Origin
Post Falls, ID
Morning in Post Falls on Friday
Local time
6:33 AM
PDT
Current temp
45°F
Unavailable
Live forecast
Trip from Post Falls, ID to Tyhee, ID
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 17, 2026 · Editorial standards
Drive Time
8h 44m
Distance
532.3 mi
857 km
Drive Score
8/10
Great drive
Same Day?
2-day trip
Fuel Cost
$84
one way
EV Charging
Unknown
Best Time to Leave
4 AM
8h 37m
★
6 AM
8h 45m
8 AM
9h 0m
10 AM
8h 50m
12 PM
8h 49m
3 PM
8h 51m
5 PM
9h 0m
8 PM
8h 40m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Post Falls, ID
Daniil Komov
Tyhee, ID
Antoni Shkraba Studio
Trip Overview
The drive from Post Falls, ID to Tyhee, ID covers 532.3 miles and takes about 8h 44m behind the wheel. It usually feels better as a 2-day road trip than as one long push.
The route leans on I 90, I 15, New Day Parkway for much of the mileage, and the overall profile is long-distance drive. The longest uninterrupted segment is about 285.1 miles on I 90. At current regular gas prices, budget about $84.35 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
266.1 miles from Post Falls, ID
A natural place for your longest stop of the day , about 4h 30m into the drive .
Who Is This Route For?
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
8h 44m drive, plan rest stops for pacing.
First-Time Driver
Mostly highway driving (99%). Straightforward navigation.
Drive Character
At 532.3 miles and 8h 44m of driving, this is a route where fuel stops, weather, and timing matter more than any single turn. The main roads are I 90 and I 15.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 12 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 90 is the longest continuous segment at about 285.1 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 90 and I 15. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.2 miles in near North Spokane Street.
Driving Effort
4/10
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 44m, endurance matters. Plan breaks every 2-3 hours. The 9 decision points are all manageable with basic attention.
Where does it get tricky?
The main spots that need attention: at 0.2 miles (North Spokane Street): Navigation decision point; at 0.6 miles: Navigation decision point; at 286 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 9 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
4
0.2 mi into trip
|
~0m in
|
North Spokane Street
Turn right onto North Spokane Street
Navigation decision point
3
0.6 mi into trip
|
~1m in
Turn left
Navigation decision point
5
286 mi into trip
|
~4h 50m in
Take the exit toward I 15 South: Dillon, Idaho Falls
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 15 South: Dillon, Idaho Falls
5
529.8 mi into trip
|
~8h 40m in
|
New Day Parkway
Turn right onto New Day Parkway
Lane positioning matters here
Use the right lane.
4
531.1 mi into trip
|
~8h 42m in
|
US 91 / Yellowstone Avenue
Turn right onto US 91 / Yellowstone Avenue
Navigation decision point
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 Post Falls, ID to Tyhee, ID, road signs begin pointing toward Idaho Falls along the way.
Idaho Falls
286 mi in
|
~4h 50m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 90 | 285.1 mi | 4h 47m |
| I 15 | 243 mi | 3h 48m |
| New Day Parkway | 1.3 mi | 2m |
| North Yellowstone Highway | 0.6 mi | <1m |
| Yellowstone Avenue | 0.5 mi | <1m |
| North Spokane Street | 0.4 mi | 1m |
| West 10th Avenue | 0.2 mi | <1m |
| Cherry Lane | <0.1 mi | <1m |
Longest stretch:
I 90
— 285.1 mi, about 4h 47m
Turn-by-Turn Driving Directions
Step-by-step road directions between Post Falls, ID and Tyhee, ID.
1
Start on West 10th Avenue
0.2 mi
·
40 sec
·
West 10th Avenue
2
Turn right onto North Spokane Street
0.4 mi
·
1 min
·
North Spokane Street
3
Turn left
0.4 mi
·
51 sec
4
Merge onto I 90
285 mi
·
4 hr 47 min
·
I 90
5
Take the exit
0.5 mi
·
1 min
Toward I 15 South: Dillon, Idaho Falls
6
Merge onto I 15
243 mi
·
3 hr 48 min
·
I 15
7
Take the exit
0.3 mi
·
45 sec
8
Turn right onto New Day Parkway
1.3 mi
·
2 min
·
New Day Parkway
Use the right lane.
9
Turn right onto US 91
0.5 mi
·
44 sec
·
Yellowstone Avenue
10
Continue on US 91
0.6 mi
·
58 sec
·
North Yellowstone Highway
11
Turn right onto Cherry Lane
50 ft
·
2 sec
·
Cherry Lane
12
Arrive at destination
Cherry Lane
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 266.1 miles from Post Falls, ID, or about 4h 30m into the drive.
The longest continuous stretch on this route runs about 285.1 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 117 miles or 1h 59m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 266.1 miles or 4h 30m 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 266.1 miles or 4h 30m
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 46m
Traffic, exits, and arrival timing usually matter more near Tyhee, ID than in the middle of the route.
Before You Leave
+
Open the route before leaving Post Falls, 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 Post Falls, ID
Aim for roughly 266 miles and 4.4 hours of wheel time on this day.
Day 2
Finish the approach into Tyhee, ID
Aim for roughly 266 miles and 4.4 hours of wheel time on this day.
Your first comfortable stop window is around 117 miles from Post Falls, 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 I 90 for about 285.1 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 266.1 mi from Post Falls, ID · 4h 30m into the drive
First major stop
Coffee and fuel
176 mi into the route
Best for: Coffee, fuel, and an easy first stretch
This is a natural early stop once the first hours of the drive are behind you.
Second major stop
Overnight candidate
351 mi into the route
Best for: Hotel check-in, dinner, and a fresh start
This lines up well with a realistic day-end stop if you are breaking the drive into stages.
Find hotels in Deer Lodge, MTOvernight Options
Night 1
266 mi · about 4.4h in
A practical overnight split lands near Missoula, MT after about 266 miles or 4.4 hours of driving.
Find hotelsPacing Suggestions
Fuel and coffee
A short stop after about 117 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 266.1 miles from Post Falls, ID, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 90 if your tank is already low. That segment runs about 285.1 miles.
Overnight split
Hotel stopFor a steadier pace, wrap day one after about 266 miles or 4.4 hours on the road.
Arriving in Tyhee, ID
The final approach into Tyhee, ID usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Tyhee, ID.
On a multi-day trip, keep the last day a little lighter so you reach Tyhee, ID with some flexibility left in the schedule.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$84.35 one way
$168.70 round trip
$4.03/gal
25.4 MPG avg
186 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $88.42 | $176.83 |
| premium | $4.53 | $94.95 | $189.91 |
| diesel | $5.61 | $117.53 | $235.05 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$84
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$214–$324
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 186.2 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $56 in charging · 1 stop · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 159.7 | 1 | $55.89 | $25.55 |
| Efficient EV | 133.1 | 1 | $46.58 | $21.29 |
| EV Truck/SUV | 212.9 | 2 | $74.52 | $34.07 |
Gas CO2
186 kg
EV CO2
62 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.
Destination
Tyhee, ID
Morning in Tyhee on Friday
Local time
7:33 AM
MDT
Current temp
60°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 later
The destination clock does not match departure time, so double-check hotel check-in windows and late arrival plans.
Temperature spread
15 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
8h 44m 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 Post Falls, ID to Tyhee, ID covers 532.3 miles and takes about 8h 44m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 90, I 15, New Day Parkway. 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 266 miles on day one.
The midpoint is about 266.1 miles from Post Falls, ID. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $84.35 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 44m, endurance matters. Plan breaks every 2-3 hours. The 9 decision points are all manageable with basic attention.
The main spots that need attention: at 0.2 miles (North Spokane Street): Navigation decision point; at 0.6 miles: Navigation decision point; at 286 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
On the drive from Post Falls, ID to Tyhee, ID, road signs begin pointing toward Idaho Falls along the way.
How this page is built
Compiled and maintained by the Trip.ovh planning team at COD Solutions Oy (Helsinki). Each route is built from authoritative open government and mapping datasets rather than crowdsourced reviews. Distances and geometry come from OSRM over OpenStreetMap. Fuel cost uses EIA weekly regional averages. Pages are published only after passing our data-quality checks; our methodology page documents refresh cadence, editorial standards, and known limitations.
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