How far is Bozeman, MT from East Helena, MT?
The driving distance from Bozeman, MT to East Helena, MT is about 92.3 miles (148.6 km), with a travel time of about 01h 42m by car.
- The straight-line flight distance is about 75.6 miles (121.7 km).
- For a round trip, plan for roughly 03h 24m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM MDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 01h 42m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 in Gallatin County, Montana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Bozeman and East Helena.
Turn-by-Turn Driving Directions
Step-by-step road directions between Bozeman and East Helena.
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1
Start on North Willson Avenue
2143 ft · 1 min · North Willson Avenue
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2
Turn left onto West Peach Street
1896 ft · 42 sec · West Peach Street
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3
Turn right onto North 7th Avenue
1.4 km · 2 min · North 7th Avenue
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4
Turn left
31.8 mi · 32 min
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5
Take the exit slight right toward US 287: Helena, Ennis
1498 ft · 37 sec
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6
Turn right onto Highway 287
58.4 mi · 1 hr 5 min · Highway 287
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7
Turn right onto South Montana Avenue
828 ft · 42 sec · South Montana Avenue
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8
Turn left onto East Main Street
81 m · 7 sec · East Main Street
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9
Arrive at your destination
0 m · 1 sec · East Main Street
Car Route Details
A richer read on the saved driving route between Bozeman and East Helena.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Highway 287
Turn right onto Highway 287
58.4 mi · 01h 05m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Bozeman and Sunny near East Helena.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Bozeman to East Helena?
The road trip is about 92.3 miles (148.6 km) and usually takes 01h 42m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Three Forks is a useful midpoint, sitting about 46.1 miles from Bozeman and 46.2 miles from East Helena.
How much longer is the road route than the straight-line distance?
The direct path is about 75.6 miles (121.7 km), while the road route adds roughly 16.7 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 8:00 AM to 10:00 AM MDT. If you want a more comfortable same-day return, try to leave by 3:06 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $12.69 one way or $25.38 round trip. Estimated CO2 is about 29 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Bozeman and Sunny near East Helena.
Stop Ideas Near Three Forks
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 Three Forks.
Bozeman, MT
Butte, MT
Livingston, MT
Flight Path Map
This map shows the direct air route between Bozeman and East Helena. Straight-line distance: 75.61 mi (121.68 km).
#1 Bozeman
Town in Gallatin County, Montana, United States
| Population | 50,970 |
| Coordinates | 45.6796500, -111.0385600 |
| Altitude | 1468 |
| Country | United States |
#2 East Helena
Town of the United States
| Population | 2,130 |
| Coordinates | 46.5896600, -111.9155500 |
| Altitude | 1185 |
| Country | United States |
End: East Helena (-111.91555, 46.58966)
Estimated Travel Time
Distance: 149 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 04m |
| 40 mph (64.37 km/h) | 02h 18m |
| 50 mph (80.47 km/h) | 01h 50m |
| 60 mph (96.56 km/h) | 01h 32m |
| 70 mph (112.65 km/h) | 01h 19m |
| 80 mph (129 km/h) | 01h 09m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $12.69 | $25.38 |
| Mid-grade | $4.23 | $13.79 | $27.59 |
| Premium | $4.55 | $14.83 | $29.66 |
| Diesel | $5.41 | $17.64 | $35.29 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.