The Inn at Whittier is located about an hour south of Anchorage in the small town of Whittier, Alaska. Follow the Seward Highway south out of Anchorage along the Turnagain Arm. Turn left at Portage (about mile 40), then travel several miles to Bear Lake, the start of the Whittier tunnel.
The Whittier tunnel is generally open from 7:00am-10:30pm during the winter (Oct 1 to April 30) and from 5:30am-11:00pm during the summer (May 1 to Sept 30). The tunnel is only one lane wide and more than two miles long, so traffic is allowed through on an hourly schedule. Inbound traffic is released on the half-hour. For precise tunnel information visit the Alaska DOT web site.
The community of Whittier is serviced by Alaska Railroad's "Glacier Discovery" route. The route begins in Anchorage, usually around 9:45 am and arrives in Whittier around 12:05 pm (Noon). The trip from Anchorage to Whittier runs along the shore of Turnagain Arm (watch for Beluga Whales, Salmon and Bald Eagles!), travels through Girdwood and then jumps off the main line for the short trip into the small town of Whittier. The return leg departs Whittier at 6:45pm arriving Anchorage at 9:30pm. This service is available seasonally from mid-May to mid-September.
Get all the information you need on the Glacier Discovery Route from Alaska Railroad's website.