How far is Marshalltown, IA from Johnston, IA?
The driving distance from Marshalltown, IA to Johnston, IA is about 53.9 miles (86.7 km), with a travel time of about 01h 09m by car.
- The straight-line flight distance is about 48.2 miles (77.6 km).
- For a round trip, plan for roughly 02h 18m 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 01h 09m.
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.
Human settlement in Jasper County, Iowa, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Partly Sunny
Driving Route Map
The map below follows the saved road route between Marshalltown and Johnston.
Turn-by-Turn Driving Directions
Step-by-step road directions between Marshalltown and Johnston.
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1
Start on North 3rd Avenue
31 m · 6 sec · North 3rd Avenue
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2
Turn right onto East Main Street
2675 ft · 59 sec · East Main Street
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3
Turn left onto South 3rd Street
2231 ft · 46 sec · South 3rd Street
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4
Turn right onto West Madison Street
1644 ft · 33 sec · West Madison Street
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5
Turn straight onto West Lincolnway
2.2 mi · 4 min · West Lincolnway
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6
Continue on Marshalltown Boulevard
2.1 mi · 4 min · Marshalltown Boulevard
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7
Continue straight
35.9 mi · 43 min
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8
Take the exit slight right toward I 80 west, US 65 south: Des Moines
10.6 mi · 13 min
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9
Take the exit slight right toward IA 28 South: Merle Hay Road, Saylorville Lake
1872 ft · 49 sec
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10
Turn right onto Merle Hay Road
1.4 mi · 3 min · Merle Hay Road
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11
Arrive at your destination
0 m · 1 sec · Merle Hay Road
Car Route Details
A richer read on the saved driving route between Marshalltown and Johnston.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Marshalltown Boulevard
Continue straight
35.9 mi · 00h 43m
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.
Mostly Sunny leaving Marshalltown and Partly Sunny near Johnston.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Marshalltown to Johnston?
The road trip is about 53.9 miles (86.7 km) and usually takes 01h 09m 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?
Mingo is a useful midpoint, sitting about 26.9 miles from Marshalltown and 27 miles from Johnston.
How much longer is the road route than the straight-line distance?
The direct path is about 48.2 miles (77.6 km), while the road route adds roughly 5.7 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 4:12 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.16 one way or $14.33 round trip. Estimated CO2 is about 16.9 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Marshalltown and Partly Sunny near Johnston.
Stop Ideas Near Mingo
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 Mingo.
Osceola
Ottumwa station
Flight Path Map
This map shows the direct air route between Marshalltown and Johnston. Straight-line distance: 48.25 mi (77.65 km).
#1 Marshalltown
City in Marshal County, Iowa
| Population | 26,736 |
| Coordinates | 42.0494300, -92.9079800 |
| Altitude | 287 |
| Country | United States |
#2 Johnston
City in Iowa, United States
| Population | 23,092 |
| Coordinates | 41.6730400, -93.6977200 |
| Altitude | 253 |
| Country | United States |
End: Johnston (-93.69772, 41.67304)
Estimated Travel Time
Distance: 87 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 47m |
| 40 mph (64.37 km/h) | 01h 20m |
| 50 mph (80.47 km/h) | 01h 04m |
| 60 mph (96.56 km/h) | 00h 53m |
| 70 mph (112.65 km/h) | 00h 46m |
| 80 mph (129 km/h) | 00h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $7.16 | $14.33 |
| Mid-grade | $4.25 | $8.08 | $16.16 |
| Premium | $4.65 | $8.84 | $17.69 |
| Diesel | $5.30 | $10.08 | $20.16 |
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 · May 07, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.