Banff and Jasper are two national parks joined at the top of one road. Banff grew up around a hot spring at Cave and Basin in the 1880s and is Canada's first national park. Jasper, set aside as a forest park in 1907, is bigger and quieter. Both parks belong to the Canadian Rocky Mountain Parks UNESCO site, listed in 1984. The 232 km Icefields Parkway links them, and that road is the reason to see both in one trip. Jasper is also a town still rebuilding: the July 2024 wildfire destroyed 358 of the 1,113 buildings in its townsite, and this guide says what has reopened and what has not.
Five days is the length that works because the headline sights here are far apart and each needs its own morning. Banff town, the Bow Valley Parkway and Lake Louise take two days, Moraine Lake and its tea house hike one, the Icefields Parkway a whole day of driving, and Jasper one more. It is a summer plan for June to September, with the shoulder months covered below. For skiing and the frozen lakes, see 5 Days in Banff. Expect crowds, a reservation for Moraine Lake, a rental car and a long Day 4.
The plan runs Monday to Friday. Day 1 is Banff town and Sulphur Mountain, day 2 the Bow Valley Parkway, Johnston Canyon and Lake Louise in the evening, day 3 Moraine Lake and the Lake Agnes Tea House, day 4 the Icefields Parkway to Jasper, and day 5 Maligne Lake and the night sky. Start on a Monday: Banff and Lake Louise fill with day-trippers from Calgary on weekends, and a Monday start puts the two busiest sights on a Tuesday and a Wednesday. Count a sixth morning for the drive out, which is 392 km to Edmonton or 420 km back to Calgary. More on the country is on the Canada page.