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Trip from Post Falls, ID to Challis, ID

Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards

Drive Time

7h 29m

Distance

371.2 mi

597 km

Drive Score

9/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$59

one way

EV Charging

Unknown

Best Time to Leave

Save up to 30 min
4 AM
7h 20m ★
6 AM
7h 30m
8 AM
7h 50m
10 AM
7h 37m
12 PM
7h 35m
3 PM
7h 38m
5 PM
7h 49m
8 PM
7h 24m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly
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Downtown Post Falls, ID, ID

Post Falls, ID

Daniil Komov

Trip Overview

The drive from Post Falls, ID to Challis, ID covers 371.2 miles and takes about 7h 29m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.

The route leans on I 90, US Highway 93 South, Salmon River Scenic Byway for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 169.2 miles on I 90. At current regular gas prices, budget about $58.82 one way before food or hotel costs.

Trip Pace

Same-day drive is realistic

A same-day return is possible, but it will make for a full day on the road.

Break Rhythm

2 planned breaks

Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.

Midpoint

185.6 miles from Post Falls, ID

A natural place for your longest stop of the day , about 3h 22m into the drive .

Who Is This Route For?

Weekend Trip

Doable as a same-day drive at 7h 29m. Total distance: 371.2 miles.

Family Friendly

Moderate complexity with 2 natural rest stops along the way.

Solo Traveler

7h 29m drive, plan rest stops for pacing.

First-Time Driver

Mostly highway driving (80%). Straightforward navigation.

Drive Character

This is a 7h 29m highway drive covering 371.2 miles, with most of the trip on I 90 and US Highway 93 South. The longest continuous stretch is about 169.2 miles on I 90.

Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 18 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 169.2 miles.

How Hard Is This Drive?

This is a straightforward highway drive that stays mostly on I 90 and US Highway 93 South. 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 7h 29m, endurance matters. Plan breaks every 2-3 hours. The 11 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 170.2 miles (I 90 Business; US 93): Exit ramp - move to the correct lane early; at 170.4 miles (I 90 Bus; US 93 / North Reserve Street): Lane positioning matters here.

Critical Maneuvers

5 of 11 key points

These 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

4
170.2 mi into trip | ~2h 59m in | I 90 Business; US 93

Take the exit onto I 90 Business; US 93 toward US 93 South: Hamilton

Exit ramp - move to the correct lane early

Toward US 93 South: Hamilton
5
170.4 mi into trip | ~2h 59m in | I 90 Bus; US 93 / North Reserve Street

Turn right onto I 90 Bus; US 93 / North Reserve Street

Lane positioning matters here

Use the straight lane.
5
175.8 mi into trip | ~3h 9m in | Brooks Street

Turn right onto Brooks Street

Lane positioning matters here

Use the right lane.
4
371.1 mi into trip | ~7h 29m in | South 7th Street

Turn left onto South 7th Street

Navigation decision point

Main Roads

Road Distance Duration
I 90 169.2 mi 2h 56m
US Highway 93 South 128.1 mi 2h 48m
Salmon River Scenic Byway 62.2 mi 1h 23m
North Reserve Street 5.3 mi 9m
Bitteroot Road 3 mi 3m
Main Street 1 mi 2m
Brooks Street 0.6 mi 1m
South Challis Street 0.4 mi <1m
Longest stretch: I 90 — 169.2 mi, about 2h 56m

Turn-by-Turn Driving Directions

Step-by-step road directions between Post Falls, ID and Challis, 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

169 mi · 2 hr 56 min · I 90
5

Take the exit onto I 90 Business; US 93

0.2 mi · 26 sec · I 90 Business; US 93
Toward US 93 South: Hamilton
6

Turn right onto I 90 Bus; US 93

5.3 mi · 9 min · North Reserve Street
Use the straight lane.
7

Turn right onto Brooks Street

0.6 mi · 1 min · Brooks Street
Use the right lane.
8

Continue on US 12; US 93

3.0 mi · 3 min · Bitteroot Road
Use the straight / right lanes.
9

Continue on US 12; US 93

128 mi · 2 hr 48 min · US Highway 93 South
10

Continue on US 93

4.5 mi · 6 min · Salmon River Scenic Byway
Use the straight / left lanes.
11

Turn left onto US 93

488 ft · 8 sec · Courthouse Drive
12

Continue on US 93

0.6 mi · 59 sec · Main Street
13

Turn right onto US 93

0.4 mi · 36 sec · South Challis Street
14

Continue on US 93

58 mi · 1 hr 16 min · Salmon River Scenic Byway
15

Turn right onto Main Street

0.4 mi · 1 min · Main Street
16

Turn left onto South 7th Street

326 ft · 19 sec · South 7th Street
17

Turn left

135 ft · 9 sec
18

Arrive at destination

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.

You can normally do this drive in one day.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 185.6 miles from Post Falls, ID, or about 3h 22m into the drive.
The longest continuous stretch on this route runs about 169.2 miles.

This is a comfortable same-day trip.

Departure

Before you leave

Start with fuel, water, and navigation already sorted so the first hour feels easy.

First stop

Around 82 miles or 1h 27m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 185.6 miles or 3h 22m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Final hour starts around 6h 8m

Traffic, exits, and arrival timing usually matter more near Challis, 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.

Day 1

Settle into the route from Post Falls, ID

This is one driving day of about 371.2 miles and 7h 29m.

Your first comfortable stop window is around 82 miles from Post Falls, ID.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on I 90 for about 169.2 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 185.6 mi from Post Falls, ID · 3h 22m into the drive

Downtown Hamilton, MT, MT

Mid-route town

Meal stop

Hamilton, MT

186 mi into the route

Best for: Lunch, fuel, and a longer reset

This sits close to the middle of the route, so it works well for the longest stop of the day.

Pacing Suggestions

Thompson Falls, MT

Fuel and coffee

A short stop after about 82 miles helps settle the day before fatigue starts building.

Missoula, MT

Meal break

The midpoint is around 185.6 miles from Post Falls, ID, which is a good place for a longer meal and fuel stop.

Before the longest stretch

Fuel check

Top up before I 90 if your tank is already low. That segment runs about 169.2 miles.

Arriving in Challis, ID

The final approach into Challis, 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 Challis, ID.

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

$58.82 one way

$117.64 round trip

$4.03/gal 25.4 MPG avg 130 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.22 $61.66 $123.31
premium $4.53 $66.22 $132.43
diesel $5.61 $81.96 $163.91

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$59

Meals

$25–$50

Total

$84–$109

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 129.9 kg one way. Prices: EIA weekly data, 2026-04-13.

Driving Electric?

About $39 in charging · 1 stop · 67% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 111.4 1 $38.98 $17.82
Efficient EV 92.8 1 $32.48 $14.85
EV Truck/SUV 148.5 1 $51.97 $23.76

Gas CO2

130 kg

EV CO2

43 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 17, 2026

Origin

Post Falls, ID

Morning in Post Falls on Saturday

Local time

6:36 AM

PDT

Current temp

30°F

Mostly Clear

SW 5 mph 0% chance Live forecast

Freeze Warning

Freeze Warning issued April 17 at 12:37AM MDT until April 17 at 10:00AM MDT by NWS Pocatello ID

Freeze Warning

Freeze Warning issued April 17 at 12:37AM MDT until April 18 at 10:00AM MDT by NWS Pocatello ID

Destination

Challis, ID

Morning in Challis on Saturday

Local time

7:36 AM

MDT

Current temp

20°F

Partly Cloudy

SW 2 mph 0% chance Live forecast

Freeze Warning

Freeze Warning issued April 17 at 12:37AM MDT until April 17 at 10:00AM MDT by NWS Pocatello ID

Freeze Warning

Freeze Warning issued April 17 at 12:37AM MDT until April 18 at 10:00AM MDT by NWS Pocatello ID

43°F

Hamilton, MT

186 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.

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

10 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

7h 29m on the road

Start early — leave by 6-7 AM to arrive at a reasonable hour.

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 Challis, ID covers 371.2 miles and takes about 7h 29m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are I 90, US Highway 93 South, Salmon River Scenic Byway. Most of the drive stays on highways, so watch for ramps and exits.

This is a comfortable same-day trip.

The midpoint is about 185.6 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 $58.82 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 7h 29m, endurance matters. Plan breaks every 2-3 hours. The 11 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 170.2 miles (I 90 Business; US 93): Exit ramp - move to the correct lane early; at 170.4 miles (I 90 Bus; US 93 / North Reserve Street): Lane positioning matters here.

The route from Post Falls, ID to Challis, ID does not surface many named destination signs beyond the main corridor.

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, and EIA for fuel prices. See our methodology for refresh cadence and limitations.

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