Persons inexperienced in mountain climbing are requested to obtain the
services of a mountain-climbing guide, or attempt climbs only when
accompanied by experienced climbers. Since 1931, authorized
non-Government guide service has been available in the park. In view of
the difficulties one encounters on the Teton peaks and the hazards they
present, all prospective climbers are urged to make use of the guide
service. If venturing out unguided, climbers should consult rangers or
guides for full information relating to routes and equipment. Failure to
heed this caution has led to accidents and even fatalities. Climbing
parties are required, under all circumstances, to report at either park
headquarters or Jenny Lake Museum before and after each expedition,
whether guided or unguided. CLIMBING ALONE, WITHOUT A COMPANION, IS NOT
PERMITTED.
The climbing season varies with the weather and the amount of snow in
the range; it is at its best during July, August, and early September.
In most cases it is advisable to allow 2 days for an ascent of Grand
Teton, Mount Moran, or Mount Owen and 1 day for other major peaks. Jenny
Lake Campground is the logical outfitting point for most expeditions.
The majority of ascents require ice axes, rope, and hobbed boots or
climbing shoes. Guided parties may arrange to rent equipment from the
guide.