How far is Sioux City, IA from Alton, IA?
The driving distance from Sioux City, IA to Alton, IA is about 41.2 miles (66.3 km), with a travel time of about 00h 55m by car.
- The straight-line flight distance is about 39.1 miles (62.9 km).
- For a round trip, plan for roughly 01h 50m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 55m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 Plymouth County, Iowa
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Sioux City and Alton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sioux City and Alton.
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1
Start on the route
35 m · 14 sec
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2
Turn left onto 9th Street
990 ft · 49 sec · 9th Street
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3
Turn left onto Court Street
793 ft · 27 sec · Court Street
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4
Turn right onto 11th Street
1.1 km · 2 min · 11th Street
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5
Turn left
1128 ft · 28 sec
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6
Continue on Terminal Drive
2076 ft · 53 sec · Terminal Drive
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7
Turn right onto 18th Street
73 m · 9 sec · 18th Street
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8
Turn left
3.3 mi · 5 min
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9
Take the ramp straight
21 mi · 26 min
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10
Continue on IA 60 North: Sheldon
13.2 mi · 15 min
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11
Take the exit slight right toward Alton
2542 ft · 1 min
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12
At the end of the road, turn right onto 3rd Avenue
1.5 mi · 3 min · 3rd Avenue
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13
Turn left onto West 10th Street
48 m · 9 sec · West 10th Street
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14
Turn right
34 m · 8 sec
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15
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Sioux City and Alton.
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.
18th Street
Take the ramp straight
21 mi · 00h 26m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Chance Rain Showers leaving Sioux City and Chance Rain Showers near Alton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sioux City to Alton?
The road trip is about 41.2 miles (66.3 km) and usually takes 00h 55m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Merrill is a useful midpoint, sitting about 20.6 miles from Sioux City and 20.6 miles from Alton.
How much longer is the road route than the straight-line distance?
The direct path is about 39.1 miles (62.9 km), while the road route adds roughly 2.1 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 4:40 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.47 one way or $10.94 round trip. Estimated CO2 is about 12.9 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Sioux City and Chance Rain Showers near Alton.
Flight Path Map
This map shows the direct air route between Sioux City and Alton. Straight-line distance: 39.06 mi (62.86 km).
#1 Sioux City
The second most populous city in Iowa.
| Population | 82,651 |
| Coordinates | 42.4999900, -96.4003100 |
| Altitude | 366 |
| Country | United States |
#2 Alton
Human settlement in Sioux County, Iowa, United States of America
| Population | 1,249 |
| Coordinates | 42.9874900, -96.0105700 |
| Altitude | 404 |
| Country | United States |
End: Alton (-96.01057, 42.98749)
Estimated Travel Time
Distance: 66 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 22m |
| 40 mph (64.37 km/h) | 01h 01m |
| 50 mph (80.47 km/h) | 00h 49m |
| 60 mph (96.56 km/h) | 00h 41m |
| 70 mph (112.65 km/h) | 00h 35m |
| 80 mph (129 km/h) | 00h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $5.47 | $10.94 |
| Mid-grade | $4.25 | $6.17 | $12.33 |
| Premium | $4.65 | $6.75 | $13.50 |
| Diesel | $5.30 | $7.69 | $15.38 |
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 Iowa · Apr 15, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.