| Piqua to Nordwalde | 4,170.57 mi (6,711.89 km) |
| Piqua to Northeim | 4,276.90 mi (6,883.00 km) |
| Piqua to Norvenich | 4,181.41 mi (6,729.33 km) |
| Piqua to Nossen | 4,421.97 mi (7,116.47 km) |
| Piqua to Nottuln | 4,170.87 mi (6,712.37 km) |
| Piqua to Numbrecht | 4,211.99 mi (6,778.54 km) |
| Piqua to Nuremberg | 4,397.63 mi (7,077.31 km) |
| Piqua to Nurtingen | 4,359.94 mi (7,016.65 km) |
| Piqua to Nussloch | 4,310.59 mi (6,937.22 km) |
| Piqua to Ober-Ramstadt | 4,294.93 mi (6,912.02 km) |
| Piqua to Oberasbach | 4,394.25 mi (7,071.86 km) |
| Piqua to Oberderdingen | 4,323.97 mi (6,958.76 km) |
| Piqua to Oberhaching | 4,470.18 mi (7,194.07 km) |
| Piqua to Oberhausen | 4,166.85 mi (6,705.89 km) |
| Piqua to Oberhausen-Rheinhausen | 4,304.68 mi (6,927.72 km) |
