Lockwood, MT to West Yellowstone, MT is 238.5 miles and takes about 4h 25m via I 90 and Gallatin Road, with a fuel budget near $41 and enough daylight to finish in a day. This trip stays within the Mountain West region, offering a straightforward path for a single day of travel. You'll spend a good portion of your time on the interstate before transitioning to more local roads. Given its relatively short duration and moderate fuel cost, this route is ideal for a quick transition between locations.
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
119.2 miles from Lockwood, MT
A natural place for your longest stop of the day
, about 1h 58m into the drive
.
Main Roads
Road
Distance
Duration
I 90
147.4 mi
2h 26m
Gallatin Road
81.5 mi
1h 41m
Huffine Lane
5.3 mi
7m
West Main Street
1.7 mi
3m
North 7th Avenue
1.3 mi
2m
Firehole Avenue
0.2 mi
<1m
Johnson Lane
0.2 mi
<1m
North Canyon Street
0.2 mi
<1m
Longest stretch:
I 90
— 147.4 mi, about 2h 26m
Traffic on I-90
Hour-of-day weekday pattern from 32 FHWA count stations on your route.
Peak
4 PM
~952 veh/hr typical
· worst 1,213
Quietest
2 AM
~52 veh/hr
Peak-to-quiet ratio
18.3×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 103 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 Lockwood, MT and West Yellowstone, MT.
1
Start on Johnson Lane
0.2 mi·32 sec·Johnson Lane
2
Take the ramp
0.4 mi·54 sec
3
Merge onto I 90; US 87; US 212
1.8 mi·2 min·I 90; US 87; US 212
4
Continue on I 90; US 212
113 mi·1 hr 51 min·I 90; US 212
5
Continue on I 90; US 89; US 191
7.0 mi·6 min·I 90; US 89; US 191
6
Continue on I 90; US 191
26 mi·26 min·I 90; US 191
7
Take the exit
0.3 mi·38 sec
Toward MT 205
8
Turn left onto North 7th Avenue
1.3 mi·2 min·North 7th Avenue
9
At end of road, turn right onto US 191; MT 84
1.7 mi·3 min·West Main Street
10
Continue on US 191; MT 84
5.3 mi·7 min·Huffine Lane
Use the left / straight / right lanes.
11
Turn left onto US 191
82 mi·1 hr 41 min·Gallatin Road
12
Continue on US 191; US 287
0.2 mi·32 sec·North Canyon Street
13
Turn right onto US 20
0.2 mi·45 sec·Firehole Avenue
14
Turn left onto Electric Street
39 ft·1 sec·Electric Street
15
Arrive at destination
Electric Street
Trip Plan
To make the most of this 4h 25m drive, consider leaving Lockwood, MT in the morning to allow ample time for any unexpected delays or a brief stop. The route is manageable in one day, so you have the flexibility to depart when you're ready. Keep an eye on your fuel gauge, especially during the 147.4-mile stretch on I 90, as services might be less frequent. While the fuel cost is estimated at $41, it's always wise to start with a full tank. The transition from I 90 to Gallatin Road marks a change in road type, so be prepared for different driving conditions.
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 119.2 miles from Lockwood, MT, or about 1h 58m into the drive.
The longest continuous stretch on this route runs about 147.4 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 52 miles or 52m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 119.2 miles or 1h 58m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 31m
Traffic, exits, and arrival timing usually matter more near West Yellowstone, MT than in the middle of the route.
Before You Leave
+
Open the route before leaving Lockwood, MT 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 Lockwood, MT
This is one driving day of about 238.5 miles and 4h 25m.
Your first comfortable stop window is around 52 miles from Lockwood, MT.
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 I 90 for about 147.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
The midpoint is around 119.2 miles from Lockwood, MT, 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 147.4 miles.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 7
5 decision points cluster between mile 148 and 238.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
148 mi into trip|~2h 28m in
Take the exit toward MT 205
Exit ramp - move to the correct lane early
Toward MT 205
4
149.6 mi into trip|~2h 31m in|US 191; MT 84 / West Main Street
At end of road, turn right onto US 191; MT 84 / West Main Street
Navigation decision point
4
156.6 mi into trip|~2h 42m in|US 191 / Gallatin Road
Turn left onto US 191 / Gallatin Road
Navigation decision point
5
238.3 mi into trip|~4h 24m in|US 20 / Firehole Avenue
Turn right onto US 20 / Firehole Avenue
Navigation decision point
5
238.5 mi into trip|~4h 25m in|Electric Street
Turn left onto Electric Street
Navigation decision point
Fuel & Cost
Regular Gas
$41.36 one way
$82.72 round trip
$4.41/gal25.4 MPG avg83 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.61
$43.26
$86.52
premium
$4.95
$46.48
$92.96
diesel
$5.60
$52.57
$105.15
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$41
Meals
$25–$50
Total
$66–$91
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 83.4 kg one way.
Prices: EIA weekly data, 2026-08-31.
Driving Electric?
About $25 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
71.6
0
$25.04
$11.45
Efficient EV
59.6
0
$20.87
$9.54
EV Truck/SUV
95.4
1
$33.39
$15.26
Gas CO2
83 kg
EV CO2
28 kg (66% less)
Plan for 0 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 Sep 2, 2026
Origin
Lockwood, MT
Morning
in Lockwood on Friday
Local time
6:42 AM
MDT
Current temp
90°F
Mostly Sunny
SW 5 to 13 mph12% chanceLive forecast
Fire Weather Watch
Fire Weather Watch issued September 2 at 7:20AM MDT until September 3 at 8:00PM MDT by NWS Billings MT
High Wind Warning
High Wind Warning issued September 1 at 11:37PM MDT until September 2 at 9:00PM MDT by NWS Great Falls MT
Destination
West Yellowstone, MT
Morning
in West Yellowstone on Friday
Local time
6:42 AM
MDT
Current temp
65°F
Mostly Sunny
SW 6 to 26 mph12% chanceLive forecast
Fire Weather Watch
Fire Weather Watch issued September 2 at 7:20AM MDT until September 3 at 8:00PM MDT by NWS Billings MT
High Wind Warning
High Wind Warning issued September 1 at 11:37PM MDT until September 2 at 9:00PM MDT by NWS Great Falls MT
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
25 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
4h 25m 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.
Yellowstone National Park
National Park
28 mi from route
~69 min detour
$35
near mile 238.5
Caution: Stay Away From Bull Elk
Park Closure: Biscuit Basin Closed Due to Hydrothermal Explosion
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This drive is mostly highway, with 62% of the 238.5 miles on interstates. You'll experience a longest stretch of 147.4 miles on I 90, likely with fewer exits and more consistent speeds. After I 90, you'll transition to Gallatin Road and Huffine Lane, which will feel more like rural cruising. Expect a change in scenery and potentially more local traffic as you leave the interstate.
62% highway — fuel and pacing are the main things to plan.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 147.4 mi on I 90.
How Hard Is This Drive?
3/10
This is a straightforward highway drive that stays mostly on I 90 and Gallatin Road. There are only a few real navigation decisions along the way. The trickiest moment comes around 148 miles in.
Driving Effort3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 4h 25m drive. You will face about 7 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 148 miles: Exit ramp - move to the correct lane early; at 149.6 miles (US 191; MT 84 / West Main Street): Navigation decision point; at 156.6 miles (US 191 / Gallatin Road): Navigation decision point.
West Yellowstone, Montana, is a rustic mountain town nestled between National Forest lands and is the gateway to Yellowstone National Park. It is only a mile from the park entrance, and the town's airport is the closest to the park, and to attractions like Old Faithful.
Top landmarks
•Eagle's Store — historic commercial building in West Yellowstone, Montana, United States
The longest stretch is about 147.4 miles on I 90. 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 MT 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 148 miles: Exit ramp - move to the correct lane early; at 149.6 miles (US 191; MT 84 / West Main Street): Navigation decision point; at 156.6 miles (US 191 / Gallatin Road): Navigation decision point.
Yes — Yellowstone National Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.4 hours each way, an in-and-out day trip would put you behind the wheel for 8.8 hours — manageable with a long break at West Yellowstone, MT, but most travelers stay overnight.
