There was considered the interannual variability of ice conditions along the Obskaya Guba — the Bering Strait navigation route for the period 1998–2018. The electronic vector maps of ice conditions from the archives of the Arctic and Antarctic Research Institute for April and May were analyzed per ten days intervals. There were obtained the values of the length of the sections of the route in the ice of certain categories for the four sections of the route located in the Kara, East Siberian, Chukchi seas and the Laptev Sea, and for the whole route. In order to determine the direction of changes in the conditions of ice navigation, the method of integral curves was applied and the series were checked for heterogeneity using non-parametric Wilcoxon — Mann — Whitney and Siegel — Tukey homogeneity criteria. Statistical processing of the obtained series showed change of the navigation conditions