The Teton Crest Trail is the long backpacking route through Grand Teton country, from Phillips Pass, outside the park on the Teton Pass side, to String Lake, with more than 9,000 feet (2,743 m) of climbing. The park calls it a 39-mile (62.8 km) route from Phillips Pass to String Lake. The map line that the days below add up to starts at the pass itself and measures 35.7 miles (57.5 km), so it is about 3 miles (5 km) shorter than the park figure. The park does not publish a distance for the first stretch, and the walk up from the Highway 22 trailhead to the pass is not in our line, so use the park number for planning the full walk. The park calls it very popular and says its camping zones are full almost every night from late July to early September. It crosses Fox Creek Pass, Hurricane Pass and Paintbrush Divide and runs through Bridger-Teton and Caribou-Targhee national forests as well as the park.
This page walks it from south to north in 5 days and 4 nights, the same number of nights the park lists for its Granite Canyon to String Lake version (38.6 miles (62.1 km)). The park gives no day-by-day plan, so the split below is ours: the distances are measured along the map line from Phillips Pass, so treat them as a guide, and every night is in a park camping zone or camping area. You can start in three places: Phillips Pass (this page), the Granite Canyon trailhead if you want to stay inside the park, or the Jackson Hole aerial tram, which the park says saves about 4 miles (6.4 km) and 2,400 feet (730 m). The park also lists a Death Canyon to Paintbrush Canyon version at 37.1 miles (59.7 km) for 3 to 4 nights.
Two decisions matter, and they pull against each other. The first is when you go: before August the passes hold snow that needs an ice axe and crampons, while the zones are full almost every night from late July to early September. The second is how you get the permit, because this itinerary needs four different zones on four consecutive nights. About a third of permits can be reserved on opening day, and about two thirds go to walk-up in person the day before the start, where the park says the odds are high only if you are flexible. If the exact route matters, reserve on opening day. If it does not, plan to walk up and take what the ranger can build.