| Harrow to Poljcane | 806.88 mi (1,298.55 km) |
| Harrow to Polzela | 787.87 mi (1,267.96 km) |
| Harrow to Postojna | 773.98 mi (1,245.60 km) |
| Harrow to Prebold | 790.26 mi (1,271.80 km) |
| Harrow to Preddvor | 760.97 mi (1,224.66 km) |
| Harrow to Prevalje | 771.53 mi (1,241.66 km) |
| Harrow to Ptuj | 814.68 mi (1,311.10 km) |
| Harrow to Puconci | 816.21 mi (1,313.57 km) |
| Harrow to Race | 805.85 mi (1,296.89 km) |
| Harrow to Radece | 800.05 mi (1,287.56 km) |
| Harrow to Radenci | 813.73 mi (1,309.58 km) |
| Harrow to Radlje ob Dravi | 781.57 mi (1,257.82 km) |
| Harrow to Radovljica | 749.71 mi (1,206.55 km) |
| Harrow to Ravne na Koroskem | 773.64 mi (1,245.05 km) |
| Harrow to Razkrizje | 828.12 mi (1,332.73 km) |
