| Olbia to Clermont (Florida) | 5,017.58 mi (8,075.01 km) |
| Olbia to Cleveland (Mississippi) | 5,208.94 mi (8,382.97 km) |
| Olbia to Cleveland (Ohio) | 4,493.22 mi (7,231.14 km) |
| Olbia to Cleveland (Tennessee) | 4,885.79 mi (7,862.92 km) |
| Olbia to Cleveland Heights (Ohio) | 4,486.85 mi (7,220.88 km) |
| Olbia to Cliffside Park (New Jersey) | 4,177.47 mi (6,722.99 km) |
| Olbia to Clifton (Colorado) | 5,671.09 mi (9,126.74 km) |
| Olbia to Clifton (New Jersey) | 4,183.69 mi (6,733.00 km) |
| Olbia to Clinton (Iowa) | 4,837.99 mi (7,785.99 km) |
| Olbia to Clinton (Maryland) | 4,384.34 mi (7,055.92 km) |
| Olbia to Clinton (Mississippi) | 5,253.20 mi (8,454.20 km) |
| Olbia to Clinton (Utah) | 5,690.37 mi (9,157.76 km) |
| Olbia to Clive (Iowa) | 4,991.33 mi (8,032.77 km) |
| Olbia to Cloquet (Minnesota) | 4,721.41 mi (7,598.37 km) |
| Olbia to Cloverleaf (Texas) | 5,585.19 mi (8,988.50 km) |
