The five-man team hopes to become the first to use human power to circumnavigate Russia's Lake Baikal in winter — as well as the first to bicycle around the lake's entire 1,300-mile shoreline.

Lake Baikal, the world's deepest lake located in Russia, has still not frozen over amid a relatively warm winter, according to images taken by the Russian meteorological satellite Meteor-M.

Train journeys are more than just a mode of transport—they are an adventure in themselves. From the icy wilderness of Siberia ...