How far is Sun Valley, ID from Caldwell, ID?
The driving distance from Sun Valley, ID to Caldwell, ID is about 178.8 miles (287.8 km), with a travel time of about 03h 04m by car.
- The straight-line flight distance is about 116.8 miles (187.9 km).
- For a round trip, plan for roughly 06h 08m 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 04m.
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 Elmore, Idaho, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Snow Showers
Driving Route Map
The map below follows the saved road route between Sun Valley and Caldwell.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sun Valley and Caldwell.
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1
Start on Inn Entry Lane
88 m · 13 sec · Inn Entry Lane
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2
Turn left onto Moritz Road
851 ft · 42 sec · Moritz Road
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3
At the end of the road, turn left onto Sun Valley Road
1.5 mi · 4 min · Sun Valley Road
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4
Turn left onto North Main Street
26.2 mi · 39 min · North Main Street
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5
Turn right onto Idaho Medal of Honor Highway
41.7 mi · 48 min · Idaho Medal of Honor Highway
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6
Continue on Sun Valley Highway
40.8 mi · 47 min · Sun Valley Highway
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7
Take the ramp right toward I 84 West, US 20 West, US 26 West, US 30 West: Boise
1266 ft · 31 sec · Idaho Medal of Honor Highway
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8
Merge slight left onto Vietnam Veterans Memorial Highway
63 mi · 1 hr 4 min · Vietnam Veterans Memorial Highway
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9
Continue straight
3 mi · 3 min
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10
Take the exit slight right toward US 20, US 26 East
1207 ft · 36 sec
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11
Turn left onto Franklin Road
2268 ft · 53 sec · Franklin Road
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12
Continue on North 21st Avenue
3239 ft · 1 min · North 21st Avenue
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13
Turn right onto Blaine Street
1.3 km · 2 min · Blaine Street
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14
Turn left onto South 10th Avenue
51 m · 10 sec · South 10th Avenue
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15
Turn left
21 m · 7 sec
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16
Turn right
24 m · 6 sec
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17
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Sun Valley and Caldwell.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Vietnam Veterans Memorial Highway
Merge slight left onto Vietnam Veterans Memorial Highway
63 mi · 01h 04m
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 Slight Chance Snow Showers leaving Sun Valley and Sunny near Caldwell.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sun Valley to Caldwell?
The road trip is about 178.8 miles (287.8 km) and usually takes 03h 04m 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?
Mountain Home is a useful midpoint, sitting about 89.2 miles from Sun Valley and 89.5 miles from Caldwell.
How much longer is the road route than the straight-line distance?
The direct path is about 116.8 miles (187.9 km), while the road route adds roughly 62 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 10:52 AM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.56 one way or $49.13 round trip. Estimated CO2 is about 56.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Snow Showers around Sun Valley and Sunny near Caldwell.
Stop Ideas Near Mountain Home
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 Mountain Home.
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Twin Falls, Idaho
Flight Path Map
This map shows the direct air route between Sun Valley and Caldwell. Straight-line distance: 116.73 mi (187.86 km).
#1 Sun Valley
Resort city in Blaine County, Idaho, United States
| Population | 1,486 |
| Coordinates | 43.6971300, -114.3517200 |
| Altitude | 1812 |
| 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: 288 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 57m |
| 40 mph (64.37 km/h) | 04h 28m |
| 50 mph (80.47 km/h) | 03h 34m |
| 60 mph (96.56 km/h) | 02h 58m |
| 70 mph (112.65 km/h) | 02h 33m |
| 80 mph (129 km/h) | 02h 13m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.89 | $24.56 | $49.13 |
| Mid-grade | $4.23 | $26.70 | $53.40 |
| Premium | $4.55 | $28.70 | $57.41 |
| Diesel | $5.41 | $34.15 | $68.30 |
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.