How far is Hardin, MT from Helena, MT?
The driving distance from Hardin, MT to Helena, MT is about 280.2 miles (451 km), with a travel time of about 04h 32m by car.
- The straight-line flight distance is about 219.8 miles (353.8 km).
- For a round trip, plan for roughly 09h 04m 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 04h 32m.
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 in and county seat of Sweet Grass County, Montana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny then Chance Rain Showers
Chance Light Rain then Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Hardin and Helena.
Turn-by-Turn Driving Directions
Step-by-step road directions between Hardin and Helena.
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1
Start on North Crawford Avenue
2725 ft · 2 min · North Crawford Avenue
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2
Continue on North Crawford Avenue
1415 ft · 28 sec · North Crawford Avenue
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3
Continue straight
823 ft · 19 sec
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4
Continue straight
152 m · 17 sec
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5
Take the ramp left
1719 ft · 42 sec
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6
Merge slight left
42.6 mi · 41 min
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7
Continue straight
112.8 mi · 1 hr 52 min
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8
Continue straight
7 mi · 7 min
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9
Continue straight
57.8 mi · 59 min
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10
Take the exit slight right toward US 287: Helena, Ennis
1498 ft · 37 sec
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11
Turn right onto Highway 287
22.2 mi · 24 min · Highway 287
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12
Continue straight
1.1 mi · 1 min
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13
Continue straight
40.2 mi · 49 min
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14
Turn left onto North Montana Avenue
146 m · 18 sec · North Montana Avenue
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15
Turn right onto 11th Avenue
1.3 km · 2 min · 11th Avenue
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16
Turn right onto Cruse Avenue
50 m · 6 sec · Cruse Avenue
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17
Arrive at your destination
0 m · 1 sec · Cruse Avenue
Car Route Details
A richer read on the saved driving route between Hardin and Helena.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
North Crawford Avenue
Continue straight
113 mi · 01h 52m
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.
Partly Sunny then Chance Rain Showers leaving Hardin 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 Hardin to Helena?
The road trip is about 280.2 miles (451 km) and usually takes 04h 32m 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?
Big Timber is a useful midpoint, sitting about 142.9 miles from Hardin and 137.4 miles from Helena.
How much longer is the road route than the straight-line distance?
The direct path is about 219.8 miles (353.8 km), while the road route adds roughly 60.4 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 7:56 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $38.50 one way or $77.00 round trip. Estimated CO2 is about 87.9 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny then Chance Rain Showers around Hardin and Chance Light Rain then Showers And Thunderstorms near Helena.
Stop Ideas Near Big Timber
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 Big Timber.
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Flight Path Map
This map shows the direct air route between Hardin and Helena. Straight-line distance: 219.87 mi (353.84 km).
#1 Hardin
City in Big Horn County, Montana, United States of America
| Population | 3,705 |
| Coordinates | 45.7324800, -107.6120300 |
| Altitude | 886 |
| 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: 451 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 20m |
| 40 mph (64.37 km/h) | 07h 00m |
| 50 mph (80.47 km/h) | 05h 36m |
| 60 mph (96.56 km/h) | 04h 40m |
| 70 mph (112.65 km/h) | 04h 00m |
| 80 mph (129 km/h) | 03h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $38.50 | $77.00 |
| Mid-grade | $4.23 | $41.84 | $83.69 |
| Premium | $4.55 | $44.99 | $89.98 |
| Diesel | $5.41 | $53.52 | $107.05 |
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.