The drive from Sun Valley, ID to Lewiston, ID covers 378.5 miles and takes about 8h 30m behind the wheel.
It usually feels better as a 2-day road trip than as one long push.
The route leans on North Norris Avenue, US 95, State Highway 75 for much of the mileage,
and the overall profile is mixed drive.
The longest uninterrupted segment is about 76.4 miles on North Norris Avenue.
At current regular gas prices, budget about $59.98 one way before food or hotel costs.
Trip Pace
Best split across 2 days
Treat the return leg as its own travel day rather than an afterthought.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
189.2 miles from Sun Valley, ID
A natural place for your longest stop of the day
, about 4h 36m into the drive
.
Who Is This Route For?
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Mixed drive route profile with national parks nearby.
Drive Character
The drive from Sun Valley, ID to Lewiston, ID covers 378.5 miles and takes about 8h 30m, using a mix of highways and local roads.
Expect a mix of faster highway mileage and slower local approaches near the beginning or end.
There are about 21 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
North Norris Avenue is the longest continuous segment at about 76.4 miles.
How Hard Is This Drive?
This route mixes highway mileage with some local-road sections near the start or finish. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.1 miles in near Moritz Road.
Driving Effort4/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
The route itself is not hard, but at 8h 30m, endurance matters. Plan breaks every 2-3 hours. The 15 decision points are all manageable with basic attention.
Where does it get tricky?
The main spots that need attention: at 0.1 miles (Moritz Road): Navigation decision point; at 0.2 miles (ID 75 Spur / Sun Valley Road): Navigation decision point; at 1.3 miles (ID 75 / State Highway 75): Navigation decision point.
Critical Maneuvers
5 of 15 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
4
0.1 mi into trip|~0m in|Moritz Road
Turn left onto Moritz Road
Navigation decision point
4
0.2 mi into trip|~0m in|ID 75 Spur / Sun Valley Road
At end of road, turn left onto ID 75 Spur / Sun Valley Road
Navigation decision point
4
1.3 mi into trip|~3m in|ID 75 / State Highway 75
Turn right onto ID 75 / State Highway 75
Navigation decision point
7
308.6 mi into trip|~7h 6m in|US 95
At end of road, turn left onto US 95
Lane positioning matters here
Use the straight lane.
5
376.1 mi into trip|~8h 25m in|US 12
Keep slight left at fork onto US 12 toward Lewiston
Highway fork - watch signs carefully
Toward Lewiston
Main Roads
Road
Distance
Duration
North Norris Avenue
76.4 mi
1h 26m
US 95
67.5 mi
1h 18m
State Highway 75
60.1 mi
1h 29m
Main Street
45.6 mi
1h 1m
Banks Lowman Road
33.3 mi
58m
Ponderosa Pine Scenic Route
32.8 mi
44m
State Highway 21
24.4 mi
28m
Horseshoe Bend Road
18.4 mi
25m
Longest stretch:
North Norris Avenue
— 76.4 mi, about 1h 26m
Turn-by-Turn Driving Directions
Step-by-step road directions between Sun Valley, ID and Lewiston, ID.
1
Start on Inn Entry Lane
290 ft·13 sec·Inn Entry Lane
2
Turn left onto Moritz Road
0.2 mi·41 sec·Moritz Road
3
At end of road, turn left onto ID 75 Spur
0.5 mi·1 min·Sun Valley Road
4
Turn right onto Saddle Road
0.6 mi·1 min·Saddle Road
5
Turn right onto ID 75
60 mi·1 hr 29 min·State Highway 75
6
Turn left onto ID 21
1.0 mi·2 min·Eva Falls Avenue
7
Continue on ID 21
24 mi·28 min·State Highway 21
8
Continue on ID 21
33 mi·44 min·Ponderosa Pine Scenic Route
9
Turn right onto Banks Lowman Road
33 mi·58 min·Banks Lowman Road
10
Turn right onto ID 55
18 mi·25 min·Horseshoe Bend Road
11
Continue on ID 55
46 mi·1 hr 1 min·Main Street
12
Turn left onto Deinhard Lane
1.6 mi·2 min·Deinhard Lane
13
Continue on Boydstun Street
0.9 mi·1 min·Boydstun Street
14
At end of road, turn left onto ID 55
11 mi·16 min·West Lake Street
15
Turn right onto US 95
76 mi·1 hr 26 min·North Norris Avenue
16
Turn left onto Johnston Road
2.2 mi·5 min·Johnston Road
17
At end of road, turn left onto US 95
67 mi·1 hr 18 min·US 95
Use the straight lane.
18
Keep slight left at fork onto US 12
1.6 mi·3 min·US 12
Toward Lewiston
19
Turn right onto Idaho Street
0.8 mi·2 min·Idaho Street
20
Turn left
105 ft·7 sec
21
Arrive at destination
Trip Plan
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
This drive is better paced as a 2-day trip.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 189.2 miles from Sun Valley, ID, or about 4h 36m into the drive.
The longest continuous stretch on this route runs about 76.4 miles.
Consider an overnight stop or starting very early.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 83 miles or 1h 58m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 189.2 miles or 4h 36m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Overnight split
Day 1 wrap after about 189.2 miles or 4h 36m
Stop before fatigue turns the last few hours into a grind. You want day two to start fresh, not just resumed.
Final approach
Final hour starts around 7h 18m
Traffic, exits, and arrival timing usually matter more near Lewiston, ID than in the middle of the route.
Before You Leave
+
Open the route before leaving Sun Valley, ID so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
+
Treat this as a 2-day road trip and book the overnight stop before the busiest arrival window.
Day 1
Settle into the route from Sun Valley, ID
Aim for roughly 189 miles and 4.3 hours of wheel time on this day.
Day 2
Finish the approach into Lewiston, ID
Aim for roughly 189 miles and 4.3 hours of wheel time on this day.
Your first comfortable stop window is around 83 miles from Sun Valley, ID.
This route usually feels better as a 2-day drive than as one long push.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on North Norris Avenue for about 76.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 189.2 mi from Sun Valley, ID
· 4h 36m into the drive
Place data sourced from public business listings. Hours and availability may vary.
National Parks Near This Route
Worth a detour if your schedule allows.
Nez Perce National Historical Park
National Historical Park
Since time immemorial, the valleys, prairies, mountains, and plateaus of the inland northwest have been home to the nimíipuu (Nez Perce) people. Extremely resilient, they survived the settling of the...
20 mi from route
~49 min detour
Free
near mile 313.2
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$59.98 one way
$119.96 round trip
$4.03/gal25.4 MPG avg132 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$62.87
$125.74
premium
$4.53
$67.52
$135.04
diesel
$5.61
$83.57
$167.14
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$60
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$190–$300
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 132.4 kg one way.
Prices: EIA weekly data, 2026-04-13.
EV Charging Along Route
11 DC fast chargers
· Coverage: good
Winco Foods - Tesla Supercharger
Lewiston, ID
Tesla
12 DCFC
Albertsons - Tesla Supercharger
McCall, ID
Tesla
4 DCFC
Port of Clarkston
Clarkston, WA
EV Connect
4 DCFC
ROGERS CDJR L3A ROGERS DODGE PL
Lewiston, ID
ChargePoint Network
2 DCFC
Lancer Lanes & Casino Clarkston - ULTRA
Clarkston, WA
FLO
2 DCFC
MCCALL CHARGEPO MC CHARGE 1
McCall, ID
ChargePoint Network
1 DCFC
MCCALL CHARGEPO MC CHARGE 4
McCall, ID
ChargePoint Network
1 DCFC
MCCALL CHARGEPO MC CHARGE 3
McCall, ID
ChargePoint Network
1 DCFC
ChargePoint Network: 7
Tesla: 2
FLO: 1
EV Connect: 1
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $40 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
113.6
1
$39.74
$18.17
Efficient EV
94.6
1
$33.12
$15.14
EV Truck/SUV
151.4
1
$52.99
$24.22
Gas CO2
132 kg
EV CO2
44 kg (67% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Apr 18, 2026
Origin
Sun Valley, ID
Night
in Sun Valley on Friday
Local time
9:43 PM
MDT
Current temp
53°F
Unavailable
Live forecast
Destination
Lewiston, ID
Evening
in Lewiston on Friday
Local time
8:43 PM
PDT
Current temp
37°F
Partly Cloudy then Areas Of Frost
NE 5 mph1% chanceLive forecast
Freeze Warning
Freeze Warning issued April 17 at 1:16PM MDT until April 18 at 10:00AM MDT by NWS Pocatello ID
Freeze Warning
Freeze Warning issued April 17 at 1:16PM MDT until April 18 at 10:00AM MDT by NWS Pocatello ID
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
For long drives, weather on day two can matter just as much as conditions at departure, so check the whole travel window rather than only the first day.
Time zone
1 hour earlier
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
16 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
8h 30m on the road
This is long enough that the arrival forecast matters almost as much as departure conditions. Recheck both ends before you roll.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Sun Valley, ID to Lewiston, ID covers 378.5 miles and takes about 8h 30m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are North Norris Avenue, US 95, State Highway 75. Expect a mix of highway and local road driving.
Consider an overnight stop or starting very early.
Yes. This route is usually more comfortable as a 2-day drive. A sensible stopping point is after roughly 189 miles on day one.
The midpoint is about 189.2 miles from Sun Valley, ID. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $59.98 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
The route itself is not hard, but at 8h 30m, endurance matters. Plan breaks every 2-3 hours. The 15 decision points are all manageable with basic attention.
The main spots that need attention: at 0.1 miles (Moritz Road): Navigation decision point; at 0.2 miles (ID 75 Spur / Sun Valley Road): Navigation decision point; at 1.3 miles (ID 75 / State Highway 75): Navigation decision point.
The route from Sun Valley, ID to Lewiston, ID does not surface many named destination signs beyond the main corridor.
Yes. Nearby national parks include Nez Perce National Historical Park.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, NREL for EV charging, and NPS for national parks. See our methodology for refresh cadence and limitations.
