How far is Boulder, MT from Lockwood, MT?
The driving distance from Boulder, MT to Lockwood, MT is about 231.6 miles (372.7 km), with a travel time of about 03h 34m by car.
- The straight-line flight distance is about 180.1 miles (289.8 km).
- For a round trip, plan for roughly 07h 09m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM MDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 03h 34m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City and the county seat of Park County, Montana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Light Rain then Showers And Thunderstorms
Mostly Sunny then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Boulder and Lockwood.
Turn-by-Turn Driving Directions
Step-by-step road directions between Boulder and Lockwood.
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1
Start on West Centennial Avenue
112 m · 18 sec · West Centennial Avenue
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2
Turn right onto South Main Street
800 ft · 16 sec · South Main Street
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3
Continue on State Highway 69
31.4 mi · 55 min · State Highway 69
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4
At the end of the road, turn left
1.3 mi · 2 min
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5
Take the ramp left
1885 ft · 46 sec
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6
Merge slight left
197.9 mi · 3 hr 18 min
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7
Take the exit slight right toward Johnson Lane
1505 ft · 40 sec
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8
Turn left onto Johnson Lane
1900 ft · 46 sec · Johnson Lane
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9
Arrive at your destination
0 m · 1 sec · Johnson Lane
Car Route Details
A richer read on the saved driving route between Boulder and Lockwood.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
State Highway 69
Merge slight left
198 mi · 03h 18m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Chance Light Rain then Showers And Thunderstorms leaving Boulder and Mostly Sunny then Chance Showers And Thunderstorms near Lockwood.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Boulder to Lockwood?
The road trip is about 231.6 miles (372.7 km) and usually takes 03h 34m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Livingston is a useful midpoint, sitting about 115.6 miles from Boulder and 115.9 miles from Lockwood.
How much longer is the road route than the straight-line distance?
The direct path is about 180.1 miles (289.8 km), while the road route adds roughly 51.5 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM MDT. If you want a more comfortable same-day return, try to leave by 9:50 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $31.81 one way or $63.61 round trip. Estimated CO2 is about 72.6 kg one way.
What should you check before leaving?
Before you leave, expect Chance Light Rain then Showers And Thunderstorms around Boulder and Mostly Sunny then Chance Showers And Thunderstorms near Lockwood.
Stop Ideas Near Livingston
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Livingston.
Livingston, MT
Bozeman, MT
Flight Path Map
This map shows the direct air route between Boulder and Lockwood. Straight-line distance: 180.09 mi (289.83 km).
#1 Boulder
Town in Montana
| Population | 1,291 |
| Coordinates | 46.2365900, -112.1208300 |
| Altitude | 1496 |
| Country | United States |
#2 Lockwood
Human settlement in Yellowstone County, Montana, United States of America
| Population | 6,797 |
| Coordinates | 45.8191200, -108.4148600 |
| Altitude | 943 |
| Country | United States |
End: Johnson Lane (-108.41395, 45.819127)
Estimated Travel Time
Distance: 373 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 42m |
| 40 mph (64.37 km/h) | 05h 47m |
| 50 mph (80.47 km/h) | 04h 37m |
| 60 mph (96.56 km/h) | 03h 51m |
| 70 mph (112.65 km/h) | 03h 18m |
| 80 mph (129 km/h) | 02h 53m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $31.81 | $63.61 |
| Mid-grade | $4.23 | $34.57 | $69.13 |
| Premium | $4.55 | $37.17 | $74.33 |
| Diesel | $5.41 | $44.22 | $88.43 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Montana · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.