This 307.3-mile drive from Boise to Rexburg, Idaho, is a solid day trip, easily completed in about 5 hours. You'll navigate a mix of highways, with 36% of the journey on interstates, making for a relatively straightforward journey through the Mountain West region. With an estimated fuel cost of $49, it's an affordable option for a quick hop across the state. Plan for one main stop to break up the drive. This route offers a practical way to travel between these two Idaho cities without needing an overnight stay.
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
153.6 miles from Boise, ID
A natural place for your longest stop of the day
, about 2h 29m into the drive
.
Main Roads
Road
Distance
Duration
Vietnam Veterans Memorial Highway
166.5 mi
2h 36m
I 86
62.7 mi
59m
I 15 BUS
46.3 mi
43m
Idaho Medal of Honor Highway
15.8 mi
17m
Yellowstone Highway
7 mi
7m
Rigby Highway
3.1 mi
3m
South Broadway Avenue
2.8 mi
5m
West Main Street
1 mi
2m
Longest stretch:
Vietnam Veterans Memorial Highway
— 166.5 mi, about 2h 36m
Traffic on I-84
Hour-of-day weekday pattern from 62 FHWA count stations on your route.
Peak
4 PM
~1,309 veh/hr typical
· worst 1,626
Quietest
2 AM
~114 veh/hr
Peak-to-quiet ratio
11.5×
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 Boise, ID and Rexburg, ID.
1
Start on this road
118 ft·10 sec·this road
2
Turn right
263 ft·21 sec
3
Turn right onto South 6th Street
0.2 mi·38 sec·South 6th Street
4
Turn left onto US 20; US 26
0.6 mi·1 min·West Myrtle Street
5
Turn right onto US 20; US 26
2.8 mi·5 min·South Broadway Avenue
6
Take the ramp onto US 20; US 26
0.4 mi·46 sec·Idaho Medal of Honor Highway
Toward I 84 EastUse the left lane.
7
Continue on I 84; US 20; US 26; US 30
166 mi·2 hr 36 min·Vietnam Veterans Memorial Highway
Use the straight / slight right lanes.
8
Continue on I 86; US 30
63 mi·59 min·I 86; US 30
9
Keep slight left at fork
0.6 mi·40 sec
Toward Idaho Falls
10
Merge onto I 15 BUS
46 mi·43 min·I 15 BUS
11
Take the exit onto US 20
0.3 mi·35 sec·US 20
Exit 119Toward US 20 East, I 15: Rigby, West Yellowstone
12
Continue on US 20
3.1 mi·3 min·Rigby Highway
Use the right lane.
13
Continue on US 20
15 mi·16 min·Idaho Medal of Honor Highway
14
Continue on US 20
7.0 mi·7 min·Yellowstone Highway
15
Take the exit
0.3 mi·34 sec
Toward ID 33: Salmon, Rexburg
16
Keep slight right at fork
301 ft·9 sec
Toward ID 33: Salmon, Rexburg
17
Turn straight onto ID 33
1.0 mi·2 min·West Main Street
18
Arrive at destination
ID 33
Trip Plan
Given the 5-hour duration, leaving Boise in the morning allows you to reach Rexburg with plenty of daylight remaining. While the route data suggests one stop, feel free to adjust based on your comfort level, especially since it's a manageable day trip. Keep an eye on your fuel gauge, particularly during the 166.5-mile stretch on the Vietnam Veterans Memorial Highway, to ensure you don't run low. The estimated fuel cost of $49 is a good baseline for budgeting your trip.
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 153.6 miles from Boise, ID, or about 2h 29m into the drive.
The longest continuous stretch on this route runs about 166.5 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 68 miles or 1h 9m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 153.6 miles or 2h 29m 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 Rexburg, ID than in the middle of the route.
Before You Leave
+
Open the route before leaving Boise, 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 Boise, ID
This is one driving day of about 307.3 miles and 5h.
Your first comfortable stop window is around 68 miles from Boise, 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 166.5 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 10
5 decision points cluster between mile 0 and 306.2 — 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
Turn right
Navigation decision point
5
0.1 mi into trip|~0m in|South 6th Street
Turn right onto South 6th Street
Navigation decision point
6
3.7 mi into trip|~8m in|US 20; US 26 / Idaho Medal of Honor Highway
Take the ramp onto US 20; US 26 / Idaho Medal of Honor Highway toward I 84 East
Lane positioning matters here
Use the left lane.
Toward I 84 East
6
280.1 mi into trip|~4h 29m in|US 20
Take the exit onto US 20 toward US 20 East, I 15: Rigby, West Yellowstone
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 119
Toward US 20 East, I 15: Rigby, West Yellowston...
7
306.2 mi into trip|~4h 58m in
Keep slight right at fork toward ID 33: Salmon, Rexburg
Highway fork - watch signs carefully. Multiple destination signs - pick the right one
Toward ID 33: Salmon, Rexburg
Fuel & Cost
Regular Gas
$47.90 one way
$95.80 round trip
$3.96/gal25.4 MPG avg108 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.17
$50.49
$100.97
premium
$4.47
$54.13
$108.26
diesel
$4.80
$58.02
$116.05
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: 107.5 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $32 in charging
· 1 stop
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
92.2
1
$32.27
$14.75
Efficient EV
76.8
0
$26.89
$12.29
EV Truck/SUV
122.9
1
$43.02
$19.67
Gas CO2
108 kg
EV CO2
36 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 Jul 17, 2026
Origin
Boise, ID
Late night
in Boise on Sunday
Local time
1:15 AM
MDT
Current temp
100°F
Isolated Showers And Thunderstorms
WSW 2 to 6 mph21% chanceLive forecast
Flash Flood Watch
Flash Flood Watch issued July 17 at 1:18PM MDT until July 17 at 9:00PM MDT by NWS Boise ID
Special Weather Statement
Special Weather Statement issued July 17 at 1:10PM MDT by NWS Pocatello ID
Destination
Rexburg, ID
Late night
in Rexburg on Sunday
Local time
1:15 AM
MDT
Current temp
91°F
Slight Chance Showers And Thunderstorms
SSW 5 to 8 mph33% chanceLive forecast
Flash Flood Watch
Flash Flood Watch issued July 17 at 1:18PM MDT until July 17 at 9:00PM MDT by NWS Boise ID
Special Weather Statement
Special Weather Statement issued July 17 at 1:10PM MDT by NWS Pocatello ID
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
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
5h 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...
7 mi from route
~18 min detour
Free
near mile 95.4
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?
The drive is characterized as a 'Mixed drive,' meaning you'll experience segments of faster highway travel interspersed with other road types. You'll spend 36% of your time on interstates, but the Vietnam Veterans Memorial Highway is a significant part of the journey, featuring the longest uninterrupted stretch at 166.5 miles. This suggests a varied driving experience, shifting from potentially faster-paced interstate sections to potentially more winding or scenic highway portions as you progress toward Rexburg. The profile indicates you won't be on a single type of road for the entire trip.
36% highway, the rest on surface roads — varied driving throughout.
18 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 166.5 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 10 points where you need to pay attention to lane position or signs. The trickiest moment comes early in the drive.
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 307.3 miles you will encounter 10 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: near the start: Navigation decision point; at 0.1 miles (South 6th Street): Navigation decision point; at 3.7 miles (US 20; US 26 / Idaho Medal of Honor Highway): Lane positioning matters here.
Elevation Profile
Hilly terrain with moderate elevation changes
4,866 ft2,539 ft
Total Climb
3,169 ft
Total Descent
1,003 ft
Highest Point
4,866 ft
~307.3 mi in
Elevation Range
2,327 ft
Notable High Points
4,468 ft at ~175.6 miles+214 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Boise, ID and Rexburg, ID, road signs point toward Idaho Falls and Yellowstone.
Boise is the capital and largest city of Idaho. Boise offers numerous recreational opportunities, including extensive hiking and biking in the foothills to the immediate north of downtown. Boise is a regional hub for jazz, theater, and indie music, and is home to several museums.
Top landmarks
•Idaho State Capitol — Idaho state capitol building in Boise, Idaho, U.S.A.
•Cathedral of St. John the Evangelist — church in Idaho, United States
•Morris Hill Cemetery Mausoleum — mausoleum in Morris Hill Cemetery, Boise, Idaho
Rexburg is a city in Eastern Idaho. Rexburg is close to the St. Anthony Sand Dunes, the West Entrance of Yellowstone National Park and the Grand Tetons.
Top landmarks
•Jacob Spori Building — historic building at Brigham Young University Idaho in Rexburg, Idaho, United St...
•Madison County Courthouse — historic courthouse in Rexburg, Idaho, United States
Doable as a same-day drive at 5h. Total distance: 307.3 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
5h drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (36%). 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 166.5 miles on Vietnam Veterans Memorial Highway. The full list of main roads is in the Roads section above.
Yes — we found about 19 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 19 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: Navigation decision point; at 0.1 miles (South 6th Street): Navigation decision point; at 3.7 miles (US 20; US 26 / Idaho Medal of Honor Highway): Lane positioning matters here.
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 5.0 hours each way, a round trip means 10.0 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Rexburg, ID before the return drive.
