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Trip from Roundup, MT to Lockwood, MT

Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards

Drive Time

1h

Distance

52.2 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

Save up to 15 min
4 AM
0h 56m ★
6 AM
1h 1m
8 AM
1h 11m
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.

Downtown Roundup, MT, MT

Roundup, MT

James Mirakian

human settlement in Yellowstone County, Montana, United States of America

Lockwood, MT

Wikimedia Commons

Trip Overview

Roundup, MT to Lockwood, MT is 52.2 miles and takes about 1 hour via 1st Avenue West and I-90, with a fuel budget near $8 and enough daylight to finish in a day. This is a straightforward, same-day drive entirely within Montana's Mountain West region. Expect a local feel for much of the journey, transitioning onto the interstate for a portion. It's a short enough trip that you won't spend all day in the car, leaving plenty of time for activities at your destination. Consider this a quick hop rather than an epic expedition.

Main Roads

Road Distance Duration
1st Avenue West 44.4 mi 48m
Main Street 3.8 mi 6m
I 90 1.8 mi 2m
US Highway 87 East 1.3 mi 1m
Johnson Lane 0.4 mi <1m
I 90 Business 0.3 mi <1m
Roundup Road <0.1 mi <1m
Longest stretch: 1st Avenue West — 44.4 mi, about 48m

Turn-by-Turn Driving Directions

Step-by-step road directions between Roundup, MT and Lockwood, MT.

1

Start on US 12; US 87

0.2 mi · 24 sec · Main Street
2

Turn right onto US 12; US 87

44 mi · 48 min · 1st Avenue West
Use the right lane.
3

Continue on US 87

261 ft · 6 sec · Roundup Road
4

Turn right onto US 87

3.5 mi · 5 min · Main Street
5

Turn left onto I 90 Business; US 87

1.3 mi · 1 min · US Highway 87 East
6

Turn left onto I 90 Business; US 87

0.3 mi · 40 sec · I 90 Business; US 87
7

Continue on I 90; US 87; US 212

1.8 mi · 2 min · I 90; US 87; US 212
8

Take the exit

0.3 mi · 39 sec
Toward Johnson Lane
9

Turn left onto Johnson Lane

0.4 mi · 46 sec · Johnson Lane
10

Arrive at destination

Johnson Lane

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

city in and county seat of Yellowstone County, Montana, United States

Mid-route town

Meal stop

Billings, MT

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

First break window

Fuel and coffee

A short stop after about 11 miles helps settle the day before fatigue starts building.

Halfway reset

Meal break

The midpoint is around 26.1 miles from Roundup, 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 5

5 decision points cluster between mile 0.2 and 51.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.

5
0.2 mi into trip | ~0m in | US 12; US 87 / 1st Avenue West

Turn right onto US 12; US 87 / 1st Avenue West

Lane positioning matters here

Use the right lane.
3
48.2 mi into trip | ~54m in | I 90 Business; US 87 / US Highway 87 East

Turn left onto I 90 Business; US 87 / US Highway 87 East

Navigation decision point

3
49.5 mi into trip | ~56m in | I 90 Business; US 87

Turn left onto I 90 Business; US 87

Navigation decision point

4
51.6 mi into trip | ~59m in

Take the exit toward Johnson Lane

Exit ramp - move to the correct lane early

Toward Johnson Lane
3
51.9 mi into trip | ~1h in | Johnson Lane

Turn left onto Johnson Lane

Navigation decision point

Fuel & Cost

Regular Gas

$8.27 one way

$16.54 round trip

$4.03/gal 25.4 MPG avg 18 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.22 $8.67 $17.34
premium $4.53 $9.31 $18.62
diesel $5.61 $11.53 $23.05

No toll roads detected on this route.

Drive Cost (one way)

Fuel

$8

Estimated CO2 emission: 18.3 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 15.7 0 $5.48 $2.51
Efficient EV 13.1 0 $4.57 $2.09
EV Truck/SUV 20.9 0 $7.31 $3.34

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.

Forecast as of Apr 15, 2026

Origin

Roundup, MT

Afternoon in Roundup on Saturday

Local time

12:56 PM

MDT

Current temp

46°F

Unavailable

Live forecast

Destination

Lockwood, MT

Afternoon in Lockwood on Saturday

Local time

12:56 PM

MDT

Current temp

77°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

31 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

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 characterized by frequent turns, giving it a 'turn-heavy local drive' profile. While only 7% of the route is on the highway, the longest uninterrupted stretch covers a significant 44.4 miles on 1st Avenue West. You'll navigate through local roads, including parts of 1st Avenue West and Main Street, before merging onto I-90 for a brief period. The road surface and speed will change as you move from town streets to the open highway. Be prepared for a dynamic driving experience rather than a consistent pace.

Only 7% highway — the rest is turn-by-turn surface driving.
10 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 44.4 mi on 1st Avenue West.

How Hard Is This Drive?

2/10

Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. Navigation is very simple - set it and forget it for most of the drive. The trickiest moment comes around 0.2 miles in near US 12; US 87 / 1st Avenue West.

Driving Effort 2/10

Very easy - short and simple to drive

Balances navigation complexity with total wheel time.

The drive from Roundup, MT to Lockwood, MT is easy. At 1h with 7% highway, most drivers will find it relaxed and low-stress.

Where does it get tricky?

The main spots that need attention: at 0.2 miles (US 12; US 87 / 1st Avenue West): Lane positioning matters here; at 48.2 miles (I 90 Business; US 87 / US Highway 87 East): Navigation decision point; at 49.5 miles (I 90 Business; US 87): Navigation decision point.

Who Is This Route For?

Weekend Trip

Doable as a same-day drive at 1h. Total distance: 52.2 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 (7%). Straightforward navigation.

Scenic Drive

Mostly surface roads route profile.

Frequently Asked Questions

The longest stretch is about 44.4 miles on 1st Avenue West. The full list of main roads is in the Roads section above.

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 (US 12; US 87 / 1st Avenue West): Lane positioning matters here; at 48.2 miles (I 90 Business; US 87 / US Highway 87 East): Navigation decision point; at 49.5 miles (I 90 Business; US 87): Navigation decision point.

Yes. A round trip is manageable in a single day if you plan a break at Lockwood, MT before heading back.

How this page is built

Compiled by the Trip.ovh 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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