Origin
Lockwood, MT
Late night in Lockwood on Tuesday
Local time
2:09 AM
MDT
Current temp
51°F
Unavailable
Live forecast
Trip from Lockwood, MT to Roundup, MT
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards
Drive Time
1h
Distance
52.1 mi
84 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$8
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 56m
★
6 AM
1h 1m
8 AM
1h 10m
10 AM
1h 4m
12 PM
1h 3m
3 PM
1h 5m
5 PM
1h 10m
8 PM
0h 58m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Lockwood, MT
Wikimedia Commons
Roundup, MT
James Mirakian
Trip Overview
Lockwood, MT to Roundup, MT is 52.1 miles and takes about 1 hour via US 87 and I 90, with a fuel budget near $8 and enough daylight to finish in a day. This short trip stays within the Mountain West region, transitioning from the Lockwood area to Roundup. Given its brief duration, this route is ideal for a spontaneous day trip or as a brief segment of a larger Montana adventure. You'll find it to be a straightforward drive, mostly on surface roads, making it accessible for most vehicles.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Roundup Road | 44.4 mi | 48m |
| US 87 | 3.5 mi | 5m |
| I 90 | 1.8 mi | 2m |
| US Highway 87 East | 1.2 mi | 1m |
| I 90 Business | 0.3 mi | <1m |
| Main Street | 0.2 mi | <1m |
| Johnson Lane | 0.2 mi | <1m |
Longest stretch:
Roundup Road
— 44.4 mi, about 48m
Turn-by-Turn Driving Directions
Step-by-step road directions between Lockwood, MT and Roundup, 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
Take the exit onto I 90 Business; US 87
0.3 mi
·
36 sec
·
I 90 Business; US 87
Toward I 90 Business, US 87 North: Lockwood, Roundup
5
Merge onto I 90 Business; US 87
1.2 mi
·
1 min
·
US Highway 87 East
6
Take the exit onto US 87
3.5 mi
·
5 min
·
US 87
7
Turn slight left onto US 87
44 mi
·
48 min
·
Roundup Road
8
Turn left onto US 12; US 87
0.2 mi
·
20 sec
·
Main Street
9
Arrive at destination
US 12; US 87
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
26 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.
Pacing Suggestions
Fuel and coffee
A short stop after about 11 miles helps settle the day before fatigue starts building.
Halfway reset
Meal breakThe midpoint is around 26.1 miles from Lockwood, MT, which is a good place for a longer meal and fuel stop.
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 65 decision points cluster between mile 0.2 and 3.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
3
0.2 mi into trip
|
~0m in
Take the ramp
Navigation decision point
3
0.6 mi into trip
|
~1m in
|
I 90; US 87; US 212
Merge onto I 90; US 87; US 212
Merge point - match speed before joining
5
2.5 mi into trip
|
~3m in
|
I 90 Business; US 87
Take the exit onto I 90 Business; US 87 toward I 90 Business, US 87 North: Lockwood, Roundup
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 90 Business, US 87 North: Lockwood, Ro...
4
2.7 mi into trip
|
~4m in
|
I 90 Business; US 87 / US Highway 87 East
Merge onto I 90 Business; US 87 / US Highway 87 East
Merge point - match speed before joining
3
3.9 mi into trip
|
~5m in
|
US 87
Take the exit onto US 87
Exit ramp - move to the correct lane early
Fuel & Cost
Regular Gas
$8.26 one way
$16.51 round trip
$4.03/gal
25.4 MPG avg
18 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $8.65 | $17.31 |
| premium | $4.53 | $9.29 | $18.59 |
| diesel | $5.61 | $11.50 | $23.01 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$8
Estimated CO2 emission: 18.2 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $5 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 15.6 | 0 | $5.47 | $2.50 |
| Efficient EV | 13 | 0 | $4.56 | $2.08 |
| EV Truck/SUV | 20.8 | 0 | $7.29 | $3.33 |
Gas CO2
18 kg
EV CO2
6 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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.
Destination
Roundup, MT
Late night in Roundup on Tuesday
Local time
2:09 AM
MDT
Current temp
28°F
Unavailable
Live forecast
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
23 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
1h on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
This drive is primarily on surface roads, with only 13% of the 52.1 miles on highways. You'll experience a longest stretch of 44.4 miles on Roundup Road, indicating a good amount of rural cruising. Expect to transition from highway segments to more local road driving as you approach Roundup.
Only 13% highway — the rest is turn-by-turn surface driving.
9 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 44.4 mi on Roundup Road.
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 around 0.2 miles in.
Driving Effort
3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 1h drive. You will face about 6 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.2 miles: Navigation decision point; at 0.6 miles (I 90; US 87; US 212): Merge point - match speed before joining; at 2.5 miles (I 90 Business; US 87): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h. Total distance: 52.1 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (13%). Straightforward navigation.
Scenic Drive
Mostly surface roads route profile.
Frequently Asked Questions
The longest stretch is about 44.4 miles on Roundup Road. The full list of main roads is in the Roads section above.
Yes — we found about 2 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.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
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 0.2 miles: Navigation decision point; at 0.6 miles (I 90; US 87; US 212): Merge point - match speed before joining; at 2.5 miles (I 90 Business; US 87): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Yes. A round trip is manageable in a single day if you plan a break at Roundup, MT before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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