| Alton to Portage (Michigan) | 3,833.03 mi (6,168.66 km) |
| Alton to Portage (Wisconsin) | 3,919.81 mi (6,308.32 km) |
| Alton to Portales (New Mexico) | 4,902.95 mi (7,890.53 km) |
| Alton to Porterville (California) | 5,340.42 mi (8,594.58 km) |
| Alton to Portland (Maine) | 3,158.58 mi (5,083.24 km) |
| Alton to Portland (Oregon) | 4,907.51 mi (7,897.87 km) |
| Alton to Portland (Tennessee) | 4,130.26 mi (6,647.02 km) |
| Alton to Portland (Texas) | 4,999.65 mi (8,046.15 km) |
| Alton to Portsmouth (New Hampshire) | 3,204.24 mi (5,156.73 km) |
| Alton to Portsmouth (Ohio) | 3,885.13 mi (6,252.51 km) |
| Alton to Portsmouth (Virginia) | 3,701.77 mi (5,957.43 km) |
| Alton to Post Falls (Idaho) | 4,626.06 mi (7,444.92 km) |
| Alton to Potomac (Maryland) | 3,639.30 mi (5,856.89 km) |
| Alton to Potomac Park (California) | 5,378.11 mi (8,655.23 km) |
| Alton to Pottstown (Pennsylvania) | 3,521.34 mi (5,667.05 km) |
