How far is Iowa City, IA from Johnston, IA?
The driving distance from Iowa City, IA to Johnston, IA is about 116.3 miles (187.1 km), with a travel time of about 02h 12m by car.
- The straight-line flight distance is about 111.8 miles (180 km).
- For a round trip, plan for roughly 04h 24m 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 02h 12m.
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 Poweshiek County, Iowa, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Rain Showers
Partly Sunny
Driving Route Map
The map below follows the saved road route between Iowa City and Johnston.
Turn-by-Turn Driving Directions
Step-by-step road directions between Iowa City and Johnston.
-
1
Start on South Gilbert Street
1.3 km · 3 min · South Gilbert Street
-
2
Turn slight left onto Kimball Road
145 m · 22 sec · Kimball Road
-
3
Turn right onto North Dubuque Street
1.2 mi · 3 min · North Dubuque Street
-
4
Turn left
2315 ft · 59 sec
-
5
Merge slight left
112 mi · 2 hr 2 min
-
6
Take the exit slight right toward IA 28 South: Merle Hay Road, Saylorville Lake
1872 ft · 49 sec
-
7
Turn right onto Merle Hay Road
1.4 mi · 3 min · Merle Hay Road
-
8
Arrive at your destination
0 m · 1 sec · Merle Hay Road
Car Route Details
A richer read on the saved driving route between Iowa City 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.
North Dubuque Street
Merge slight left
112 mi · 02h 02m
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 Iowa City 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 Iowa City to Johnston?
The road trip is about 116.3 miles (187.1 km) and usually takes 02h 12m 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?
Malcom is a useful midpoint, sitting about 58 miles from Iowa City and 58.3 miles from Johnston.
How much longer is the road route than the straight-line distance?
The direct path is about 111.8 miles (180 km), while the road route adds roughly 4.5 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 2:06 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $15.46 one way or $30.92 round trip. Estimated CO2 is about 36.4 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Iowa City and Partly Sunny near Johnston.
Stop Ideas Near Malcom
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 Malcom.
Ottumwa station
Mount Pleasant
Flight Path Map
This map shows the direct air route between Iowa City and Johnston. Straight-line distance: 111.88 mi (180.05 km).
#1 Iowa City
The most populous city in Johnson County, Iowa.
| Population | 75,130 |
| Coordinates | 41.6611300, -91.5301700 |
| Altitude | 204 |
| 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: 187 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 52m |
| 40 mph (64.37 km/h) | 02h 54m |
| 50 mph (80.47 km/h) | 02h 19m |
| 60 mph (96.56 km/h) | 01h 56m |
| 70 mph (112.65 km/h) | 01h 39m |
| 80 mph (129 km/h) | 01h 27m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $15.46 | $30.92 |
| Mid-grade | $4.25 | $17.44 | $34.87 |
| Premium | $4.65 | $19.08 | $38.16 |
| Diesel | $5.30 | $21.75 | $43.49 |
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.