| Shasta Lake to Olivares | 5,702.86 mi (9,177.86 km) |
| Shasta Lake to Olivenza | 5,603.70 mi (9,018.28 km) |
| Shasta Lake to Olot | 5,756.41 mi (9,264.05 km) |
| Shasta Lake to Onate | 5,550.25 mi (8,932.27 km) |
| Shasta Lake to Onda | 5,783.43 mi (9,307.53 km) |
| Shasta Lake to Onteniente | 5,831.64 mi (9,385.12 km) |
| Shasta Lake to Orihuela | 5,858.44 mi (9,428.25 km) |
| Shasta Lake to Osuna | 5,751.49 mi (9,256.13 km) |
| Shasta Lake to Ourense | 5,395.44 mi (8,683.12 km) |
| Shasta Lake to Oviedo | 5,416.33 mi (8,716.74 km) |
| Shasta Lake to Paiporta | 5,806.30 mi (9,344.34 km) |
| Shasta Lake to Pajara | 5,821.04 mi (9,368.06 km) |
| Shasta Lake to Palafolls | 5,792.48 mi (9,322.10 km) |
| Shasta Lake to Palafrugell | 5,792.28 mi (9,321.78 km) |
| Shasta Lake to Palamos | 5,795.07 mi (9,326.26 km) |
