Ammon to Weiser is 354.3 miles and takes about 5h 53m via Vietnam Veterans Memorial Highway and I 86, with a fuel budget near $63 and enough daylight to finish in a day. This trip stays within Idaho, traveling from the Mountain West region to the Mountain West region. The profile suggests you'll spend most of your time on surface roads, with a smaller portion on highways. Given the relatively short duration and modest mileage, this drive is well-suited for a single-day adventure if you get an early start. Plan for a straightforward drive across the state.
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
177.2 miles from Ammon, ID
A natural place for your longest stop of the day
, about 2h 53m into the drive
.
Main Roads
Road
Distance
Duration
Vietnam Veterans Memorial Highway
222.3 mi
3h 34m
I 86
62.7 mi
59m
Veterans Memorial Highway
43.1 mi
40m
South 16th Street
14.9 mi
19m
East Sunnyside Road
6.1 mi
9m
North Whitley Drive
2.1 mi
3m
East Idaho Avenue
0.6 mi
<1m
Northwest 16th Street
0.6 mi
<1m
Longest stretch:
Vietnam Veterans Memorial Highway
— 222.3 mi, about 3h 34m
Traffic on I-84
Hour-of-day weekday pattern from 185 FHWA count stations on your route.
Peak
4 PM
~2,568 veh/hr typical
· worst 2,958
Quietest
2 AM
~163 veh/hr
Peak-to-quiet ratio
15.8×
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 Ammon, ID and Weiser, ID.
1
Start on Molen Street
135 ft·11 sec·Molen Street
2
Turn left onto Central Avenue
0.1 mi·35 sec·Central Avenue
3
Turn right onto East Sunnyside Road
6.1 mi·9 min·East Sunnyside Road
4
Take the exit onto I 15 BUS; US 26
0.2 mi·31 sec·I 15 BUS; US 26
Toward Blackfook, Pocatello, Salt Lake City
5
Merge onto I 15; US 26
43 mi·40 min·Veterans Memorial Highway
6
Take the exit
0.6 mi·43 sec
Exit 72Toward I 86 West: Chubbuck, Twin Falls
7
Continue on I 86
63 mi·59 min·I 86
8
Continue on I 84; US 30
222 mi·3 hr 34 min·Vietnam Veterans Memorial Highway
Use the straight / slight right lanes.
9
Take the exit
0.3 mi·34 sec
Toward US 30 East: Fruitland, Payette
10
Turn right onto US 30
0.6 mi·52 sec·East Idaho Avenue
11
Continue on US 30
0.6 mi·54 sec·Northwest 16th Street
12
Turn left onto US 95
2.1 mi·3 min·North Whitley Drive
13
Turn slight right onto US 95
15 mi·19 min·South 16th Street
14
Turn left onto East Park Street
0.5 mi·1 min·East Park Street
15
At end of road, turn right onto State Street
0.1 mi·30 sec·State Street
16
Turn left onto West Butterfield Avenue
182 ft·13 sec·West Butterfield Avenue
17
Turn left
118 ft·8 sec
18
Arrive at destination
Trip Plan
Starting your 354.3-mile drive from Ammon early in the morning will give you ample time to reach Weiser before sunset. With a driving duration of under 6 hours, you can comfortably complete this trip in one day. The fuel cost is estimated at $63, so ensure your tank is full before departing Ammon. Since the majority of the route is on surface roads, be prepared for potential delays due to traffic signals or slower-moving vehicles, especially as you get closer to towns. Consider a brief stop around the halfway mark to stretch your legs and refuel if needed.
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 177.2 miles from Ammon, ID, or about 2h 53m into the drive.
The longest continuous stretch on this route runs about 222.3 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 78 miles or 1h 18m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 177.2 miles or 2h 53m 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 46m
Traffic, exits, and arrival timing usually matter more near Weiser, ID than in the middle of the route.
Before You Leave
+
Open the route before leaving Ammon, 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 Ammon, ID
This is one driving day of about 354.3 miles and 5h 53m.
Your first comfortable stop window is around 78 miles from Ammon, 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 222.3 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 11
5 decision points cluster between mile 0 and 354.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0 mi into trip|~0m in|Central Avenue
Turn left onto Central Avenue
Navigation decision point
6
6.2 mi into trip|~9m in|I 15 BUS; US 26
Take the exit onto I 15 BUS; US 26 toward Blackfook, Pocatello, Salt Lake City
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward Blackfook, Pocatello, Salt Lake City
6
49.5 mi into trip|~51m 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
335.2 mi into trip|~5h 26m in
Take the exit toward US 30 East: Fruitland, Payette
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 30 East: Fruitland, Payette
5
354.3 mi into trip|~5h 53m in
Turn left
Navigation decision point
Fuel & Cost
Regular Gas
$62.28 one way
$124.56 round trip
$4.47/gal25.4 MPG avg124 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.67
$65.13
$130.25
premium
$4.99
$69.60
$139.21
diesel
$5.35
$74.63
$149.25
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$62
Meals
$25–$50
Total
$87–$112
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 124 kg one way.
Prices: EIA weekly data, 2026-06-01.
Driving Electric?
About $37 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
106.3
1
$37.20
$17.01
Efficient EV
88.6
1
$31.00
$14.17
EV Truck/SUV
141.7
1
$49.60
$22.68
Gas CO2
124 kg
EV CO2
41 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 Jun 1, 2026
Origin
Ammon, ID
Afternoon
in Ammon on Wednesday
Local time
1:11 PM
MDT
Current temp
38°F
Partly Cloudy
ENE 2 mph0% chanceLive forecast
Destination
Weiser, ID
Afternoon
in Weiser on Wednesday
Local time
1:11 PM
MDT
Current temp
46°F
Mostly Clear
NW 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.
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
8 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
5h 53m 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 183.3
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?
You'll be on surface roads for most of this 354.3-mile drive. Highways make up 18% of the route, meaning you'll encounter more varied speed limits and intersections. The longest continuous stretch on a highway is 222.3 miles on Vietnam Veterans Memorial Highway. Expect to transition from highway cruising to more frequent stops and starts as you move onto surface roads for the majority of your travel.
Only 18% highway — the rest is turn-by-turn surface driving.
18 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 222.3 mi on Vietnam Veterans Memorial Highway.
How Hard Is This Drive?
3/10
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way. The trickiest moment comes early in the drive near Central Avenue.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 5h 53m drive. You will face about 11 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: near the start (Central Avenue): Navigation decision point; at 6.2 miles (I 15 BUS; US 26): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 49.5 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Elevation Profile
Gently rolling terrain
4,717 ft2,130 ft
Total Climb
198 ft
Total Descent
2,785 ft
Highest Point
4,717 ft
Elevation Range
2,587 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Ammon, ID and Weiser, ID, road signs point toward Twin Falls and Payette.
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 222.3 miles on Vietnam Veterans Memorial Highway. The full list of main roads is in the Roads section above.
Yes — we found about 27 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.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 27 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: near the start (Central Avenue): Navigation decision point; at 6.2 miles (I 15 BUS; US 26): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 49.5 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Yes — Hagerman Fossil Beds National Monument. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.9 hours each way, a round trip means 11.8 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Weiser, ID before the return drive.
