| Ramnicu Valcea to Odessa (Texas) | 6,155.92 mi (9,907.00 km) |
| Ramnicu Valcea to Ogden (Utah) | 5,890.18 mi (9,479.33 km) |
| Ramnicu Valcea to Oildale (California) | 6,420.76 mi (10,333.22 km) |
| Ramnicu Valcea to Ojus (Florida) | 5,619.24 mi (9,043.30 km) |
| Ramnicu Valcea to Okemos (Michigan) | 4,956.44 mi (7,976.62 km) |
| Ramnicu Valcea to Oklahoma City (Oklahoma) | 5,792.55 mi (9,322.21 km) |
| Ramnicu Valcea to Okmulgee (Oklahoma) | 5,733.03 mi (9,226.42 km) |
| Ramnicu Valcea to Olathe (Kansas) | 5,515.27 mi (8,875.96 km) |
| Ramnicu Valcea to Old Jamestown (Missouri) | 5,361.04 mi (8,627.77 km) |
| Ramnicu Valcea to Oldsmar (Florida) | 5,620.20 mi (9,044.83 km) |
| Ramnicu Valcea to Olean (New York) | 4,766.30 mi (7,670.62 km) |
| Ramnicu Valcea to Olive Branch (Mississippi) | 5,547.75 mi (8,928.23 km) |
| Ramnicu Valcea to Olivehurst (California) | 6,247.28 mi (10,054.03 km) |
| Ramnicu Valcea to Olney (Maryland) | 4,851.01 mi (7,806.95 km) |
| Ramnicu Valcea to Olympia (Washington) | 5,766.86 mi (9,280.86 km) |
