Spanning 500.7 miles through the rugged Mountain West, this journey from Hailey to Post Falls is a significant undertaking that requires careful planning. With an estimated travel time of 9 hours and 26 minutes, you should definitely treat this as a multi-day excursion rather than a single-day push. Budgeting approximately $77 for fuel is a smart starting point for your logistics. Since the route avoids high-speed interstates, you will need to account for a slower pace as you traverse the Idaho landscape. Splitting the drive over two recommended days will help you manage the long hours behind the wheel effectively. Ultimately, this trip is best suited for travelers who prefer a steady, deliberate pace across the state.
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
229.2 miles from Hailey, ID
A natural place for your longest stop of the day
, about 5h 46m into the drive
.
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 Main Street
11.8 mi
17m
South Reserve Street
5.4 mi
9m
Old Chilly Road
2.7 mi
6m
East Sun Valley Road
2.4 mi
5m
Main Street
0.7 mi
1m
Longest stretch:
US 93
— 227.9 mi, about 4h 56m
Traffic on I-90
Hour-of-day weekday pattern from 54 FHWA count stations on your route.
Peak
4 PM
~1,051 veh/hr typical
· worst 1,322
Quietest
2 AM
~54 veh/hr
Peak-to-quiet ratio
19.5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Hailey, ID and Post Falls, ID.
1
Start on ID 75
12 mi·17 min·South Main Street
2
Turn right onto ID 75 Spur
2.4 mi·5 min·East Sun Valley Road
3
Continue on ID 75 Spur; FR 51
36 mi·1 hr 27 min·Trail Creek Road
4
Turn left onto Old Chilly Road
2.7 mi·6 min·Old Chilly Road
5
Continue on this road
0.3 mi·47 sec·this road
6
Turn left onto US 93
92 mi·1 hr 57 min·US 93
7
Turn left onto US 93
0.7 mi·1 min·Main Street
8
Turn slight right onto US 93
136 mi·2 hr 59 min·US 93
Toward US 93: MissoulaUse the straight lane.
9
Continue on Brooks Street
0.6 mi·1 min·Brooks Street
Use the straight / right lanes.
10
Turn left onto South Reserve Street
5.4 mi·9 min·South Reserve Street
Use the straight lane.
11
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
12
Merge onto I 90; US 93; MT 200
169 mi·2 hr 58 min·Jeannette Rankin Memorial Highway
13
Take the exit
0.4 mi·50 sec
Toward Spokane Street
14
Turn right onto I 90 Bus
0.3 mi·1 min·North Spokane Street
15
Turn left onto West 10th Avenue
0.2 mi·38 sec·West 10th Avenue
16
Arrive at destination
West 10th Avenue
Trip Plan
To tackle this 9-hour and 26-minute trek comfortably, plan for at least two strategic stops along the way to break up the monotony. Given the nature of the roads, departing early in the morning is essential to ensure you are not navigating local, non-highway roads after dark. Since the route relies entirely on local roads rather than high-speed highways, keep a close watch on your fuel levels, as service stations may be less frequent than on major interstates. Use your $77 fuel budget as a baseline, but keep a small buffer for unexpected detours or idling. Prioritizing a steady, two-day pace will keep you fresh and allow you to navigate the specific challenges of Trail Creek and Old Chilly roads with confidence.
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 229.2 miles from Hailey, ID, or about 5h 46m 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 101 miles or 2h 59m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 229.2 miles or 5h 46m 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 229.2 miles or 5h 46m
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 9h 3m
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 Hailey, 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 Hailey, ID
Aim for roughly 229 miles and 5.1 hours of wheel time on this day.
Day 2
Finish the approach into Post Falls, ID
Aim for roughly 229 miles and 5.1 hours of wheel time on this day.
Your first comfortable stop window is around 101 miles from Hailey, 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.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 11
5 decision points cluster between mile 11.8 and 288 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
11.8 mi into trip|~17m in|ID 75 Spur / East Sun Valley Road
Turn right onto ID 75 Spur / East Sun Valley Road
Navigation decision point
4
53.5 mi into trip|~1h 58m in|US 93
Turn left onto US 93
Navigation decision point
4
146.4 mi into trip|~3h 56m in|US 93
Turn slight right onto US 93 toward US 93: Missoula
Lane positioning matters here
Use the straight lane.
Toward US 93: Missoula
5
282.6 mi into trip|~6h 57m in|South Reserve Street
Turn left onto South Reserve Street
Lane positioning matters here
Use the straight lane.
5
288 mi into trip|~7h 7m 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...
Fuel & Cost
Regular Gas
$71.45 one way
$142.90 round trip
$3.96/gal25.4 MPG avg160 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.17
$75.31
$150.62
premium
$4.47
$80.74
$161.49
diesel
$4.80
$86.55
$173.11
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: 160.4 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $48 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
137.5
1
$48.13
$22.00
Efficient EV
114.6
1
$40.11
$18.34
EV Truck/SUV
183.4
2
$64.18
$29.34
Gas CO2
160 kg
EV CO2
54 kg (66% 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 Jul 17, 2026
Origin
Hailey, ID
Late night
in Hailey on Sunday
Local time
2:19 AM
MDT
Current temp
88°F
Chance Showers And Thunderstorms
S 7 mph26% chanceLive forecast
Severe Thunderstorm Warning
Severe Thunderstorm Warning issued July 16 at 5:00PM PDT until July 16 at 5:15PM PDT by NWS Spokane WA
Special Weather Statement
Special Weather Statement issued July 16 at 5:43PM MDT by NWS Boise ID
Destination
Post Falls, ID
Late night
in Post Falls on Sunday
Local time
1:19 AM
PDT
Current temp
100°F
Slight Chance Showers And Thunderstorms
E 3 mph29% chanceLive forecast
Severe Thunderstorm Warning
Severe Thunderstorm Warning issued July 16 at 5:00PM PDT until July 16 at 5:15PM PDT by NWS Spokane WA
Special Weather Statement
Special Weather Statement issued July 16 at 5:43PM MDT by NWS Boise ID
92°F
Hamilton, MT
229 mi in
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
12 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
10h 8m 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.
More Details
What kind of drive is this?
This route offers a distinct departure from standard interstate travel, as it features a 0% highway share. Instead, you will navigate local and regional paths like East Sun Valley Road, Trail Creek Road, and Old Chilly Road. Because there are no long, uninterrupted interstate stretches, the driving experience remains consistently hands-on and technical. You should prepare for a winding, road-focused journey that demands your full attention throughout the entire 500.7-mile distance. The character of this drive is defined by its intimacy with the local terrain, offering a stark contrast to the monotonous, high-speed grinds typically found on major US corridors.
50% highway, the rest on surface roads — varied driving throughout.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 227.9 mi on US 93.
How Hard Is This Drive?
6/10
This route mixes highway mileage with some local-road sections near the start or finish. You will hit about 11 points where you need to pay attention to lane position or signs. The trickiest moment comes around 11.8 miles in near ID 75 Spur / East Sun Valley Road.
Driving Effort6/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 458.4 miles you will encounter 11 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 11.8 miles (ID 75 Spur / East Sun Valley Road): Navigation decision point; at 53.5 miles (US 93): Navigation decision point; at 146.4 miles (US 93): Lane positioning matters here.
Elevation Profile
High-altitude sections with notable climbs
7,015 ft2,150 ft
Total Climb
4,655 ft
Total Descent
7,801 ft
Highest Point
7,015 ft
~32.7 mi in
Elevation Range
4,865 ft
Notable High Points
7,015 ft at ~32.7 miles+207 ft prominence
5,779 ft at ~196.4 miles+1,995 ft prominence
3,580 ft at ~392.9 miles+822 ft prominence
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 Hailey, ID to Post Falls, ID, road signs begin pointing toward Coeur D' Alene along the way.
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
10h 8m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 227.9 miles on US 93. The full list of main roads is in the Roads section above.
Yes — a 2-day pace is more comfortable than one long haul. A sensible stopping point is after roughly 229 miles on day one.
Yes — we found about 13 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Post Falls, ID before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 2 meaningful breaks. There are 13 rest areas along the route for bathroom stops.
Mostly yes along the main roads, but rural stretches through ID can have sparse or no coverage. Before you leave, download offline Google Maps or Apple Maps for the route, and consider downloading music or podcasts instead of streaming. If you depend on data for navigation, keep a paper backup of the turn-by-turn directions.
The main spots that need attention: at 11.8 miles (ID 75 Spur / East Sun Valley Road): Navigation decision point; at 53.5 miles (US 93): Navigation decision point; at 146.4 miles (US 93): Lane positioning matters here.
Not recommended in a single day. At 10.1 hours each way, a round trip means 20.3 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Post Falls, ID before the return drive.
