Not far from the town of Seward, there are nearly 40 glaciers making up an icefield that spans more than 300 square miles, all contained within Kenai Fjords National Park. The largest of these is Bear Glacier.
It's not far from Seward to Exit Glacier, the most easily accessible glacier in the park, but it's also possible to reach Bear Glacier from Seward – if you head out on the water. You can go on cruises that visit the many fjords in the park, and you can even go sea kayaking through the fjords.
Sea kayaking up to Bear Glacier gives you a chance to see the glacier and its iceberg-filled lagoon up close. You can also choose an overnight adventure, camping near the glacier. Even if you opt for a day cruise, you'll be treated to incomparable glacier views, plus the chance to see puffins, whales, and sea otters.
Kenai Fjords National Park is open year-round, but as you might expect it's much more difficult to reach and explore during the winter. Water tours of Bear Glacier are generally available about the same dates that the park's visitor centers are open – from Memorial Day in late May through Labor Day in early September. If you're visiting during the winter, you can still see Exit Glacier on cross-country skis, snowmobiles, or even dog sleds.