| Mercer Island to Oststeinbek | 4,915.16 mi (7,910.19 km) |
| Mercer Island to Ottendorf-Okrilla | 5,134.21 mi (8,262.72 km) |
| Mercer Island to Ottersberg | 4,918.91 mi (7,916.23 km) |
| Mercer Island to Ottobrunn | 5,273.58 mi (8,487.00 km) |
| Mercer Island to Ottweiler | 5,089.93 mi (8,191.44 km) |
| Mercer Island to Overath | 5,001.39 mi (8,048.96 km) |
| Mercer Island to Oyten | 4,918.25 mi (7,915.15 km) |
| Mercer Island to Paderborn | 4,990.67 mi (8,031.70 km) |
| Mercer Island to Papenburg | 4,881.42 mi (7,855.89 km) |
| Mercer Island to Parchim | 4,958.23 mi (7,979.51 km) |
| Mercer Island to Pasewalk | 4,997.84 mi (8,043.24 km) |
| Mercer Island to Passau | 5,283.74 mi (8,503.36 km) |
| Mercer Island to Pattensen | 4,981.42 mi (8,016.82 km) |
| Mercer Island to Pegnitz | 5,169.87 mi (8,320.10 km) |
| Mercer Island to Peine | 4,988.62 mi (8,028.41 km) |
