Langinkoski Nature Reserve is located south of the Helsinki - Virolahti road (National Road 7) in the town of Kotka, in the delta of the eastern main branch of River Kymijoki. The distance to Langinkoski is 130 km from Helsinki and 53 km from Kouvola.

Langinkoski parking areas are located at the end of Keisarinmajantie (Kotka) and by Langinkoskentie (Kotka).

Please note that there are no marked trails in the area. There are, however, many crisscrossing paths. The main trails pass by the parking areas.