How far is Prospect Heights, IL from Quincy, IL?
The driving distance from Prospect Heights, IL to Quincy, IL is about 317 miles (510.1 km), with a travel time of about 05h 01m by car.
- The straight-line flight distance is about 234.6 miles (377.5 km).
- For a round trip, plan for roughly 10h 03m 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 05h 01m.
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 McLean County, Illinois, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Prospect Heights and Quincy.
Turn-by-Turn Driving Directions
Step-by-step road directions between Prospect Heights and Quincy.
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1
Start on West Camp McDonald Road
1.4 km · 2 min · West Camp McDonald Road
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2
Turn right onto East Rand Road
1.5 mi · 3 min · East Rand Road
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3
Turn left onto Palatine Road
1.4 mi · 2 min · Palatine Road
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4
Take the exit slight right toward IL 53 South
1330 ft · 33 sec
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5
Merge slight left
3.2 mi · 4 min
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6
Keep slight left to continue on I 290 East: Chicago, Biesterfield Road
7 mi · 9 min
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7
Keep slight left to continue on I 355 South Tollway: Joliet
20.1 mi · 25 min
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8
Take the exit slight right toward I 55 South: Joliet Road, Saint Louis
1453 ft · 36 sec
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9
Keep slight left to continue on Joliet Road South
1965 ft · 48 sec
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10
Keep slight left to continue on I 55 South: Saint Louis
706 ft · 17 sec
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11
Merge slight left onto Adlai Stevenson Expressway
111.5 mi · 2 hr 3 min · Adlai Stevenson Expressway
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12
Keep slight right to continue on I 55 South: Saint Louis, Springfield
64.8 mi · 1 hr 10 min
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13
Keep slight right to continue on I 72 West, US 36 West: Jacksonville
92.9 mi · 1 hr 40 min
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14
Keep slight left to continue on I 172 North: Quincy
1.3 km · 51 sec
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15
Continue on Chicago-Kansas City Expressway
2.2 mi · 2 min · Chicago-Kansas City Expressway
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16
Take the exit slight right toward IL 57: Marblehead, Quincy
2698 ft · 1 min
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17
Turn left
11.8 mi · 21 min
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18
Turn left
2248 ft · 43 sec
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19
Turn right
22 m · 2 sec
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20
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Prospect Heights and Quincy.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Adlai Stevenson Expressway
Merge slight left onto Adlai Stevenson Expressway
112 mi · 02h 03m
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 Prospect Heights and Sunny near Quincy.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Prospect Heights to Quincy?
The road trip is about 317 miles (510.1 km) and usually takes 05h 01m 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?
McLean is a useful midpoint, sitting about 160 miles from Prospect Heights and 157 miles from Quincy.
How much longer is the road route than the straight-line distance?
The direct path is about 234.6 miles (377.5 km), while the road route adds roughly 82.4 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 6:56 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $42.20 one way or $84.39 round trip. Estimated CO2 is about 99.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Prospect Heights and Sunny near Quincy.
Stop Ideas Near McLean
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Route 66 Original Alignment- Driveable!
City of Lincoln
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to McLean.
Lincoln
Uptown Station
Peoria, Illinois
Springfield station
Flight Path Map
This map shows the direct air route between Prospect Heights and Quincy. Straight-line distance: 234.56 mi (377.49 km).
#1 Prospect Heights
City in Cook County, Illinois, United States
| Population | 15,702 |
| Coordinates | 42.0953000, -87.9375700 |
| Altitude | 204 |
| Country | United States |
#2 Quincy
County seat of Adams County, Illinois, United States
| Population | 39,589 |
| Coordinates | 39.9356000, -91.4098700 |
| Altitude | 173 |
| Country | United States |
End: Broadway Street (-91.40987, 39.935697)
Estimated Travel Time
Distance: 510 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 33m |
| 40 mph (64.37 km/h) | 07h 55m |
| 50 mph (80.47 km/h) | 06h 20m |
| 60 mph (96.56 km/h) | 05h 16m |
| 70 mph (112.65 km/h) | 04h 31m |
| 80 mph (129 km/h) | 03h 57m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $42.20 | $84.39 |
| Mid-grade | $4.25 | $47.59 | $95.18 |
| Premium | $4.65 | $52.08 | $104.16 |
| Diesel | $5.30 | $59.35 | $118.70 |
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 · May 25, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.