| Rockford to Los Alamitos (California) | 1,672.99 mi (2,692.41 km) |
| Rockford to Los Alamos (New Mexico) | 1,020.62 mi (1,642.53 km) |
| Rockford to Los Altos (California) | 1,773.82 mi (2,854.68 km) |
| Rockford to Los Angeles (California) | 1,679.98 mi (2,703.67 km) |
| Rockford to Los Banos (California) | 1,717.40 mi (2,763.88 km) |
| Rockford to Los Gatos (California) | 1,770.14 mi (2,848.76 km) |
| Rockford to Los Lunas (New Mexico) | 1,083.99 mi (1,744.51 km) |
| Rockford to Los Osos (California) | 1,765.37 mi (2,841.10 km) |
| Rockford to Loudoun Valley Estates (Virginia) | 646.59 mi (1,040.59 km) |
| Rockford to Louisville (Colorado) | 850.49 mi (1,368.73 km) |
| Rockford to Louisville (Kentucky) | 335.28 mi (539.59 km) |
| Rockford to Lovejoy (Georgia) | 661.65 mi (1,064.83 km) |
| Rockford to Loveland (Colorado) | 838.37 mi (1,349.23 km) |
| Rockford to Loveland (Ohio) | 324.85 mi (522.79 km) |
| Rockford to Loves Park (Illinois) | 6.30 mi (10.14 km) |
