How far is Saint Anthony, ID from Caldwell, ID?
The driving distance from Saint Anthony, ID to Caldwell, ID is about 318.1 miles (512 km), with a travel time of about 05h 10m by car.
- The straight-line flight distance is about 250.4 miles (402.9 km).
- For a round trip, plan for roughly 10h 21m 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 05h 10m.
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.
City in Jerome County, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Chance Showers And Thunderstorms
Partly Sunny
Driving Route Map
The map below follows the saved road route between Saint Anthony and Caldwell.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Anthony and Caldwell.
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1
Start on East Main Street
27 m · 11 sec · East Main Street
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2
Turn left onto South Bridge Street
1202 ft · 26 sec · South Bridge Street
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3
Take the ramp right
2095 ft · 51 sec
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4
Merge slight left onto Idaho Medal of Honor Highway
1.9 mi · 2 min · Idaho Medal of Honor Highway
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5
Continue on Yellowstone Highway
17.2 mi · 18 min · Yellowstone Highway
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6
Continue on Idaho Medal of Honor Highway
15.4 mi · 16 min · Idaho Medal of Honor Highway
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7
Continue on Rigby Highway
3.1 mi · 4 min · Rigby Highway
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8
Merge slight right onto Grandview Drive
575 ft · 14 sec · Grandview Drive
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9
Take the exit slight right toward I 15 South: Arco, Pocatello
1466 ft · 36 sec
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10
Merge slight left onto Veterans Memorial Highway
46.5 mi · 44 min · Veterans Memorial Highway
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11
Take the exit slight right toward I 86 West: Chubbuck, Twin Falls
1 km · 44 sec
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12
Continue straight
62.7 mi · 59 min
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13
Continue on Vietnam Veterans Memorial Highway
192.4 mi · 3 hr 6 min · Vietnam Veterans Memorial Highway
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14
Take the exit slight right toward US 20, US 26 East
1207 ft · 36 sec
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15
Turn left onto Franklin Road
2268 ft · 53 sec · Franklin Road
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16
Continue on North 21st Avenue
3239 ft · 1 min · North 21st Avenue
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17
Turn right onto Blaine Street
1.3 km · 2 min · Blaine Street
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18
Turn left onto South 10th Avenue
51 m · 10 sec · South 10th Avenue
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19
Turn left
21 m · 7 sec
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20
Turn right
24 m · 6 sec
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21
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Saint Anthony and Caldwell.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Vietnam Veterans Memorial Highway
Continue on Vietnam Veterans Memorial Highway
192 mi · 03h 06m
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.
Mostly Sunny then Chance Showers And Thunderstorms leaving Saint Anthony and Partly Sunny near Caldwell.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Anthony to Caldwell?
The road trip is about 318.1 miles (512 km) and usually takes 05h 10m 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?
Hazelton is a useful midpoint, sitting about 171.2 miles from Saint Anthony and 146.9 miles from Caldwell.
How much longer is the road route than the straight-line distance?
The direct path is about 250.4 miles (402.9 km), while the road route adds roughly 67.7 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 6:38 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $43.72 one way or $87.44 round trip. Estimated CO2 is about 99.8 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Chance Showers And Thunderstorms around Saint Anthony and Partly Sunny near Caldwell.
Stop Ideas Near Hazelton
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 Hazelton.
Twin Falls, Idaho
Flight Path Map
This map shows the direct air route between Saint Anthony and Caldwell. Straight-line distance: 250.38 mi (402.95 km).
#1 Saint Anthony
City in and county seat of Fremont County, Idaho, United States
| Population | 3,553 |
| Coordinates | 43.9663000, -111.6821800 |
| Altitude | 1514 |
| Country | United States |
#2 Caldwell
The most populous city in Canyon County, Idaho.
| Population | 58,481 |
| Coordinates | 43.6629400, -116.6873600 |
| Altitude | 724 |
| Country | United States |
End: (-116.687278, 43.66289)
Estimated Travel Time
Distance: 512 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 36m |
| 40 mph (64.37 km/h) | 07h 57m |
| 50 mph (80.47 km/h) | 06h 21m |
| 60 mph (96.56 km/h) | 05h 18m |
| 70 mph (112.65 km/h) | 04h 32m |
| 80 mph (129 km/h) | 03h 58m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $43.72 | $87.44 |
| Mid-grade | $4.23 | $47.51 | $95.03 |
| Premium | $4.55 | $51.09 | $102.17 |
| Diesel | $5.41 | $60.78 | $121.55 |
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 · May 26, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.