Spanning 304 miles across the Mountain West, the trek from Caldwell to Idaho Falls typically takes about 4 hours and 13 minutes of drive time. Because this is a manageable distance, you can easily complete the journey in a single day without needing an overnight stay. Expect to spend roughly $47 on fuel, though your actual costs may vary depending on your vehicle's efficiency. You will navigate via Cleveland Boulevard, South 10th Avenue, and the Vietnam Veterans Memorial Highway. Whether you are traveling for business or a change of scenery, this route is straightforward enough to handle in one go while leaving you plenty of time at your destination.
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
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
152 miles from Caldwell, ID
A natural place for your longest stop of the day
, about 2h 30m into the drive
.
Main Roads
Road
Distance
Duration
Vietnam Veterans Memorial Highway
193.2 mi
3h 6m
I 86
62.7 mi
59m
I 15 BUS
43.5 mi
41m
West Sunnyside Road
2.6 mi
3m
South 10th Avenue
0.7 mi
1m
Stonebrook Lane
<0.1 mi
<1m
West Stone Run Lane
<0.1 mi
<1m
Charleston Lane
<0.1 mi
<1m
Longest stretch:
Vietnam Veterans Memorial Highway
— 193.2 mi, about 3h 6m
Turn-by-Turn Driving Directions
Step-by-step road directions between Caldwell, ID and Idaho Falls, ID.
1
Start on this road
90 ft·11 sec·this road
2
Turn left onto I 84 Business
72 ft·4 sec·Cleveland Boulevard
3
Turn right
141 ft·12 sec
4
Turn right
150 ft·12 sec
5
Turn right onto South 10th Avenue
0.7 mi·1 min·South 10th Avenue
6
Take the ramp
0.5 mi·1 min
7
Merge onto I 84; US 20; US 26; US 30
21 mi·24 min·Vietnam Veterans Memorial Highway
Use the straight / slight right lanes.
8
Keep slight right at fork onto I 84; US 30
172 mi·2 hr 42 min·Vietnam Veterans Memorial Highway
Use the slight right lane.
9
Continue on I 86; US 30
63 mi·59 min·I 86; US 30
10
Keep slight left at fork
0.6 mi·40 sec
Toward Idaho Falls
11
Merge onto I 15 BUS
43 mi·40 min·I 15 BUS
12
Take the exit onto I 15 BUS; US 26
0.3 mi·35 sec·I 15 BUS; US 26
Toward I 15 Business, US 26: Ammon, Jackson
13
Turn right onto I 15 BUS; US 26
2.6 mi·3 min·West Sunnyside Road
14
Turn right onto Stonebrook Lane
466 ft·14 sec·Stonebrook Lane
15
Turn right onto West Stone Run Lane
241 ft·16 sec·West Stone Run Lane
16
Turn left onto Charleston Lane
152 ft·6 sec·Charleston Lane
17
Arrive at destination
Charleston Lane
Trip Plan
Since this is a one-stop journey, plan your single break strategically to break up the four-hour duration. Leaving early in the day is your best bet to avoid traffic buildup on the more localized sections of the route. Keep your $47 fuel budget in mind as you map out your stops, ensuring you have enough cushion for refueling at a convenient interval. Because the road is characterized by frequent turns, pay close attention to navigation cues rather than relying solely on cruise control. Maintaining a flexible schedule will help you navigate the turn-heavy segments comfortably and arrive in Idaho Falls refreshed.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 152 miles from Caldwell, ID, or about 2h 30m into the drive.
The longest continuous stretch on this route runs about 193.2 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 67 miles or 1h 9m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 152 miles or 2h 30m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 2m
Traffic, exits, and arrival timing usually matter more near Idaho Falls, ID than in the middle of the route.
Before You Leave
+
Open the route before leaving Caldwell, 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.
Day 1
Settle into the route from Caldwell, ID
This is one driving day of about 304 miles and 4h 55m.
Your first comfortable stop window is around 67 miles from Caldwell, ID.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on Vietnam Veterans Memorial Highway for about 193.2 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 13
5 decision points cluster between mile 0.1 and 301 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0.1 mi into trip|~0m in
Turn right
Navigation decision point
5
1.3 mi into trip|~3m in|I 84; US 20; US 26; US 30 / Vietnam Veterans Memorial Highway
Merge onto I 84; US 20; US 26; US 30 / Vietnam Veterans Memorial Highway
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
6
22.2 mi into trip|~27m in|I 84; US 30 / Vietnam Veterans Memorial Highway
Keep slight right at fork onto I 84; US 30 / Vietnam Veterans Memorial Highway
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
5
257.2 mi into trip|~4h 9m in
Keep slight left at fork toward Idaho Falls
Highway fork - watch signs carefully
Toward Idaho Falls
5
301 mi into trip|~4h 51m in|I 15 BUS; US 26
Take the exit onto I 15 BUS; US 26 toward I 15 Business, US 26: Ammon, Jackson
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 15 Business, US 26: Ammon, Jackson
Fuel & Cost
Regular Gas
$48.17 one way
$96.35 round trip
$4.03/gal25.4 MPG avg106 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.22
$50.50
$100.99
premium
$4.53
$54.23
$108.46
diesel
$5.61
$67.12
$134.24
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$48
Meals
$25–$50
Total
$73–$98
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 106.4 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $32 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
91.2
1
$31.92
$14.59
Efficient EV
76
0
$26.60
$12.16
EV Truck/SUV
121.6
1
$42.56
$19.46
Gas CO2
106 kg
EV CO2
36 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 Apr 15, 2026
Origin
Caldwell, ID
Evening
in Caldwell on Saturday
Local time
8:48 PM
MDT
Current temp
62°F
Unavailable
Live forecast
Destination
Idaho Falls, ID
Evening
in Idaho Falls on Saturday
Local time
8:48 PM
MDT
Current temp
63°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.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
1 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
4h 55m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Hagerman Fossil Beds National Monument
National Monument
During the Pliocene, this place looked quite different. Lush wetlands, forests, and grasslands provided excellent habitat for a variety of animals. From fascinating, now-extinct creatures like the sab...
8 mi from route
~20 min detour
Free
near mile 115.3
Caution: Use Caution with "Fossil Beds Information" Signs
Caution: If You Can't Reach Us By Phone, Please Email Us
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a turn-heavy local drive rather than a monotonous interstate cruise. The route features a 0% highway share, meaning you will be managing frequent turns rather than sustained high-speed travel. Because the longest uninterrupted stretch is 0 miles on Cleveland Boulevard, your focus remains consistently engaged as you navigate through the local road network. This profile creates a more technical driving experience than a standard freeway commute. Prepare for a steady pace as you transition between the various local thoroughfares that connect these two Idaho hubs.
35% highway, the rest on surface roads — varied driving throughout.
17 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 193.2 mi on Vietnam Veterans Memorial Highway.
How Hard Is This Drive?
5/10
This route mixes highway mileage with some local-road sections near the start or finish. You will hit about 13 points where you need to pay attention to lane position or signs. The trickiest moment comes around 0.1 miles in.
Driving Effort5/10
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 304 miles you will encounter 13 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 0.1 miles: Navigation decision point; at 1.3 miles (I 84; US 20; US 26; US 30 / Vietnam Veterans Memorial Highway): Merge point - match speed before joining. Lane positioning matters here; at 22.2 miles (I 84; US 30 / Vietnam Veterans Memorial Highway): Highway fork - watch signs carefully. Lane positioning matters here.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 55m. Total distance: 304 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 55m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (35%). Some complex stretches to watch for.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 193.2 miles on Vietnam Veterans Memorial Highway. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
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 0.1 miles: Navigation decision point; at 1.3 miles (I 84; US 20; US 26; US 30 / Vietnam Veterans Memorial Highway): Merge point - match speed before joining. Lane positioning matters here; at 22.2 miles (I 84; US 30 / Vietnam Veterans Memorial Highway): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Hagerman Fossil Beds National Monument. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.9 hours each way, an in-and-out day trip would put you behind the wheel for 9.9 hours — manageable with a long break at Idaho Falls, ID, but most travelers stay overnight.
