| Harrow to Opovo | 1,051.04 mi (1,691.48 km) |
| Harrow to Osecina | 1,043.95 mi (1,680.07 km) |
| Harrow to Padinska Skela | 1,054.99 mi (1,697.85 km) |
| Harrow to Pancevo | 1,066.47 mi (1,716.32 km) |
| Harrow to Paracin | 1,137.33 mi (1,830.36 km) |
| Harrow to Pecinci | 1,037.84 mi (1,670.25 km) |
| Harrow to Petrovac na Mlavi | 1,117.22 mi (1,798.00 km) |
| Harrow to Petrovaradin | 1,020.53 mi (1,642.39 km) |
| Harrow to Pirot | 1,213.74 mi (1,953.32 km) |
| Harrow to Plandiste | 1,073.03 mi (1,726.88 km) |
| Harrow to Pozarevac | 1,098.51 mi (1,767.89 km) |
| Harrow to Pozega | 1,082.68 mi (1,742.40 km) |
| Harrow to Presevo | 1,212.38 mi (1,951.14 km) |
| Harrow to Priboj | 1,073.38 mi (1,727.44 km) |
| Harrow to Prijepolje | 1,080.03 mi (1,738.14 km) |
