Coeur d'Alene, ID to American Falls, ID is 546 miles and takes about 8h 56m via I-90, I-15, and I-86, with a fuel budget near $89 and enough daylight to finish in a day if you start early, though 2 days is recommended. This long-haul drive stays within the Mountain West region, offering a full day of travel across Idaho. Given the duration, breaking this trip into two days is the most sensible approach for a comfortable pace. You'll be covering significant ground, so plan accordingly for a substantial drive.
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
273 miles from Coeur d'Alene, ID
A natural place for your longest stop of the day
, about 4h 36m into the drive
.
Main Roads
Road
Distance
Duration
I 90
275.3 mi
4h 36m
I 15
244.3 mi
3h 49m
I 86
21.8 mi
20m
Sherman Avenue
1.2 mi
1m
Pocatello Avenue
0.8 mi
1m
I 86 Business
0.7 mi
1m
North 7th Street
0.3 mi
<1m
Harrison Street
0.3 mi
<1m
Longest stretch:
I 90
— 275.3 mi, about 4h 36m
Traffic on I-90
Hour-of-day weekday pattern from 44 FHWA count stations on your route.
Peak
3 PM
~460 veh/hr typical
· worst 691
Quietest
2 AM
~35 veh/hr
Peak-to-quiet ratio
13.1×
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 Coeur d'Alene, ID and American Falls, ID.
1
Start on East Garden Avenue
0.2 mi·43 sec·East Garden Avenue
2
Turn right onto North 7th Street
0.3 mi·50 sec·North 7th Street
3
Turn left onto Sherman Avenue
1.2 mi·1 min·Sherman Avenue
4
Take the ramp onto I 90
275 mi·4 hr 36 min·I 90
Toward I 90 East
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
22 mi·20 min·I 86
9
Take the exit onto I 86 Business
0.7 mi·1 min·I 86 Business
Toward Aberdeen, American Falls
10
Continue on Pocatello Avenue
0.8 mi·1 min·Pocatello Avenue
11
Continue on Harrison Street
0.3 mi·29 sec·Harrison Street
12
Turn right onto Fort Hall Avenue
175 ft·13 sec·Fort Hall Avenue
13
Turn left
175 ft·12 sec
14
Arrive at destination
Trip Plan
For this 8-hour, 546-mile drive, consider starting your day early to maximize daylight, especially if attempting it in one day. However, with a recommended two-day pace and two planned stops, you can enjoy a more relaxed journey. Plan your overnight stay around the halfway point or slightly beyond the longest stretch on I-90. Keep an eye on your fuel gauge, as there will be extended periods with limited services between towns, particularly on the longer highway segments.
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 273 miles from Coeur d'Alene, ID, or about 4h 36m into the drive.
The longest continuous stretch on this route runs about 275.3 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 120 miles or 2h 2m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 273 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 273 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 57m
Traffic, exits, and arrival timing usually matter more near American Falls, ID than in the middle of the route.
Before You Leave
+
Open the route before leaving Coeur d'Alene, 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 Coeur d'Alene, ID
Aim for roughly 273 miles and 4.5 hours of wheel time on this day.
Day 2
Finish the approach into American Falls, ID
Aim for roughly 273 miles and 4.5 hours of wheel time on this day.
Your first comfortable stop window is around 120 miles from Coeur d'Alene, 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 275.3 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 9
5 decision points cluster between mile 0.2 and 545.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0.2 mi into trip|~0m in|North 7th Street
Turn right onto North 7th Street
Navigation decision point
5
276.9 mi into trip|~4h 40m 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
521.7 mi into trip|~8h 31m 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
544.1 mi into trip|~8h 52m in|I 86 Business
Take the exit onto I 86 Business toward Aberdeen, American Falls
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward Aberdeen, American Falls
5
545.9 mi into trip|~8h 56m in|Fort Hall Avenue
Turn right onto Fort Hall Avenue
Navigation decision point
Fuel & Cost
Regular Gas
$95.98 one way
$191.96 round trip
$4.47/gal25.4 MPG avg191 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.67
$100.37
$200.73
premium
$4.99
$107.27
$214.53
diesel
$5.35
$115.00
$230.01
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$96
Hotel (1n)
$80–$140
Meals
$50–$100
Total
$226–$336
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 191 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $57 in charging
· 2 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
163.8
2
$57.33
$26.21
Efficient EV
136.5
1
$47.78
$21.84
EV Truck/SUV
218.4
2
$76.44
$34.94
Gas CO2
191 kg
EV CO2
64 kg (66% 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
Coeur d'Alene, ID
Afternoon
in Coeur d'Alene on Wednesday
Local time
12:06 PM
PDT
Current temp
50°F
Slight Chance Rain Showers
NE 2 mph24% chanceLive forecast
Destination
American Falls, ID
Afternoon
in American Falls on Wednesday
Local time
1:06 PM
MDT
Current temp
41°F
Partly Cloudy
N 3 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
8h 56m 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?
You'll spend 99% of the 546 miles on major highways, so expect consistent cruising. The longest stretch without a significant break is 275.3 miles, primarily on I-90. This means you'll encounter long stretches of rural driving with fewer immediate services, so be sure to fuel up when you have the chance. The highway system makes for straightforward navigation for the vast majority of the trip.
99% highway — fuel and pacing are the main things to plan.
14 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 275.3 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 7th 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 8h 56m, 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 7th Street): Navigation decision point; at 276.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 521.7 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Elevation Profile
High-altitude sections with notable climbs
6,599 ft2,191 ft
Total Climb
4,857 ft
Total Descent
2,643 ft
Highest Point
6,599 ft
~390 mi in
Elevation Range
4,408 ft
Notable High Points
5,349 ft at ~273 miles+277 ft prominence
6,599 ft at ~390 miles+1,143 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 Coeur d'Alene, ID to American Falls, ID, road signs begin pointing toward Idaho Falls along the way.
Idaho Falls
276.9 mi in|~4h 40m
Detours Along the Way
Tagged by where each one fits in your drive — first break, midpoint, final stretch.
The longest stretch is about 275.3 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 273 miles on day one.
Yes — we found about 26 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 American 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 26 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 7th Street): Navigation decision point; at 276.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 521.7 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Not recommended in a single day. At 8.9 hours each way, a round trip means 17.9 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at American Falls, ID before the return drive.
