Marika says she likes to "go snowboarding." It is very common in English to refer to certain activities, almost always related with sports, as "go doing" something. Check out some of the more common ones:
go swimming, go bike riding, go horseback riding, go jogging, go running
Vocabulary:
By the way, Onsens, Walk around
Marika talks about the day’s weather and about the kinds of weather she likes.