89-km–long route from Slyudyanka-2 to port Baikal is a great opportunity to enjoy the changing views of the lake as the train rides along the shoreline from south to north and back. You will pass through 39 tunnels making several 20 min stops to take a stroll outside.
By Circum-Baikal Express, Кругобайкальский экспресс which departs from Slyudyanka. It comprises 1st, 2nd and business-class carriages which are rather relaxing. You can hear the music and sit at the bar. The ticket usually is being bought at tour agencies as excursions. In this case you will take off from Irkutsk. If you want to travel by yourself, first you will have to get to Slyudyanka/Kultuk in the south of the route or Listvyanka in the north .
It's important that food stores is scarce on the railway, so take something with you.