| River Grove to Lapua | 4,259.68 mi (6,855.30 km) |
| River Grove to Laukaa | 4,356.19 mi (7,010.61 km) |
| River Grove to Lauritsala | 4,474.30 mi (7,200.70 km) |
| River Grove to Lempaala | 4,349.43 mi (6,999.73 km) |
| River Grove to Leppavirta | 4,397.20 mi (7,076.61 km) |
| River Grove to Lieksa | 4,410.89 mi (7,098.64 km) |
| River Grove to Lieto | 4,350.65 mi (7,001.70 km) |
| River Grove to Liminka | 4,238.40 mi (6,821.04 km) |
| River Grove to Liperi | 4,433.03 mi (7,134.27 km) |
| River Grove to Lohja | 4,404.42 mi (7,088.23 km) |
| River Grove to Loimaa | 4,351.68 mi (7,003.35 km) |
| River Grove to Loviisa | 4,451.48 mi (7,163.96 km) |
| River Grove to Mantsala | 4,420.01 mi (7,113.32 km) |
| River Grove to Mariehamn | 4,299.27 mi (6,919.01 km) |
| River Grove to Masku | 4,338.29 mi (6,981.80 km) |
