How far is Melba, ID from Caldwell, ID?
The driving distance from Melba, ID to Caldwell, ID is about 26.2 miles (42.2 km), with a travel time of about 00h 42m by car.
- The straight-line flight distance is about 21.4 miles (34.4 km).
- For a round trip, plan for roughly 01h 25m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM MDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 42m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
The most populous city in Canyon County, Idaho.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain Showers Likely
Partly Sunny
Driving Route Map
The map below follows the saved road route between Melba and Caldwell.
Turn-by-Turn Driving Directions
Step-by-step road directions between Melba and Caldwell.
-
1
Start on the route
22 m · 10 sec
-
2
Turn left onto 4th Street
842 ft · 31 sec · 4th Street
-
3
Continue on Southside Boulevard
1.2 km · 2 min · Southside Boulevard
-
4
Turn left onto Melba Road
2 mi · 4 min · Melba Road
-
5
Turn right onto 12th Avenue South
13.1 mi · 20 min · 12th Avenue South
-
6
Turn left onto 7th Street South
2895 ft · 60 sec · 7th Street South
-
7
Continue on North Yale Street
1990 ft · 40 sec · North Yale Street
-
8
Continue on Northside Boulevard
1.1 mi · 2 min · Northside Boulevard
-
9
Take the ramp slight left
1558 ft · 38 sec
-
10
Merge slight left onto Vietnam Veterans Memorial Highway
5.7 mi · 7 min · Vietnam Veterans Memorial Highway
-
11
Take the exit slight right toward US 20, US 26 East
1207 ft · 36 sec
-
12
Turn left onto Franklin Road
2268 ft · 53 sec · Franklin Road
-
13
Continue on North 21st Avenue
3239 ft · 1 min · North 21st Avenue
-
14
Turn right onto Blaine Street
1.3 km · 2 min · Blaine Street
-
15
Turn left onto South 10th Avenue
51 m · 10 sec · South 10th Avenue
-
16
Turn left
21 m · 7 sec
-
17
Turn right
24 m · 6 sec
-
18
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Melba and Caldwell.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
12th Avenue South
Turn right onto 12th Avenue South
13.1 mi · 00h 20m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Rain Showers Likely leaving Melba 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 Melba to Caldwell?
The road trip is about 26.2 miles (42.2 km) and usually takes 00h 42m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Nampa is a useful midpoint, sitting about 13.1 miles from Melba and 13.1 miles from Caldwell.
How much longer is the road route than the straight-line distance?
The direct path is about 21.4 miles (34.4 km), while the road route adds roughly 4.8 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 7:00 AM to 7:00 PM MDT. If you want a more comfortable same-day return, try to leave by 7:04 PM MDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.22 one way or $8.44 round trip. Estimated CO2 is about 8.2 kg one way.
What should you check before leaving?
Before you leave, expect Rain Showers Likely around Melba and Partly Sunny near Caldwell.
Stop Ideas Near Nampa
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 Nampa.
Nampa, Idaho
Boise, Idaho
Ontario
Vale, Oregon
Flight Path Map
This map shows the direct air route between Melba and Caldwell. Straight-line distance: 21.39 mi (34.42 km).
#1 Melba
City in Canyon County, Idaho, United States
| Population | 558 |
| Coordinates | 43.3754400, -116.5290100 |
| Altitude | 813 |
| 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: Caldwell (-116.68736, 43.66294)
Estimated Travel Time
Distance: 42 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 52m |
| 40 mph (64.37 km/h) | 00h 39m |
| 50 mph (80.47 km/h) | 00h 31m |
| 60 mph (96.56 km/h) | 00h 26m |
| 70 mph (112.65 km/h) | 00h 22m |
| 80 mph (129 km/h) | 00h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.59 | $4.22 | $8.44 |
| Mid-grade | $4.90 | $4.51 | $9.02 |
| Premium | $5.16 | $4.74 | $9.49 |
| Diesel | $6.57 | $6.04 | $12.08 |
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 · Oct 31, 2026