On the platform in Anchorage, the question comes up as soon as people compare tickets: one train heads for Seward, another for Denali, and a third turns off toward glaciers that no road reaches. The Glacier Discovery Train is that third one, a day-trip railroad into the Chugach mountains with stops at a bear sanctuary, a glacial lake and the tunnel town of Whittier. It suits travelers who want to step off a train and into the backcountry.
Where does the Glacier Discovery train go?
The Glacier Discovery Train runs from Anchorage to Grandview, calling at Girdwood, Whittier, Portage and Spencer along the way. It follows much of the same line as the Coastal Classic train, then adds a turn off the main line to reach Whittier, and Grandview is where it turns around.
What sets it apart from a scenic ride is that several of its stops are areas reachable only by train. The railroad describes these as day-trip options for all ages and energy levels, so one carriage can hold a family going to see animals, a couple going to a cruise and a group heading for a glacier lake with a raft.
Girdwood and the Whittier branch
The train pauses briefly at Girdwood, a resort town, before carrying on toward Whittier. The stop is a quick one, so think of Girdwood as a place the train passes through rather than a place the schedule gives you time to explore. If Girdwood is your destination, it is also where the round-trip service to Whittier can begin or end in May.
At Whittier the train travels through a mountain tunnel and arrives at a town at the head of the Passage Canal, about 58 miles southeast of Anchorage. The train connects here with a glacier and wildlife cruise in Prince William Sound.
Whittier is nicknamed The Town Under One Roof, because almost all of its residents live in a single building, the Begich Towers Condominium. It is also a port for the Alaska Marine Highway, and the city runs a seaplane dock.
The climate matches the scenery. Whittier is extremely wet, with an average of 197.31 inches of precipitation a year, so the mountains around the harbor often sit in cloud. Pack for rain and treat clear views as a bonus.
Portage and the Alaska Wildlife Conservation Center
At Portage, passengers may get off to visit the Alaska Wildlife Conservation Center. It is home to black and brown bears, moose, caribou, wood bison and more, which makes it the stop where animals are guaranteed to be in front of you, unlike the wild sightings that are only ever a chance.
It is a good fit for families and for anyone who wants a close look at northern animals. Moose and bison are big up close, and the bears give you time to watch their behavior instead of a glimpse across a valley.
Spencer Glacier Whistle Stop
Spencer is the stop that gives the train its name. The Spencer Glacier Whistle Stop is a backcountry area in the Chugach National Forest, developed with the U.S. Forest Service. From the train, a 1.3-mile gravel path leads to Spencer Lake and views of Spencer Glacier, where ice meets a lake in a basin ringed by peaks.
Day trips here include rafting, hiking and kayaking around the glacial lake. The scenery is the draw. Chunks of ice may float on the water, and the light on the glacier changes with every passing cloud.
When does it run?
The Glacier Discovery Train runs its full route, Anchorage to Grandview with stops at Girdwood, Whittier, Portage and Spencer, from May 29 to September 12, 2027. For a trip in the coming summer, that is the window in which Spencer Glacier and the other whistle stops can be reached by this train. Outside those dates the full route is not running, so a plan built around Spencer Lake or Portage needs to fall inside them.
Early round trips to Whittier
Before the full route opens, there is a brief window with a smaller service. In 2027, the Glacier Discovery Train offers round-trip service from Anchorage or Girdwood to Whittier on May 15, 16, 17 and 19. These are the only days named for that service.
It suits travelers who mainly want the tunnel ride and the harbor town, perhaps for a glacier and wildlife cruise in Prince William Sound. It does not include the Spencer or Portage stops, which belong to the full-route season.
The other Alaska Railroad trains in the same season
Travelers often combine this train with others, so it helps to see how the seasons line up. The Coastal Classic covers Anchorage, Girdwood and Seward, the Denali Star runs to Fairbanks, and the Hurricane Turn is the summer train between Talkeetna and Hurricane.
| Train | Route | Season in 2027 |
|---|---|---|
| Coastal Classic | Anchorage, Girdwood, Seward | Daily, May 14 to September 12 |
| Denali Star | Anchorage to Fairbanks | May 12 to September 16 (northbound only on May 12, southbound only on September 16) |
| Hurricane Turn Summer Train | Talkeetna to Hurricane | Thursday through Monday, May 13 to September 12 |
The Coastal Classic leaves Anchorage northbound… at 6:45 AM, reaching Seward at 11:20 AM, and returns southbound from Seward at 6:00 PM, arriving in Anchorage at 10:15 PM. Because it shares much of its line with the Glacier Discovery, the early stretch out of Anchorage looks familiar from one train to the other. The full-route end date for the Glacier Discovery matches the Coastal Classic’s final day, which makes September 12, 2027, the last day for both of those trains.
What should you know before you book?
The Glacier Discovery Train offers Adventure Class service only, so there is no upgraded cabin to choose between. The decision to make is which stop is your destination: the Whittier tunnel and cruise connection, the animals at Portage or the lake at Spencer.
Luggage and the day trip
Each ticketed passenger on the Alaska Railroad may check two pieces of luggage, and each checked bag has a weight limit of 50 pounds. Luggage storage is not available at any Alaska Railroad station, which matters if you are arriving in Anchorage early or heading off to a cruise from Whittier.
Extra items cost money. The railroad charges the same fee per item for bikes and for excess, oversized and overweight bags, and a separate fee per kennel for animals.
| Item | Fee |
|---|---|
| Bike, excess, oversized or overweight bag (per item) | $20.00 |
| Animal in a kennel (per kennel) | $20.00 |
Animals, firearms and weapons
All animals travel in the baggage car in a kennel that the passenger provides. Only service animals are permitted in passenger cars. Anyone planning a day at Spencer with a dog should know this before buying tickets.
Firearms are not allowed inside passenger coaches or depots. They may be transported in the baggage car only if unloaded, stored in a locking hard-sided case, and with the bolt action removed or a trigger locking guard applied. Concealed weapons are not allowed onboard any Alaska Railroad train or in any depot.
Choosing your stop
The stops suit different kinds of days. Portage is built around a visit to the wildlife center, Spencer around a path to the lake and the activities on it, and Whittier around the harbor and the cruise connection. Because Spencer is a backcountry area in the Chugach National Forest, it is the stop that feels most like leaving the railroad behind.
For a trip with several people of different ages, the railroad’s own description helps: its day trips are meant for all ages and energy levels. Rafting, hiking and kayaking on the lake give the group options once you step off at Spencer.
Good to know before you go
Whittier’s wet climate is the main thing to plan around, since rain and low cloud are common there. The harbor is also a working port for the Alaska Marine Highway, with a seaplane dock run by the city, so the waterfront feels busy even in a small town.
The Spencer path is gravel and the area is backcountry, so a day there is a day outdoors. Bring layers for rain and a way to carry your gear, because there is no luggage storage at the stations.
Sources
- Alaska Railroad, Glacier Discovery (https://www.alaskarailroad.com/ride-a-train/our-trains/glacier-discovery), checked October 11, 2026
- Alaska Railroad, Train schedules (https://www.alaskarailroad.com/ride-a-train/schedules), checked October 11, 2026
- Alaska Railroad, Train fares (https://www.alaskarailroad.com/ride-a-train/fares), checked October 11, 2026
- Alaska Railroad, Baggage policy (https://www.alaskarailroad.com/ride-a-train/baggage), checked October 11, 2026
- Wikipedia, Whittier, Alaska (https://en.wikipedia.org/wiki/Whittier,_Alaska), checked October 11, 2026