannon to Olympia (Washington) | 4,527.84 mi (7,286.86 km) |
