A combination train ride and cruise of 12 days to Alaska's Inside Passage is being offered by Circle America Tours of St. Louis. The cruise portion is a seven-day trip from Vancouver to Alaska. Ports of call are Ketchikan, Juneau, Skagway and Wrangell, and the Davidson and Rainbow glaciers.

The train from Los Angeles takes participants to Seattle, where they go by bus to Vancouver. Departing May 16 and every Wednesday thereafter through Sept. 12, the trip costs $1,941 to $2,033 per person.Round-trip Amtrak transportation, transfers and baggage handling tips are part of the price. For more information, contact Circle America, 7531 Ravensridge Road, St. Louis, Mo. 63119.