Somers Bay Cafe
Near the start, right off the route
Somers, Montana
Hours: 7 am–2 pm
+14068572660
Visit websiteCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards
Drive Time
7h 48m
Distance
447.2 mi
720 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$71
one way
EV Charging
Excellent
20 DC fast
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Somers, MT
Alex Moliski
Lockwood, MT
Wikimedia Commons
Somers, MT to Lockwood, MT is 447.2 miles and takes about 7h 48m via I 90, I 15, and MT 83, with a fuel budget near $71 and enough daylight to finish in a day. This drive stays within Montana, traversing the Mountain West region for its entirety. It's a straightforward, mostly highway trip connecting two points in Big Sky Country. You'll be spending nearly all your time on major interstates, making it a functional transit route rather than a scenic tour. Plan for a single day of driving, as the duration is well within typical limits.
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
223.6 miles from Somers, MT
A natural place for your longest stop of the day , about 4h 3m into the drive .
| Road | Distance | Duration |
|---|---|---|
| I 90 | 166.6 mi | 2h 44m |
| I 15 | 110.8 mi | 1h 51m |
| MT 83 | 91.1 mi | 1h 43m |
| State Highway 141 | 32.5 mi | 35m |
| MT 200 | 23.8 mi | 25m |
| US 12 | 12.9 mi | 14m |
| MT 82 | 5.7 mi | 7m |
| Somers Road | 1.3 mi | 3m |
Step-by-step road directions between Somers, MT and Lockwood, MT.
Start on Somers Road
Turn right onto MT 82
Turn right onto MT 35
Turn left onto MT 83
Turn left onto MT 200
Turn right onto MT 141
Turn sharp right onto US 12
Turn left
Continue on this road
Take the ramp
Merge onto I 90
Keep slight right at fork onto I 15; I 90
Continue on I 90; US 89; US 191
Continue on I 90; US 191
Continue on I 90; US 87; US 212
Take the exit
Turn left onto Johnson Lane
Arrive at destination
To make the most of this 7h 48m drive, aim for an early morning departure from Somers. This allows you to cover the 166.6-mile stretch on I 90 with less traffic. With only two recommended stops, you can be strategic about when and where you refuel, keeping the $71 fuel cost in mind. Consider stopping around the halfway point to break up the drive. Since the entire trip is manageable in one day, you have flexibility; however, breaking it up with a longer lunch stop can make it more comfortable. The route is predominantly highway, so keep an eye on your fuel gauge as services can be spread out in Montana.
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.
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 98 miles or 1h 54m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 223.6 miles or 4h 3m 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 47m
Traffic, exits, and arrival timing usually matter more near Lockwood, MT than in the middle of the route.
Open the route before leaving Somers, 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.
Pick one backup stop option before the midpoint in case traffic changes your pacing.
Day 1
Settle into the route from Somers, MT
This is one driving day of about 447.2 miles and 7h 48m.
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
224 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.
A short stop after about 98 miles helps settle the day before fatigue starts building.
The midpoint is around 223.6 miles from Somers, MT, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 90 if your tank is already low. That segment runs about 166.6 miles.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Picked by where they fit in your drive — first break, midpoint reset, final stretch.
Best meal stop
Somers, Montana
Near the start, right off the route
Hours: 7 am–2 pm
+14068572660
Pizza Ranch
Billings, Montana
MacKenzie River Pizza Co.
Belgrade, Montana
Best coffee break · home stretch
Billings, Montana
Near the end, right off the route
Hours: 7 am–8 pm
+14068942073
Mountain Cafe
Somers, Montana
Reel Coffee Co
Belgrade, Montana
Near the start, right off the route
Somers, Montana
Hours: 7 am–2 pm
+14068572660
Visit websiteNear the end, short detour
Billings, Montana
Hours: 11 am–9:30 pm
+14068392366
Visit websiteAround the midpoint, short detour
Belgrade, Montana
Hours: 11 am–9 pm
+14063880016
Visit websiteNear the end, short detour
Billings, Montana
Hours: 6 am–3 pm
+14065343599
Visit websiteNear the end, short detour
Billings, Montana
Hours: 11 am–10 pm
+14062598424
Visit websiteAround the midpoint, short detour
Belgrade, Montana
Hours: 4:30 am–8 pm
+14063168129
Visit websiteNear the end, short detour
Billings, Montana
Hours: 11 am–8 pm
+14063715124
Around the midpoint, ~11 min detour
Garrison, Montana
Hours: 7 am–8 pm
+14064926381
Near the end, right off the route
Billings, Montana
Hours: 7 am–8 pm
+14068942073
Visit websiteNear the start, short detour
Somers, Montana
Hours: 7:30 am–3 pm
+14063035157
Visit websiteAround the midpoint, short detour
Belgrade, Montana
Hours: 7 am–2 pm
Around the midpoint, short detour
Belgrade, Montana
Hours: 6 am–3:30 pm
+14069200386
Visit websiteNear the end, short detour
Billings, Montana
Hours: 6 am–9 pm
+14063846999
Visit websiteAround the midpoint, short detour
Belgrade, Montana
Hours: 5:30 am–1 pm
Near the start, ~10 min detour
Lakeside, Montana
Hours: 6 am–6 pm
+14068440705
Visit websiteAround the midpoint, ~12 min detour
Belgrade, Montana
Hours: 6:30 am–2 pm
Around the midpoint, short detour
Belgrade, Montana
Hours: Open 24 hours
Visit websiteAround the midpoint, short detour
Belgrade, Montana
Hours: Open 24 hours
+14063887684
Around the midpoint, ~12 min detour
Butte, Montana
Hours: Open 24 hours
Visit websiteNear the start, ~11 min detour
Lakeside, Montana
Hours: Open 24 hours
+18777983752
Visit websiteNear the start, ~11 min detour
Lakeside, Montana
Hours: Open 24 hours
+16508228157
Visit websiteAround the midpoint, ~12 min detour
Whitehall, MT
Hours: Open 24 hours
+14062873541
Visit websiteNear the end, ~12 min detour
Billings, Montana
Hours: 3:30–9 pm
+14063715114
Visit websitePlace data sourced from public business listings. Hours and availability may vary.
5 decision points cluster between mile 1.3 and 214.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
Turn right onto MT 82
Navigation decision point
Turn right onto MT 35
Lane positioning matters here
Turn left onto MT 83
Lane positioning matters here
Turn sharp right onto US 12
Sharp turn - reduce speed on approach
Keep slight right at fork onto I 15; I 90
Highway fork - watch signs carefully. Lane positioning matters here
Regular Gas
$70.87 one way
$141.73 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $74.28 | $148.56 |
| premium | $4.53 | $79.77 | $159.55 |
| diesel | $5.61 | $98.74 | $197.47 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$71
Meals
$25–$50
Total
$96–$121
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 156.5 kg one way. Prices: EIA weekly data, 2026-04-13.
EV Charging Along Route
20 DC fast chargers · Coverage: excellent
Town Pump Travel Center - Tesla Supercharger
Billings, MT
12 DCFC
Town Pump Travel Center - Tesla Supercharger
Butte, MT
8 DCFC
Town Pump Travel Center - Tesla Supercharger
Belgrade, MT
8 DCFC
Bozeman, MT
Bozeman, MT
8 DCFC
Fairfield Inn & Suites - Tesla Supercharger
Laurel, MT
8 DCFC
Best Western Plus Butte Plaza Inn - Tesla Supercharger
Butte, MT
6 DCFC
Flying J Town Pump (Butte, MT)
Butte, MT
4 DCFC
Target T1237 (Bozeman, MT)
Bozeman, MT
4 DCFC
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $47 in charging · 1 stop · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 134.2 | 1 | $46.96 | $21.47 |
| Efficient EV | 111.8 | 1 | $39.13 | $17.89 |
| EV Truck/SUV | 178.9 | 2 | $62.61 | $28.62 |
Gas CO2
156 kg
EV CO2
52 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.
Current conditions at both ends of the drive.
Origin
Morning in Somers on Tuesday
Local time
8:05 AM
MDT
Current temp
53°F
Unavailable
Destination
Morning in Lockwood on Tuesday
Local time
8:05 AM
MDT
Current temp
51°F
Unavailable
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
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
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.
You'll be on highways for 99% of this 447.2-mile drive. The longest continuous stretch on a major road is 166.6 miles, primarily on I 90. This means you can expect long periods of consistent cruising. The transition from highway to surface roads will be minimal, occurring only near your destination. The experience is largely rural, with the expected merges and exits associated with interstate travel.
This is a straightforward highway drive that stays mostly on I 90 and I 15. There are only a few real navigation decisions along the way. The trickiest moment comes around 1.3 miles in near MT 82.
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 48m, 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 1.3 miles (MT 82): Navigation decision point; at 7 miles (MT 35): Lane positioning matters here; at 7.4 miles (MT 83): Lane positioning matters here.
Weekend Trip
Doable as a same-day drive at 7h 48m. Total distance: 447.2 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
Solo Traveler
7h 48m drive, plan rest stops for pacing.
First-Time Driver
Mostly highway driving (99%). Straightforward navigation.
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, NREL for EV charging, and NPS for national parks. See our methodology for refresh cadence and limitations.
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