Origin
Lockwood, MT
Night in Lockwood on Saturday
Local time
10:36 PM
MDT
Current temp
77°F
Unavailable
Live forecast
Trip from Lockwood, MT to Big Sky, MT
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
3h 35m
Distance
197.7 mi
318 km
Drive Score
9/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$31
one way
EV Charging
Unknown
Best Time to Leave
4 AM
3h 23m
★
6 AM
3h 35m
8 AM
4h 0m
10 AM
3h 44m
12 PM
3h 41m
3 PM
3h 45m
5 PM
3h 59m
8 PM
3h 28m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Lockwood, MT
Wikimedia Commons
Big Sky, MT
Alex Moliski
Trip Overview
Lockwood, MT to Big Sky, MT is 197.7 miles and takes about 3h 35m via I 90 and Gallatin Road, with a fuel budget near $31 and enough daylight to finish in a day. This trip takes you across the Mountain West region, staying within Montana for the entire journey. It's a straightforward drive that should feel familiar if you've spent time on major highways. The route is ideal for a single-day excursion, offering a practical way to travel between these two points without the need for an overnight stay.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
98.9 miles from Lockwood, MT
A natural place for your longest stop of the day , about 1h 39m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 90 | 147.4 mi | 2h 26m |
| Gallatin Road | 33.9 mi | 41m |
| Lone Mountain Trail | 7.1 mi | 11m |
| Huffine Lane | 5.3 mi | 7m |
| West Main Street | 1.7 mi | 3m |
| North 7th Avenue | 1.3 mi | 2m |
| Johnson Lane | 0.2 mi | <1m |
| Access | <0.1 mi | <1m |
Longest stretch:
I 90
— 147.4 mi, about 2h 26m
Turn-by-Turn Driving Directions
Step-by-step road directions between Lockwood, MT and Big Sky, MT.
1
Start on Johnson Lane
0.2 mi
·
32 sec
·
Johnson Lane
2
Take the ramp
0.4 mi
·
54 sec
3
Merge onto I 90; US 87; US 212
1.8 mi
·
2 min
·
I 90; US 87; US 212
4
Continue on I 90; US 212
113 mi
·
1 hr 51 min
·
I 90; US 212
5
Continue on I 90; US 89; US 191
7.0 mi
·
6 min
·
I 90; US 89; US 191
6
Continue on I 90; US 191
26 mi
·
26 min
·
I 90; US 191
7
Take the exit
0.3 mi
·
38 sec
Toward MT 205
8
Turn left onto North 7th Avenue
1.3 mi
·
2 min
·
North 7th Avenue
9
At end of road, turn right onto US 191; MT 84
1.7 mi
·
3 min
·
West Main Street
10
Continue on US 191; MT 84
5.3 mi
·
7 min
·
Huffine Lane
Use the left / straight / right lanes.
11
Turn left onto US 191
34 mi
·
41 min
·
Gallatin Road
12
Turn right onto MT 64
7.1 mi
·
11 min
·
Lone Mountain Trail
13
Turn left onto Lone Moose Drive
201 ft
·
6 sec
·
Lone Moose Drive
14
Keep slight right at fork onto Access
513 ft
·
22 sec
·
Access
15
Arrive at destination
Access
Trip Plan
Given the 3h 35m duration, starting your drive from Lockwood in the morning allows ample time to reach Big Sky before evening. The longest stretch without a major turn is 147.4 miles on I 90, so plan your fuel stops accordingly, though the $31 estimated fuel cost suggests this is manageable. With only one recommended stop, you have flexibility; consider a brief break around the midpoint of the I 90 segment. Keep an eye on local road conditions as you approach Big Sky, especially if traveling during seasons with variable weather.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 98.9 miles from Lockwood, MT, or about 1h 39m into the drive.
The longest continuous stretch on this route runs about 147.4 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 43 miles or 43m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 98.9 miles or 1h 39m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 49m
Traffic, exits, and arrival timing usually matter more near Big Sky, MT than in the middle of the route.
Before You Leave
+
Open the route before leaving Lockwood, 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.
Day 1
Settle into the route from Lockwood, MT
This is one driving day of about 197.7 miles and 3h 35m.
Your first comfortable stop window is around 43 miles from Lockwood, MT.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on I 90 for about 147.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
99 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 43 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 98.9 miles from Lockwood, MT, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 90 if your tank is already low. That segment runs about 147.4 miles.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 85 decision points cluster between mile 148 and 197.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
148 mi into trip
|
~2h 28m in
Take the exit toward MT 205
Exit ramp - move to the correct lane early
Toward MT 205
4
149.6 mi into trip
|
~2h 31m in
|
US 191; MT 84 / West Main Street
At end of road, turn right onto US 191; MT 84 / West Main Street
Navigation decision point
4
156.6 mi into trip
|
~2h 42m in
|
US 191 / Gallatin Road
Turn left onto US 191 / Gallatin Road
Navigation decision point
4
197.6 mi into trip
|
~3h 34m in
|
Lone Moose Drive
Turn left onto Lone Moose Drive
Navigation decision point
5
197.6 mi into trip
|
~3h 34m in
|
Access
Keep slight right at fork onto Access
Highway fork - watch signs carefully
Fuel & Cost
Regular Gas
$31.33 one way
$62.66 round trip
$4.03/gal
25.4 MPG avg
69 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.22 | $32.84 | $65.68 |
| premium | $4.53 | $35.27 | $70.53 |
| diesel | $5.61 | $43.65 | $87.30 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$31
Meals
$25–$50
Total
$56–$81
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 69.2 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $21 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 59.3 | 0 | $20.76 | $9.49 |
| Efficient EV | 49.4 | 0 | $17.30 | $7.91 |
| EV Truck/SUV | 79.1 | 0 | $27.68 | $12.65 |
Gas CO2
69 kg
EV CO2
23 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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.
Destination
Big Sky, MT
Night in Big Sky on Saturday
Local time
10:36 PM
MDT
Current temp
34°F
Unavailable
Live forecast
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
43 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
3h 35m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
This drive is primarily highway-focused, with 75% of the journey on major roads like I 90. You'll experience a significant stretch of 147.4 miles on I 90, offering a consistent pace. As you approach your destination, the route transitions to Gallatin Road and then Lone Mountain Trail, introducing more local road characteristics. Expect a mix of faster highway driving and potentially slower, more winding sections as you get closer to Big Sky.
75% highway — fuel and pacing are the main things to plan.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 147.4 mi on I 90.
How Hard Is This Drive?
3/10
This is a straightforward highway drive that stays mostly on I 90 and Gallatin Road. There are only a few real navigation decisions along the way. The trickiest moment comes around 148 miles in.
Driving Effort
3/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 3h 35m drive. You will face about 8 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 148 miles: Exit ramp - move to the correct lane early; at 149.6 miles (US 191; MT 84 / West Main Street): Navigation decision point; at 156.6 miles (US 191 / Gallatin Road): Navigation decision point.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 3h 35m. Total distance: 197.7 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 35m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (75%). Straightforward navigation.
Frequently Asked Questions
The longest stretch is about 147.4 miles on I 90. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
Mostly yes along the main roads, but rural stretches through MT can have sparse or no coverage. Before you leave, download offline Google Maps or Apple Maps for the route, and consider downloading music or podcasts instead of streaming. If you depend on data for navigation, keep a paper backup of the turn-by-turn directions.
The main spots that need attention: at 148 miles: Exit ramp - move to the correct lane early; at 149.6 miles (US 191; MT 84 / West Main Street): Navigation decision point; at 156.6 miles (US 191 / Gallatin Road): Navigation decision point.
Possible but tiring. At 3.6 hours each way, an in-and-out day trip would put you behind the wheel for 7.2 hours — manageable with a long break at Big Sky, MT, but most travelers stay overnight.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, and EIA for fuel prices. See our methodology for refresh cadence and limitations.
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