How far is Cromwell, IA from Thayer, MO?
The driving distance from Cromwell, IA to Thayer, MO is about 479.5 miles (771.7 km), with a travel time of about 09h 25m by car.
- The straight-line flight distance is about 349.4 miles (562.3 km).
- For a round trip, plan for roughly 18h 50m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 AM CDT.
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 09h 25m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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 Henry County, Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Cromwell and Thayer.
Turn-by-Turn Driving Directions
Step-by-step road directions between Cromwell and Thayer.
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1
Start on East 12th Street
12 m · 7 sec · East 12th Street
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2
Turn left onto Monroe Avenue
1408 ft · 1 min · Monroe Avenue
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3
At the end of the road, turn right onto County Road H33
1328 ft · 36 sec · County Road H33
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4
Continue on Cromwell Road
3.8 mi · 9 min · Cromwell Road
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5
Turn left onto New York Avenue
1 km · 58 sec · New York Avenue
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6
Continue on West Taylor Street
30.8 mi · 43 min · West Taylor Street
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7
Take the ramp right toward I-35 south: Kansas City
1451 ft · 35 sec
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8
Merge slight left
133.9 mi · 2 hr 24 min
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9
Take the exit slight right toward I 435 South: Saint Louis
1.1 km · 1 min
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10
Merge slight left
9.5 mi · 11 min
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11
Keep slight left to continue on Lamar Hunt Memorial Highway
8.9 mi · 10 min · Lamar Hunt Memorial Highway
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12
Take the exit slight right toward I 49 South, US 71 South, I 470 East, US 50 East: Joplin, Lee's Summit
1.1 km · 46 sec
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13
Keep slight left to continue on I 49, I 470, US 50 East, US 71 South: Joplin, Lee's Summit
749 ft · 13 sec
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14
Keep slight left to continue on I 49 South, US 71 South: Joplin
1594 ft · 39 sec
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15
Merge slight left
26 mi · 29 min
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16
Take the exit slight right toward MO 7 South: Clinton
924 ft · 20 sec
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17
Turn slight left onto MO 7 South: Clinton
55.5 mi · 1 hr 4 min
-
18
Continue straight
68 mi · 1 hr 19 min
-
19
Take the exit slight left toward I 44 East: Rolla, Saint Louis
954 ft · 23 sec
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20
Merge slight left onto Payne Stewart Highway
4.3 mi · 5 min · Payne Stewart Highway
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21
Take the exit slight right toward US 65 South: Branson
2343 ft · 50 sec
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22
Merge slight left onto Schoolcraft Freeway
8.3 mi · 10 min · Schoolcraft Freeway
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23
Take the exit slight right toward US 60 East: Cabool
1228 ft · 53 sec
-
24
Merge slight left
82.2 mi · 1 hr 36 min
-
25
Keep slight right to continue on US 63 South: West Plains, Thayer
43.8 mi · 55 min
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26
Take the exit slight right
63 m · 7 sec
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27
Turn straight onto West Walnut Street
788 ft · 24 sec · West Walnut Street
-
28
Turn right onto Front Street
133 m · 19 sec · Front Street
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29
Turn sharp right
23 m · 3 sec
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30
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Cromwell and Thayer.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I-35 south
Merge slight left
134 mi · 02h 24m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Cloudy leaving Cromwell and Mostly Sunny then Chance Rain Showers near Thayer.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Cromwell to Thayer?
The road trip is about 479.5 miles (771.7 km) and usually takes 09h 25m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Urich is a useful midpoint, sitting about 239.6 miles from Cromwell and 239.8 miles from Thayer.
How much longer is the road route than the straight-line distance?
The direct path is about 349.4 miles (562.3 km), while the road route adds roughly 130.1 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 6:00 AM to 7:30 AM CDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $70.76 one way or $141.52 round trip. Estimated CO2 is about 150.4 kg one way.
What should you check before leaving?
Before you leave, expect Cloudy around Cromwell and Mostly Sunny then Chance Rain Showers near Thayer.
Stop Ideas Near Urich
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 Urich.
Warrensburg
Lee's Summit
Sedalia
Independence
Flight Path Map
This map shows the direct air route between Cromwell and Thayer. Straight-line distance: 349.38 mi (562.28 km).
#1 Cromwell
City in Iowa, United-States
| Population | 105 |
| Coordinates | 41.0394300, -94.4619100 |
| Altitude | 392 |
| Country | United States |
End: Thayer (-91.5382, 36.52451)
Estimated Travel Time
Distance: 772 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 15h 58m |
| 40 mph (64.37 km/h) | 11h 59m |
| 50 mph (80.47 km/h) | 09h 35m |
| 60 mph (96.56 km/h) | 07h 59m |
| 70 mph (112.65 km/h) | 06h 51m |
| 80 mph (129 km/h) | 05h 58m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.18 | $70.76 | $141.52 |
| Mid-grade | $4.47 | $75.56 | $151.13 |
| Premium | $5.08 | $86.00 | $172.01 |
| Diesel | $6.07 | $102.70 | $205.41 |
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 · Oct 16, 2026