Post Falls to Paul is 610.1 miles and takes about 9h 59m via I 90, I 15, and I 86, with a fuel budget near $97 and enough daylight to finish in a day. This is a long-haul drive that stays within Idaho, connecting the Mountain West region to itself. Given the nearly 10-hour duration, you'll likely want to break this trip into two days. It's a straightforward, mostly highway route perfect for getting from point A to point B efficiently.
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
305.1 miles from Post Falls, ID
A natural place for your longest stop of the day
, about 5h 8m into the drive
.
Main Roads
Road
Distance
Duration
I 90
285.1 mi
4h 47m
I 15
244.3 mi
3h 49m
I 86
62.7 mi
59m
Vietnam Veterans Memorial Highway
12.4 mi
11m
South 600 West
2.2 mi
3m
North Spokane Street
0.4 mi
1m
South Main Street
0.3 mi
<1m
North Overland Avenue
0.2 mi
<1m
Longest stretch:
I 90
— 285.1 mi, about 4h 47m
Traffic on I-90
Hour-of-day weekday pattern from 58 FHWA count stations on your route.
Peak
4 PM
~981 veh/hr typical
· worst 1,230
Quietest
2 AM
~52 veh/hr
Peak-to-quiet ratio
18.9×
busier at peak than in the quiet hours
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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 Post Falls, ID and Paul, 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
244 mi·3 hr 49 min·I 15
7
Take the exit
0.6 mi·43 sec
Exit 72Toward I 86 West: Chubbuck, Twin Falls
8
Continue on I 86
63 mi·59 min·I 86
9
Continue on I 84; US 30
12 mi·11 min·Vietnam Veterans Memorial Highway
10
Take the exit
0.8 mi·1 min
Toward ID 27: Burley, Paul
11
Turn right onto I 84 Business; ID 27
0.2 mi·21 sec·North Overland Avenue
12
Continue on ID 27
2.2 mi·3 min·South 600 West
13
Continue on ID 27
0.3 mi·57 sec·South Main Street
14
Turn right onto East Idaho Street
56 ft·2 sec·East Idaho Street
15
Arrive at destination
East Idaho Street
Trip Plan
With a drive time of nearly 10 hours, this trip is best split over two days. Aim to leave early in the morning to maximize daylight, especially if you decide to tackle it in one go. Plan for about two stops to refuel and stretch your legs. The longest stretch is 285.1 miles on I 90, so be sure to note fuel availability before you hit that segment. Consider an overnight stay around the halfway point to make the drive more manageable.
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 305.1 miles from Post Falls, ID, or about 5h 8m 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 134 miles or 2h 16m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 305.1 miles or 5h 8m 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 305.1 miles or 5h 8m
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 59m
Traffic, exits, and arrival timing usually matter more near Paul, 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 305 miles and 5 hours of wheel time on this day.
Day 2
Finish the approach into Paul, ID
Aim for roughly 305 miles and 5 hours of wheel time on this day.
Your first comfortable stop window is around 134 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.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 8
5 decision points cluster between mile 0.2 and 610.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
0.2 mi into trip|~0m in|North Spokane Street
Turn right onto North Spokane Street
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
6
530.8 mi into trip|~8h 41m in
Take the exit toward I 86 West: Chubbuck, Twin Falls
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 72
Toward I 86 West: Chubbuck, Twin Falls
5
606.5 mi into trip|~9h 52m in
Take the exit toward ID 27: Burley, Paul
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward ID 27: Burley, Paul
4
610.1 mi into trip|~9h 59m in|East Idaho Street
Turn right onto East Idaho Street
Navigation decision point
Fuel & Cost
Regular Gas
$107.25 one way
$214.50 round trip
$4.47/gal25.4 MPG avg214 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.67
$112.15
$224.30
premium
$4.99
$119.86
$239.72
diesel
$5.35
$128.51
$257.01
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$107
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$237–$347
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 213.5 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $64 in charging
· 2 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
183
2
$64.06
$29.28
Efficient EV
152.5
1
$53.38
$24.40
EV Truck/SUV
244
3
$85.41
$39.05
Gas CO2
213 kg
EV CO2
71 kg (67% less)
Plan for 2 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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 Jun 1, 2026
Origin
Post Falls, ID
Afternoon
in Post Falls on Wednesday
Local time
12:11 PM
PDT
Current temp
49°F
Slight Chance Rain Showers
E 2 mph21% chanceLive forecast
Destination
Paul, ID
Afternoon
in Paul on Wednesday
Local time
1:11 PM
MDT
Current temp
40°F
Partly Cloudy
SSE 3 to 7 mph0% chanceLive 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
9 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 59m 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 is predominantly highway driving, with 97% of the 610.1 miles on major interstates. You'll encounter your longest uninterrupted stretch on I 90, covering 285.1 miles. The transition to surface roads will occur near the end of your trip. Expect a good deal of rural cruising for much of this drive.
97% highway — fuel and pacing are the main things to plan.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 285.1 mi on I 90.
How Hard Is This Drive?
4/10
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 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 59m, endurance matters. Plan breaks every 2-3 hours. The 8 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 286 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 530.8 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Elevation Profile
High-altitude sections with notable climbs
6,302 ft2,179 ft
Total Climb
4,532 ft
Total Descent
2,560 ft
Highest Point
6,302 ft
~392.2 mi in
Elevation Range
4,123 ft
Notable High Points
5,601 ft at ~305.1 miles+408 ft prominence
6,302 ft at ~392.2 miles+1,109 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Post Falls, ID and Paul, ID, road signs point toward Idaho Falls and Twin Falls.
The longest stretch is about 285.1 miles on I 90. 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 305 miles on day one.
Yes — we found about 30 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 is a long drive, so arriving tired and in the dark compounds. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Paul, 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 30 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 0.2 miles (North Spokane Street): Navigation decision point; at 286 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 530.8 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Not recommended in a single day. At 10.0 hours each way, a round trip means 20.0 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Paul, ID before the return drive.
