How far is Decatur, IL from Rock Island, IL?
The driving distance from Decatur, IL to Rock Island, IL is about 187.2 miles (301.2 km), with a travel time of about 03h 33m by car.
- The straight-line flight distance is about 143.4 miles (230.7 km).
- For a round trip, plan for roughly 07h 07m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 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 03h 33m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
Village in Illinois, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Decatur and Rock Island.
Turn-by-Turn Driving Directions
Step-by-step road directions between Decatur and Rock Island.
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1
Start on East Wood Street
155 m · 23 sec · East Wood Street
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2
Turn left onto South Franklin Street
2129 ft · 46 sec · South Franklin Street
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3
Continue on North Water Street
27.4 mi · 37 min · North Water Street
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4
Continue on North 1450 East Road
14.7 mi · 18 min · North 1450 East Road
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5
Take the exit slight right toward I 74 West, US 51 North: Peoria, Rockford
8 mi · 9 min
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6
Take the exit slight right toward I 74 West: Peoria
28.4 mi · 31 min
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7
Keep slight left to continue on I 474 West: Moline, Rock Island
14 mi · 15 min
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8
Take the exit slight left toward I 74 West: Moline, Rock Island
1 mi · 1 min
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9
Merge slight right
72.4 mi · 1 hr 18 min
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10
Keep slight right to continue on I 74 West, I 280 West: Moline, Rock Island
9.5 mi · 11 min
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11
Keep slight left to continue on I 280 West: Des Moines
6.7 mi · 7 min
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12
Take the exit slight right toward IL 92 East: Rock Island
2846 ft · 1 min
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13
Merge slight left onto Centennial Expressway
3.6 mi · 4 min · Centennial Expressway
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14
Continue on 1st Avenue
631 ft · 18 sec · 1st Avenue
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15
Turn right onto 16th Street
804 ft · 29 sec · 16th Street
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16
Turn right onto 3rd Avenue
121 m · 16 sec · 3rd Avenue
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17
Turn right onto 15th Street
20 m · 2 sec · 15th Street
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18
Arrive at your destination
0 m · 1 sec · 15th Street
Car Route Details
A richer read on the saved driving route between Decatur and Rock Island.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 74 West
Merge slight right
72.4 mi · 01h 18m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Sunny leaving Decatur and Mostly Sunny then Slight Chance Showers And Thunderstorms near Rock Island.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Decatur to Rock Island?
The road trip is about 187.2 miles (301.2 km) and usually takes 03h 33m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Bellevue is a useful midpoint, sitting about 93.6 miles from Decatur and 93.6 miles from Rock Island.
How much longer is the road route than the straight-line distance?
The direct path is about 143.4 miles (230.7 km), while the road route adds roughly 43.8 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 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 9:52 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $24.89 one way or $49.78 round trip. Estimated CO2 is about 58.7 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Decatur and Mostly Sunny then Slight Chance Showers And Thunderstorms near Rock Island.
Stop Ideas Near Bellevue
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 Bellevue.
Peoria, Illinois
Uptown Station
Galesburg station
Lincoln
Flight Path Map
This map shows the direct air route between Decatur and Rock Island. Straight-line distance: 143.32 mi (230.65 km).
#1 Decatur
The most populous city in Macon County, Illinois.
| Population | 70,007 |
| Coordinates | 39.8403100, -88.9548000 |
| Altitude | 205 |
| Country | United States |
#2 Rock Island
City in Illinois
| Population | 36,870 |
| Coordinates | 41.5094800, -90.5787500 |
| Altitude | 171 |
| Country | United States |
End: Rock Island (-90.57875, 41.50948)
Estimated Travel Time
Distance: 301 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 14m |
| 40 mph (64.37 km/h) | 04h 40m |
| 50 mph (80.47 km/h) | 03h 44m |
| 60 mph (96.56 km/h) | 03h 07m |
| 70 mph (112.65 km/h) | 02h 40m |
| 80 mph (129 km/h) | 02h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $24.89 | $49.78 |
| Mid-grade | $4.25 | $28.07 | $56.14 |
| Premium | $4.65 | $30.72 | $61.43 |
| Diesel | $5.30 | $35.01 | $70.01 |
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 Illinois · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.