How far is Boise, ID from Saint Maries, ID?
The driving distance from Boise, ID to Saint Maries, ID is about 344.2 miles (554 km), with a travel time of about 07h 51m by car.
- The straight-line flight distance is about 256.3 miles (412.5 km).
- For a round trip, plan for roughly 15h 42m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 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 07h 51m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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 Idaho County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Light Rain
Driving Route Map
The map below follows the saved road route between Boise and Saint Maries.
Turn-by-Turn Driving Directions
Step-by-step road directions between Boise and Saint Maries.
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1
Start on the route
36 m · 14 sec
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2
Turn left
39 m · 11 sec
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3
At the end of the road, turn right onto South Capitol Boulevard
849 ft · 34 sec · South Capitol Boulevard
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4
Turn left onto West Idaho Street
3037 ft · 1 min · West Idaho Street
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5
Turn right onto North 15th Street
1019 ft · 30 sec · North 15th Street
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6
Turn left onto West State Street
1.4 km · 2 min · West State Street
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7
Continue on West State Street
656 ft · 20 sec · West State Street
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8
Keep slight left to continue on West State Street
6.1 mi · 11 min · West State Street
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9
Take the ramp slight right toward SH-55
156 m · 14 sec
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10
Merge slight left onto North Horseshoe Bend Road
8.8 mi · 12 min · North Horseshoe Bend Road
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11
Continue on Payette River Scenic Byway
5.9 mi · 7 min · Payette River Scenic Byway
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12
Continue on Highway 55
2.4 mi · 3 min · Highway 55
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13
Continue on Horseshoe Bend Road
2105 ft · 30 sec · Horseshoe Bend Road
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14
Continue on Highway 55
16 mi · 24 min · Highway 55
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15
Continue on Horseshoe Bend Road
18.5 mi · 25 min · Horseshoe Bend Road
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16
Continue on Main Street
45.6 mi · 1 hr 2 min · Main Street
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17
Turn left onto Deinhard Lane
1.6 mi · 3 min · Deinhard Lane
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18
Continue on Boydstun Street
1.5 km · 2 min · Boydstun Street
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19
At the end of the road, turn left onto West Lake Street
10.6 mi · 16 min · West Lake Street
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20
Turn right onto North Norris Avenue
76.4 mi · 1 hr 27 min · North Norris Avenue
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21
Turn left onto Johnston Road
2.2 mi · 5 min · Johnston Road
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22
At the end of the road, turn left
59.9 mi · 1 hr 10 min
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23
Take the exit slight right toward US 12 East
1345 ft · 57 sec
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24
Merge slight left
4.1 mi · 5 min
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25
Turn left onto State Highway 3
48 m · 7 sec · State Highway 3
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26
Continue on State Highway 3
6.3 mi · 11 min · State Highway 3
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27
Continue on Highway 3
2.4 mi · 4 min · Highway 3
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28
Continue on Main Street
2971 ft · 1 min · Main Street
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29
Continue on Highway 3
2.9 mi · 5 min · Highway 3
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30
Continue on Main Street
1.2 mi · 2 min · Main Street
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31
Continue on Highway 3
14.9 mi · 20 min · Highway 3
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32
Continue on Wyoming Street
2116 ft · 56 sec · Wyoming Street
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33
At the end of the road, turn left onto 2nd Avenue
3005 ft · 2 min · 2nd Avenue
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34
Continue on State Highway 8
992 ft · 18 sec · State Highway 8
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35
Turn right onto State Highway 9
13.4 mi · 18 min · State Highway 9
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36
At the end of the road, turn right onto State Highway 6
7.7 mi · 10 min · State Highway 6
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37
Continue on ID-6
9.3 mi · 16 min · ID-6
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38
Continue on State Highway 6
8 mi · 14 min · State Highway 6
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39
Keep slight left to continue on State Highway 6
1120 ft · 22 sec · State Highway 6
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40
Turn straight onto Highway 3 South
14.3 mi · 25 min · Highway 3 South
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41
Continue on East College Avenue
753 ft · 22 sec · East College Avenue
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42
Turn left onto South 3rd Street
110 m · 18 sec · South 3rd Street
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43
Turn right onto West Jefferson Avenue
15 m · 2 sec · West Jefferson Avenue
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44
Arrive at your destination
0 m · 1 sec · West Jefferson Avenue
Car Route Details
A richer read on the saved driving route between Boise and Saint Maries.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
North Norris Avenue
Turn right onto North Norris Avenue
76.4 mi · 01h 27m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Sunny leaving Boise and Slight Chance Light Rain near Saint Maries.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Boise to Saint Maries?
The road trip is about 344.2 miles (554 km) and usually takes 07h 51m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
White Bird is a useful midpoint, sitting about 172 miles from Boise and 172.2 miles from Saint Maries.
How much longer is the road route than the straight-line distance?
The direct path is about 256.3 miles (412.5 km), while the road route adds roughly 87.9 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 7:30 AM MDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $47.30 one way or $94.60 round trip. Estimated CO2 is about 108 kg one way.
Do you cross a time zone on this route?
Yes. There is about a 1 hour time difference between Boise and Saint Maries, so arrival and return times should be read in local time.
What should you check before leaving?
Before you leave, expect Sunny around Boise and Slight Chance Light Rain near Saint Maries.
Stop Ideas Near White Bird
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 White Bird.
Grangeville, Idaho
Lewiston, Idaho
McCall, Idaho
Flight Path Map
This map shows the direct air route between Boise and Saint Maries. Straight-line distance: 256.3 mi (412.47 km).
#1 Boise
The capital of Idaho.
| Population | 228,959 |
| Coordinates | 43.6135000, -116.2034500 |
| Altitude | 823 |
| Country | United States |
#2 Saint Maries
River in the United States of America
| Population | 2,448 |
| Coordinates | 47.3143500, -116.5626700 |
| Altitude | 668 |
| Country | United States |
End: Saint Maries (-116.56267, 47.31435)
Estimated Travel Time
Distance: 554 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 28m |
| 40 mph (64.37 km/h) | 08h 36m |
| 50 mph (80.47 km/h) | 06h 53m |
| 60 mph (96.56 km/h) | 05h 44m |
| 70 mph (112.65 km/h) | 04h 55m |
| 80 mph (129 km/h) | 04h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $47.30 | $94.60 |
| Mid-grade | $4.23 | $51.41 | $102.81 |
| Premium | $4.55 | $55.27 | $110.54 |
| Diesel | $5.41 | $65.76 | $131.51 |
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 Idaho · Apr 17, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.