| Ostrow Mazowiecka to Legionowo | 50.83 mi (81.81 km) |
| Ostrow Mazowiecka to Legnica | 267.66 mi (430.76 km) |
| Ostrow Mazowiecka to Leszno | 234.05 mi (376.67 km) |
| Ostrow Mazowiecka to Lezajsk | 176.53 mi (284.09 km) |
| Ostrow Mazowiecka to Libiaz | 217.16 mi (349.49 km) |
| Ostrow Mazowiecka to Lidzbark | 92.05 mi (148.14 km) |
| Ostrow Mazowiecka to Lidzbark Warminski | 105.88 mi (170.39 km) |
| Ostrow Mazowiecka to Limanowa | 223.41 mi (359.55 km) |
| Ostrow Mazowiecka to Lipno | 114.16 mi (183.72 km) |
| Ostrow Mazowiecka to Lobez | 266.16 mi (428.34 km) |
| Ostrow Mazowiecka to Lodz | 125.20 mi (201.49 km) |
| Ostrow Mazowiecka to Lomianki | 53.51 mi (86.11 km) |
| Ostrow Mazowiecka to Lomza | 26.98 mi (43.43 km) |
| Ostrow Mazowiecka to Lowicz | 95.90 mi (154.34 km) |
| Ostrow Mazowiecka to Lubaczow | 190.43 mi (306.47 km) |
