| Seal Beach to Lombard (Illinois) | 1,723.37 mi (2,773.49 km) |
| Seal Beach to Lomita (California) | 14.39 mi (23.16 km) |
| Seal Beach to Lompoc (California) | 150.79 mi (242.67 km) |
| Seal Beach to London (Ohio) | 1,949.06 mi (3,136.71 km) |
| Seal Beach to Lone Tree (Colorado) | 832.35 mi (1,339.54 km) |
| Seal Beach to Long Beach (California) | 6.26 mi (10.07 km) |
| Seal Beach to Long Beach (Mississippi) | 1,703.21 mi (2,741.05 km) |
| Seal Beach to Long Beach (New York) | 2,463.30 mi (3,964.30 km) |
| Seal Beach to Long Branch (New Jersey) | 2,447.49 mi (3,938.85 km) |
| Seal Beach to Longmont (Colorado) | 840.82 mi (1,353.17 km) |
| Seal Beach to Longview (Texas) | 1,348.42 mi (2,170.08 km) |
| Seal Beach to Longview (Washington) | 894.08 mi (1,438.88 km) |
| Seal Beach to Longwood (Florida) | 2,185.96 mi (3,517.96 km) |
| Seal Beach to Lorain (Ohio) | 2,019.33 mi (3,249.80 km) |
| Seal Beach to Lorton (Virginia) | 2,283.58 mi (3,675.06 km) |
