| Altadena to River Ridge (Louisiana) | 1,654.88 mi (2,663.27 km) |
| Altadena to Riverbank (California) | 290.26 mi (467.13 km) |
| Altadena to Riverdale (Georgia) | 1,926.11 mi (3,099.78 km) |
| Altadena to Riverdale (Illinois) | 1,729.87 mi (2,783.96 km) |
| Altadena to Riverside (California) | 45.85 mi (73.78 km) |
| Altadena to Riverside (Ohio) | 1,904.49 mi (3,064.99 km) |
| Altadena to Riverton (Utah) | 552.70 mi (889.49 km) |
| Altadena to Riverton (Wyoming) | 804.58 mi (1,294.85 km) |
| Altadena to Riverview (Florida) | 2,155.65 mi (3,469.18 km) |
| Altadena to Riverview (Michigan) | 1,960.82 mi (3,155.63 km) |
| Altadena to Riviera Beach (Florida) | 2,309.31 mi (3,716.47 km) |
| Altadena to Riviera Beach (Maryland) | 2,310.74 mi (3,718.78 km) |
| Altadena to Roanoke (Virginia) | 2,137.21 mi (3,439.51 km) |
| Altadena to Roanoke Rapids (North Carolina) | 2,271.02 mi (3,654.86 km) |
| Altadena to Robbinsdale (Minnesota) | 1,508.67 mi (2,427.97 km) |
