The drive from Sun Valley, ID to Post Falls, ID covers 445.3 miles and takes about 9h 48m behind the wheel.
It usually feels better as a 2-day road trip than as one long push.
The route leans on US 93, Jeannette Rankin Memorial Highway, Trail Creek Road for much of the mileage,
and the overall profile is mixed drive.
The longest uninterrupted segment is about 227.9 miles on US 93.
At current regular gas prices, budget about $70.56 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
222.6 miles from Sun Valley, ID
A natural place for your longest stop of the day
, about 5h 34m 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 Post Falls, ID covers 445.3 miles and takes about 9h 48m, 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 17 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
US 93 is the longest continuous segment at about 227.9 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 9h 48m, endurance matters. Plan breaks every 2-3 hours. The 12 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 40.4 miles (US 93): Navigation decision point.
Critical Maneuvers
5 of 12 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
5
0.2 mi into trip|~0m in|ID 75 Spur / Sun Valley Road
At end of road, turn right onto ID 75 Spur / Sun Valley Road
Navigation decision point
4
40.4 mi into trip|~1h 38m in|US 93
Turn left onto US 93
Navigation decision point
5
269.5 mi into trip|~6h 37m in|South Reserve Street
Turn left onto South Reserve Street
Lane positioning matters here
Use the straight lane.
5
274.9 mi into trip|~6h 46m in|I 90 Business; US 93
Turn left onto I 90 Business; US 93 toward I 90 West, US 93 North, MT 200 West: Kalispell, Coeur D' Alene
Multiple destination signs - pick the right one
Toward I 90 West, US 93 North, MT 200 West: Kal...
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Sun Valley, ID to Post Falls, ID, road signs begin pointing toward Coeur D' Alene along the way.
Coeur D' Alene
274.9 mi in|~6h 46m|via I 90 Business; US 93
Main Roads
Road
Distance
Duration
US 93
227.9 mi
4h 56m
Jeannette Rankin Memorial Highway
169.2 mi
2h 58m
Trail Creek Road
36.3 mi
1h 27m
South Reserve Street
5.4 mi
9m
Old Chilly Road
2.7 mi
6m
Sun Valley Road
0.9 mi
2m
Main Street
0.7 mi
1m
Brooks Street
0.6 mi
1m
Longest stretch:
US 93
— 227.9 mi, about 4h 56m
Turn-by-Turn Driving Directions
Step-by-step road directions between Sun Valley, ID and Post Falls, ID.
1
Start on Inn Entry Lane
290 ft·13 sec·Inn Entry Lane
2
Turn left onto Moritz Road
0.2 mi·39 sec·Moritz Road
3
At end of road, turn right onto ID 75 Spur
0.9 mi·2 min·Sun Valley Road
4
Continue on ID 75 Spur; FR 51
36 mi·1 hr 27 min·Trail Creek Road
5
Turn left onto Old Chilly Road
2.7 mi·6 min·Old Chilly Road
6
Continue on this road
0.3 mi·47 sec·this road
7
Turn left onto US 93
92 mi·1 hr 57 min·US 93
8
Turn left onto US 93
0.7 mi·1 min·Main Street
9
Turn slight right onto US 93
136 mi·2 hr 59 min·US 93
Toward US 93: MissoulaUse the straight lane.
10
Continue on Brooks Street
0.6 mi·1 min·Brooks Street
Use the straight / right lanes.
11
Turn left onto South Reserve Street
5.4 mi·9 min·South Reserve Street
Use the straight lane.
12
Turn left onto I 90 Business; US 93
0.3 mi·44 sec·I 90 Business; US 93
Toward I 90 West, US 93 North, MT 200 West: Kalispell, Coeur D' Alene
13
Merge onto I 90; US 93; MT 200
169 mi·2 hr 58 min·Jeannette Rankin Memorial Highway
14
Take the exit
0.4 mi·50 sec
Toward Spokane Street
15
Turn right onto I 90 Bus
0.3 mi·1 min·North Spokane Street
16
Turn left onto West 10th Avenue
0.2 mi·38 sec·West 10th Avenue
17
Arrive at destination
West 10th Avenue
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 222.6 miles from Sun Valley, ID, or about 5h 34m into the drive.
The longest continuous stretch on this route runs about 227.9 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 98 miles or 2h 51m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 222.6 miles or 5h 34m 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 222.6 miles or 5h 34m
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 8h 43m
Traffic, exits, and arrival timing usually matter more near Post Falls, 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 223 miles and 4.9 hours of wheel time on this day.
Day 2
Finish the approach into Post Falls, ID
Aim for roughly 223 miles and 4.9 hours of wheel time on this day.
Your first comfortable stop window is around 98 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 US 93 for about 227.9 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 222.6 mi from Sun Valley, ID
· 5h 34m into the drive
Place data sourced from public business listings. Hours and availability may vary.
Fuel & Cost
Regular Gas
$70.56 one way
$141.13 round trip
$4.03/gal25.4 MPG avg156 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$73.97
$147.93
premium
$4.53
$79.44
$158.87
diesel
$5.61
$98.32
$196.63
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$71
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$201–$311
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 155.8 kg one way.
Prices: EIA weekly data, 2026-04-13.
EV Charging Along Route
5 DC fast chargers
· Coverage: fair
Blink Charging Station
Ketchum, Idaho
Blink
1 DCFC
Flying J EV Charging Station
Post Falls, Idaho
Other
1 DCFC
Tesla Destination Charger
Sun Valley, Idaho
Tesla Destination
1 DCFC
EV Connect Charging Station
Post Falls, Idaho
EV Connect
1 DCFC
EvGateway Charging Station
Hamilton, Montana
Other
1 DCFC
Other: 2
Blink: 1
Tesla Destination: 1
EV Connect: 1
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $47 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
133.6
1
$46.76
$21.37
Efficient EV
111.3
1
$38.96
$17.81
EV Truck/SUV
178.1
2
$62.34
$28.50
Gas CO2
156 kg
EV CO2
52 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 15, 2026
Origin
Sun Valley, ID
Late night
in Sun Valley on Saturday
Local time
4:51 AM
MDT
Current temp
53°F
Unavailable
Live forecast
Destination
Post Falls, ID
Late night
in Post Falls on Saturday
Local time
3:51 AM
PDT
Current temp
45°F
Unavailable
Live forecast
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
8 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
9h 48m 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 Post Falls, ID covers 445.3 miles and takes about 9h 48m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are US 93, Jeannette Rankin Memorial Highway, Trail Creek Road. 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 223 miles on day one.
The midpoint is about 222.6 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 $70.56 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 9h 48m, endurance matters. Plan breaks every 2-3 hours. The 12 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 40.4 miles (US 93): Navigation decision point.
On the drive from Sun Valley, ID to Post Falls, ID, road signs begin pointing toward Coeur D' Alene along the way.
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.
