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Idaho: Boise, Stanley & the Sawtooths – Route Guide

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Sawtooth mountains Stanley — Idaho: Boise to the Sawtooths
Photo: Fredlyfish4 · CC BY-SA 4.0 · Wikimedia Commons

Follow Idaho 21 from Boise through the public history of Idaho City and the Ponderosa Pine Scenic Byway to Stanley, then cross the Sawtooth Scenic Byway to Ketchum and Sun Valley. Redfish Lake and signed public stops define the route; rafting, boats, hot springs, long hikes, lifts and guided activities are optional extras to arrange separately.

Idaho: Boise, Stanley & the Sawtooths is a 310 km one-way journey (self-drive). It works best as a 4-day trip; the plan below is the 4-day version for August, built from 125 verified places, with planned transit times, opening hours and daylight checked.

4
days
310km
distance
4
Stops
125
curated stops

View ready-made plans 4-day plan · best time to go

The route

Boise public culture day→ 65 kmPonderosa Pine byway public stops day→ 145 kmStanley and Redfish Lake public day→ 100 kmKetchum and Sun Valley public culture day

What you'll see

Julia Davis Park
Stroll through this Olmsted-esque park featuring gardens, a zoo, and river views.
Boise public culture day
Ponderosa Pine byway public-stops circuit
Use Idaho City public history and safe signed byway stops; continue only with Idaho 21 open and do not assume hot-spring, rafting or forest-road access.
Ponderosa Pine byway public stops day
Stanley and Redfish Lake public circuit
Use Stanley, Redfish Lake public day-use areas and short signed walks when open; boats, long wilderness hikes and providers remain optional.
Stanley and Redfish Lake public day
Sun Valley Museum of History
Explore the region's heritage from indigenous times to modern skiing.
Ketchum and Sun Valley public culture day
Boise Art Museum
Enjoy contemporary and western art in a beautifully curated museum.
Boise public culture day
Blaine County Historical Museum
Discover local history including mines and pioneer life.
Ketchum and Sun Valley public culture day
Idaho State Historical Museum
Journey through Idaho's history from prehistoric times to the present.
Boise public culture day
Ore Wagon Museum
See rare ore wagons from the town's mining era up close.
Ketchum and Sun Valley public culture day

Choose your length

4-day plan6 stops · 7.2 h transit1.5 stops/day · 1.8 h transit/daySee the full plan →

When to go

Best months: July, August, September

The Ponderosa Pine and Sawtooth scenic byways, Redfish Lake and public town stops form the baseline. Check Idaho 511, wildfire, smoke, forest restrictions, trail status and early snow; rafting, boats, hot springs, lifts and guided activities remain optional.

See the month-by-month breakdown →

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View ready-made plans