How far is Sidney, MT from Warm Springs, MT?
The driving distance from Sidney, MT to Warm Springs, MT is about 517.8 miles (833.3 km), with a travel time of about 08h 43m by car.
- The straight-line flight distance is about 420.3 miles (676.4 km).
- For a round trip, plan for roughly 17h 26m 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 08h 43m.
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.
Human settlement in Yellowstone County, Montana, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Sidney and Warm Springs.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sidney and Warm Springs.
-
1
Start on North Central Avenue
2.5 mi · 3 min · North Central Avenue
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2
Enter the roundabout and take exit 2 toward the route
41 m · 2 sec
-
3
Exit the roundabout
48.9 mi · 56 min
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4
Take the exit right
1385 ft · 34 sec
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5
Merge slight left
212.8 mi · 3 hr 31 min
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6
Merge slight left
2.8 mi · 3 min
-
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
113.4 mi · 1 hr 54 min
-
10
Keep slight left to continue on I 90 West: Missoula
17 mi · 16 min
-
11
Take the exit slight right toward Warm Springs
1524 ft · 44 sec
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12
Turn left onto Gas City Road
156 m · 9 sec · Gas City Road
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13
Arrive at your destination
0 m · 1 sec · Gas City Road
Car Route Details
A richer read on the saved driving route between Sidney and Warm Springs.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
North Central Avenue
Merge slight left
213 mi · 03h 31m
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.
Mostly Clear leaving Sidney and Sunny near Warm Springs.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sidney to Warm Springs?
The road trip is about 517.8 miles (833.3 km) and usually takes 08h 43m 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?
Lockwood is a useful midpoint, sitting about 258.4 miles from Sidney and 259.4 miles from Warm Springs.
How much longer is the road route than the straight-line distance?
The direct path is about 420.3 miles (676.4 km), while the road route adds roughly 97.5 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 $82.11 one way or $164.21 round trip. Estimated CO2 is about 162.4 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Clear around Sidney and Sunny near Warm Springs.
Stop Ideas Near Lockwood
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 Lockwood.
Billings, MT
Flight Path Map
This map shows the direct air route between Sidney and Warm Springs. Straight-line distance: 420.32 mi (676.44 km).
#1 Sidney
City in Montana, United States
| Population | 6,297 |
| Coordinates | 47.7166800, -104.1563300 |
| Altitude | 594 |
| Country | United States |
#2 Warm Springs
Situated in southwestern Montana's Deer Lodge Valley at an elevation of 4,813 feet, this unincorporated community is part of Deer Lodge County.
| Population | 0 |
| Coordinates | 46.1813100, -112.7847600 |
| Altitude | 1467 |
| Country | United States |
End: Warm Springs (-112.78476, 46.18131)
Estimated Travel Time
Distance: 833 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 17h 15m |
| 40 mph (64.37 km/h) | 12h 56m |
| 50 mph (80.47 km/h) | 10h 21m |
| 60 mph (96.56 km/h) | 08h 37m |
| 70 mph (112.65 km/h) | 07h 23m |
| 80 mph (129 km/h) | 06h 27m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.49 | $82.11 | $164.21 |
| Mid-grade | $4.83 | $88.15 | $176.31 |
| Premium | $5.19 | $94.88 | $189.75 |
| Diesel | $6.11 | $111.63 | $223.26 |
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