The drive from Bozeman, MT to Glasgow, MT covers 375.8 miles and takes about 7h 56m behind the wheel.
This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on US 191, I 90, East 1st Avenue for much of the mileage,
and the overall profile is highway-focused drive.
The longest uninterrupted segment is about 130.1 miles on US 191.
At current regular gas prices, budget about $59.55 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
2 planned breaks
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
187.9 miles from Bozeman, MT
A natural place for your longest stop of the day
, about 3h 43m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 7h 56m. Total distance: 375.8 miles.
Family Friendly
Moderate complexity with 2 natural rest stops along the way.
This is a 7h 56m highway drive covering 375.8 miles, with most of the trip on US 191 and I 90. The longest continuous stretch is about 130.1 miles on US 191.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 25 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
US 191 is the longest continuous segment at about 130.1 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on US 191 and I 90. There are only a few real navigation decisions along the way. The trickiest moment comes early in the drive near I 90 Business; US 191; MT 84 / West Main Street.
Driving Effort4/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
The route itself is not hard, but at 7h 56m, endurance matters. Plan breaks every 2-3 hours. The 14 decision points are all manageable with basic attention.
Where does it get tricky?
The main spots that need attention: near the start (I 90 Business; US 191; MT 84 / West Main Street): Navigation decision point; at 1.4 miles: Exit ramp - move to the correct lane early; at 59.1 miles (I 90 Business; US 191): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 14 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
4
0 mi into trip|~0m in|I 90 Business; US 191; MT 84 / West Main Street
Turn left onto I 90 Business; US 191; MT 84 / West Main Street
Navigation decision point
4
1.4 mi into trip|~3m in
Take the exit
Exit ramp - move to the correct lane early
5
59.1 mi into trip|~59m in|I 90 Business; US 191
Take the exit onto I 90 Business; US 191 toward US 191, I 90 Business: Big Timber, Harlowton
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 191, I 90 Business: Big Timber, Harlo...
5
59.4 mi into trip|~1h in|I 90 Business; US 191
Turn left onto I 90 Business; US 191
Navigation decision point
5
145.4 mi into trip|~2h 54m in|US 87; US 191; MT 200
At end of road, turn right onto US 87; US 191; MT 200
Navigation decision point
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Bozeman, MT to Glasgow, MT, road signs begin pointing toward Harlowton along the way.
Harlowton
59.1 mi in|~59m|via I 90 Business; US 191
Main Roads
Road
Distance
Duration
US 191
130.1 mi
2h 57m
I 90
57.4 mi
55m
East 1st Avenue
43.9 mi
1h 5m
North 1st Street East
40.8 mi
47m
1st Avenue North
29.4 mi
33m
US Highway 87
29.1 mi
31m
MT 19
21.5 mi
31m
US 87
14.7 mi
15m
Longest stretch:
US 191
— 130.1 mi, about 2h 57m
Turn-by-Turn Driving Directions
Step-by-step road directions between Bozeman, MT and Glasgow, MT.
1
Start on North Willson Avenue
130 ft·11 sec·North Willson Avenue
2
Turn left onto I 90 Business; US 191; MT 84
1.4 mi·3 min·West Main Street
3
Take the exit
0.3 mi·43 sec
4
Merge onto I 90; US 191
23 mi·23 min·I 90; US 191
5
Continue on I 90; US 89; US 191
6.9 mi·6 min·I 90; US 89; US 191
6
Continue on I 90; US 191
27 mi·25 min·I 90; US 191
7
Take the exit onto I 90 Business; US 191
0.3 mi·42 sec·I 90 Business; US 191
Toward US 191, I 90 Business: Big Timber, Harlowton
8
Turn left onto I 90 Business; US 191
0.2 mi·15 sec·I 90 Business; US 191
9
At end of road, turn right onto I 90 Business; US 191
1.2 mi·2 min·I 90 Business; US 191
10
Keep slight left at fork onto US 191
44 mi·1 hr 5 min·East 1st Avenue
11
Turn right onto US 12; US 191
0.6 mi·57 sec·2nd Street Northwest
12
Continue on US 12; US 191
0.8 mi·1 min·3rd Street Northeast
13
Turn left onto US 191; MT 3
39 mi·42 min·US 191; MT 3
14
At end of road, turn right onto US 87; US 191; MT 200
15 mi·15 min·US 87; US 191; MT 200
15
Turn straight onto US 191
2.6 mi·3 min·Truck Bypass
16
Continue on 1st Avenue North
0.3 mi·37 sec·1st Avenue North
17
Turn left onto US 87; MT 200
0.4 mi·1 min·East Main Street
18
Continue on US 87; MT 200
1.1 mi·2 min·Northeast Main Street
19
Continue on US 87; MT 200
29 mi·31 min·US Highway 87
20
Turn left onto MT 19
21 mi·31 min·MT 19
21
Continue on US 191
91 mi·2 hr 15 min·US 191
22
Turn right onto US 2
41 mi·47 min·North 1st Street East
23
Continue on US 2
29 mi·33 min·1st Avenue North
24
Turn right onto MT 42
38 ft·0 sec·6th Street North
25
Arrive at destination
MT 42
Trip Plan
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 2 meaningful breaks for fuel, food, and rest.
The halfway point lands around 187.9 miles from Bozeman, MT, or about 3h 43m into the drive.
The longest continuous stretch on this route runs about 130.1 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 83 miles or 1h 37m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 187.9 miles or 3h 43m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 6h 48m
Traffic, exits, and arrival timing usually matter more near Glasgow, MT than in the middle of the route.
Before You Leave
+
Open the route before leaving Bozeman, MT so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
+
Pick one backup stop option before the midpoint in case traffic changes your pacing.
Day 1
Settle into the route from Bozeman, MT
This is one driving day of about 375.8 miles and 7h 56m.
Your first comfortable stop window is around 83 miles from Bozeman, MT.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 2 real breaks rather than only quick fuel stops.
The longest stretch is on US 191 for about 130.1 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 187.9 mi from Bozeman, MT
· 3h 43m into the drive
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $39 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
112.7
1
$39.46
$18.04
Efficient EV
94
1
$32.88
$15.03
EV Truck/SUV
150.3
1
$52.61
$24.05
Gas CO2
131 kg
EV CO2
44 kg (66% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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
Bozeman, MT
Morning
in Bozeman on Saturday
Local time
10:13 AM
MDT
Current temp
64°F
Unavailable
Live forecast
Destination
Glasgow, MT
Morning
in Glasgow on Saturday
Local time
10:13 AM
MDT
Current temp
71°F
Unavailable
Live forecast
65°F
Lewistown, MT
188 mi in
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
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
7 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
7h 56m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Bozeman, MT to Glasgow, MT covers 375.8 miles and takes about 7h 56m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are US 191, I 90, East 1st Avenue. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 187.9 miles from Bozeman, MT. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $59.55 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.
Plan about 2 meaningful breaks for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
The route itself is not hard, but at 7h 56m, endurance matters. Plan breaks every 2-3 hours. The 14 decision points are all manageable with basic attention.
The main spots that need attention: near the start (I 90 Business; US 191; MT 84 / West Main Street): Navigation decision point; at 1.4 miles: Exit ramp - move to the correct lane early; at 59.1 miles (I 90 Business; US 191): Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
On the drive from Bozeman, MT to Glasgow, MT, road signs begin pointing toward Harlowton along the way.
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, EIA for fuel prices, NREL for EV charging, and NPS for national parks. See our methodology for refresh cadence and limitations.
