How far is Butte, MT from Helena, MT?
Fastest route
The route from Butte, Montana to Helena, Montana is approximately 68.7 miles and takes about 1 hour and 9 minutes via I-15 N. It is the fastest route currently available and avoids road closures on Rodney St.
Directions
- Start on Iron St and head east toward S Main St.
- At the first cross street, turn right onto S Main St.
- Turn left onto Montana St and continue straight to stay on Montana St.
- Make a left turn onto La Salle St.
- Use the left lane to take the Interstate 15 N/Interstate 90 E ramp.
- Follow I-15 N until you reach exit 192 for US-12 W/Prospect Ave in Helena.
- Take exit 192 and continue on US-12 W/Prospect Ave. Drive to E 6th Ave.
- Turn left onto US-12 W/Prospect Ave.
- Use the left two lanes to turn left onto N Montana Ave (signs for Downtown/Helena).
- Turn right onto E 6th Ave.
- Finally, turn left onto N Davis St.
Tips & Suggestions
- 🚗 Plan for about 1 hour and 9 minutes of travel time.
- ⚠️ Keep an eye out for road closures on Rodney St and avoid that route.
- 🛣️ Stay on I-15 N until you reach exit 192.
- 📍 Use the left lane to take the Interstate 15 N/Interstate 90 E ramp.
- ⛽ It's a good idea to ensure your vehicle has enough fuel for the journey.
- 🚥 Follow the road signs for Downtown/Helena when turning onto N Montana Ave.
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 08m.
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.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Light Rain then Showers And Thunderstorms
Chance Light Rain then Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Butte and Helena.
Turn-by-Turn Driving Directions
Step-by-step road directions between Butte and Helena.
-
1
Start on West Iron Street
21 m · 5 sec · West Iron Street
-
2
Turn right onto South Main Street
2042 ft · 45 sec · South Main Street
-
3
Turn right onto West Front Street
1321 ft · 29 sec · West Front Street
-
4
Turn left onto South Montana Street
2287 ft · 46 sec · South Montana Street
-
5
Turn left onto La Salle Street
89 m · 5 sec · La Salle Street
-
6
Take the ramp straight
972 ft · 24 sec
-
7
Merge slight left
2.5 mi · 3 min
-
8
Take the exit slight right toward I 15 North: Helena
62.2 mi · 1 hr 1 min
-
9
Take the exit slight right toward I 15 Business, US 12, US 287: Townsend, Capitol Area
1583 ft · 41 sec
-
10
Continue on Prospect Avenue
1.2 mi · 3 min · Prospect Avenue
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11
Turn left onto North Montana Avenue
146 m · 18 sec · North Montana Avenue
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12
Turn right onto 11th Avenue
1.3 km · 2 min · 11th Avenue
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13
Turn right onto Cruse Avenue
50 m · 6 sec · Cruse Avenue
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14
Arrive at your destination
0 m · 1 sec · Cruse Avenue
Car Route Details
A richer read on the saved driving route between Butte and 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.
I 15 North
Take the exit slight right toward I 15 North: Helena
62.2 mi · 01h 01m
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.
Chance Light Rain then Showers And Thunderstorms leaving Butte and Chance Light Rain then Showers And Thunderstorms near Helena.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Butte to Helena?
The road trip is about 68.4 miles (110.1 km) and usually takes 01h 08m 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?
Boulder is a useful midpoint, sitting about 34.2 miles from Butte and 34.2 miles from Helena.
How much longer is the road route than the straight-line distance?
The direct path is about 47.2 miles (75.9 km), while the road route adds roughly 21.2 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 4:14 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $9.38 one way or $18.76 round trip. Estimated CO2 is about 21.4 kg one way.
What should you check before leaving?
Before you leave, expect Chance Light Rain then Showers And Thunderstorms around Butte and Chance Light Rain then Showers And Thunderstorms near Helena.
Stop Ideas Near Boulder
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 Boulder.
Butte, MT
Bozeman, MT
Flight Path Map
This map shows the direct air route between Butte and Helena. Straight-line distance: 47.14 mi (75.86 km).
#1 Butte
Consolidated city-county in Montana, United States
| Population | 34,190 |
| Coordinates | 46.0038200, -112.5347400 |
| Altitude | 1688 |
| Country | United States |
#2 Helena
State capital of Montana, United States and seat of Lewis and Clark County
| Population | 33,737 |
| Coordinates | 46.5927100, -112.0361100 |
| Altitude | 1237 |
| Country | United States |
End: Cruse Avenue (-112.036062, 46.592722)
Estimated Travel Time
Distance: 110 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 16m |
| 40 mph (64.37 km/h) | 01h 42m |
| 50 mph (80.47 km/h) | 01h 22m |
| 60 mph (96.56 km/h) | 01h 08m |
| 70 mph (112.65 km/h) | 00h 58m |
| 80 mph (129 km/h) | 00h 51m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $9.38 | $18.76 |
| Mid-grade | $4.23 | $10.20 | $20.39 |
| Premium | $4.55 | $10.96 | $21.93 |
| Diesel | $5.41 | $13.04 | $26.09 |
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 22, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.