| Ritterhude to Portage (Michigan) | 4,126.78 mi (6,641.41 km) |
| Ritterhude to Portage (Wisconsin) | 4,193.61 mi (6,748.97 km) |
| Ritterhude to Portales (New Mexico) | 5,164.51 mi (8,311.47 km) |
| Ritterhude to Porterville (California) | 5,524.15 mi (8,890.26 km) |
| Ritterhude to Portland (Maine) | 3,492.92 mi (5,621.31 km) |
| Ritterhude to Portland (Oregon) | 5,038.02 mi (8,107.90 km) |
| Ritterhude to Portland (Tennessee) | 4,445.81 mi (7,154.84 km) |
| Ritterhude to Portland (Texas) | 5,308.57 mi (8,543.32 km) |
| Ritterhude to Portsmouth (New Hampshire) | 3,540.27 mi (5,697.52 km) |
| Ritterhude to Portsmouth (Ohio) | 4,203.58 mi (6,765.00 km) |
| Ritterhude to Portsmouth (Virginia) | 4,049.13 mi (6,516.45 km) |
| Ritterhude to Post Falls (Idaho) | 4,772.71 mi (7,680.94 km) |
| Ritterhude to Potomac (Maryland) | 3,975.01 mi (6,397.16 km) |
| Ritterhude to Potomac Park (California) | 5,564.75 mi (8,955.59 km) |
| Ritterhude to Pottstown (Pennsylvania) | 3,856.31 mi (6,206.13 km) |
