How far is Seeley Lake, MT from Saint Mary, MT?
The driving distance from Seeley Lake, MT to Saint Mary, MT is about 197.2 miles (317.3 km), with a travel time of about 03h 52m by car.
- The straight-line flight distance is about 108.1 miles (174 km).
- For a round trip, plan for roughly 07h 45m 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 03h 52m.
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.
Town in Montana, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Widespread Frost then Sunny
Mostly Clear
Driving Route Map
The map below follows the saved road route between Seeley Lake and Saint Mary.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seeley Lake and Saint Mary.
-
1
Start on the route
76.3 mi · 1 hr 25 min
-
2
At the end of the road, turn right
11.4 mi · 13 min
-
3
Continue straight
61 m · 7 sec
-
4
Turn right
9.7 mi · 12 min
-
5
At the end of the road, turn right onto US 2
1.7 mi · 2 min · US 2
-
6
Continue on US Route 2
67.8 mi · 1 hr 17 min · US Route 2
-
7
Turn left onto Looking Glass Road
8.1 mi · 14 min · Looking Glass Road
-
8
Continue on Looking Glass Hill Road
3.6 mi · 6 min · Looking Glass Hill Road
-
9
Turn left
18.4 mi · 22 min
-
10
Turn left onto Going-to-the-Sun Road
85 m · 13 sec · Going-to-the-Sun Road
-
11
Turn right
42 m · 10 sec
-
12
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Seeley Lake and Saint Mary.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Longest stretch
Start on the route
76.3 mi · 01h 25m
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.
Widespread Frost then Sunny leaving Seeley Lake and Mostly Clear near Saint Mary.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seeley Lake to Saint Mary?
The road trip is about 197.2 miles (317.3 km) and usually takes 03h 52m 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?
Columbia Falls is a useful midpoint, sitting about 98.5 miles from Seeley Lake and 98.7 miles from Saint Mary.
How much longer is the road route than the straight-line distance?
The direct path is about 108.1 miles (174 km), while the road route adds roughly 89.1 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 9:14 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $31.28 one way or $62.56 round trip. Estimated CO2 is about 61.9 kg one way.
What should you check before leaving?
Before you leave, expect Widespread Frost then Sunny around Seeley Lake and Mostly Clear near Saint Mary.
Stop Ideas Near Columbia Falls
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 Columbia Falls.
Whitefish station
West Glacier
Essex
East Glacier Park
Flight Path Map
This map shows the direct air route between Seeley Lake and Saint Mary. Straight-line distance: 108.12 mi (174.01 km).
#1 Seeley Lake
Census designated place in Montana, USA
| Population | 1,659 |
| Coordinates | 47.1793800, -113.4845200 |
| Altitude | 1225 |
| Country | United States |
#2 Saint Mary
Situated at the eastern boundary of Glacier National Park in Glacier County, Montana, this unincorporated community lies along the shore of Saint Mary Lake at an elevation of 4551 feet.
| Population | 0 |
| Coordinates | 48.7438700, -113.4295500 |
| Altitude | 1387 |
| Country | United States |
End: Saint Mary (-113.42955, 48.74387)
Estimated Travel Time
Distance: 317 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 34m |
| 40 mph (64.37 km/h) | 04h 55m |
| 50 mph (80.47 km/h) | 03h 56m |
| 60 mph (96.56 km/h) | 03h 17m |
| 70 mph (112.65 km/h) | 02h 48m |
| 80 mph (129 km/h) | 02h 27m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.49 | $31.28 | $62.56 |
| Mid-grade | $4.83 | $33.58 | $67.16 |
| Premium | $5.19 | $36.14 | $72.29 |
| Diesel | $6.11 | $42.53 | $85.05 |
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 · Oct 15, 2026