How far is Prophetstown, IL from Markham, IL?
The driving distance from Prophetstown, IL to Markham, IL is about 141.1 miles (227 km), with a travel time of about 02h 19m by car.
- The straight-line flight distance is about 115.9 miles (186.5 km).
- For a round trip, plan for roughly 04h 39m 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 19m.
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.
The county seat of DeKalb County, Illinois.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Prophetstown and Markham.
Turn-by-Turn Driving Directions
Step-by-step road directions between Prophetstown and Markham.
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1
Start on Washington Street
89 m · 11 sec · Washington Street
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2
Turn left onto West 2nd Street
1321 ft · 26 sec · West 2nd Street
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3
Continue on Johnson Drive
767 ft · 15 sec · Johnson Drive
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4
Continue on Bishop Road
2.6 mi · 4 min · Bishop Road
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5
At the end of the road, turn left onto Crosby Road
2.6 mi · 4 min · Crosby Road
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6
Take the ramp right
1926 ft · 47 sec
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7
Merge slight left onto Ronald Reagan Memorial Highway
17.8 mi · 19 min · Ronald Reagan Memorial Highway
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8
Continue on Ronald Reagan Memorial Tollway
91 mi · 1 hr 41 min · Ronald Reagan Memorial Tollway
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9
Keep slight right to continue on Ronald Reagan Memorial Tollway
3.7 mi · 4 min · Ronald Reagan Memorial Tollway
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10
Take the exit slight right toward I 294 South, IL 38: Indiana
1692 ft · 41 sec
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11
Keep slight left
1 mi · 2 min
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12
Merge slight left onto Tri-State Tollway
3.6 mi · 5 min · Tri-State Tollway
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13
Keep slight right to continue on Tri-State Tollway
3.5 mi · 4 min · Tri-State Tollway
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14
Continue on Mile-Long Bridge
1.5 km · 1 min · Mile-Long Bridge
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15
Continue on Tri-State Tollway
14.1 mi · 18 min · Tri-State Tollway
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16
Take the exit slight right toward US 6: 159th Street
1517 ft · 37 sec
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17
Keep slight right to continue on US 6 West: 159th Street
2223 ft · 54 sec
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18
Turn straight onto West 159th Street
2159 ft · 57 sec · West 159th Street
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19
Turn left onto Kedzie Avenue
2728 ft · 1 min · Kedzie Avenue
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20
Turn right onto 163rd Street
20 m · 3 sec · 163rd Street
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21
Arrive at your destination
0 m · 1 sec · 163rd Street
Car Route Details
A richer read on the saved driving route between Prophetstown and Markham.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Ronald Reagan Memorial Tollway
Continue on Ronald Reagan Memorial Tollway
91 mi · 01h 41m
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 Prophetstown and Mostly Sunny near Markham.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Prophetstown to Markham?
The road trip is about 141.1 miles (227 km) and usually takes 02h 19m 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?
DeKalb is a useful midpoint, sitting about 71.6 miles from Prophetstown and 69.4 miles from Markham.
How much longer is the road route than the straight-line distance?
The direct path is about 115.9 miles (186.5 km), while the road route adds roughly 25.2 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 1:50 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $18.78 one way or $37.56 round trip. Estimated CO2 is about 44.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Prophetstown and Mostly Sunny near Markham.
Stop Ideas Near DeKalb
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 DeKalb.
Plano
Rockford, Illinois
Mendota station
Naperville
Flight Path Map
This map shows the direct air route between Prophetstown and Markham. Straight-line distance: 115.87 mi (186.48 km).
#1 Prophetstown
City in Whiteside County, Illinois, United States
| Population | 1,919 |
| Coordinates | 41.6714200, -89.9362200 |
| Altitude | 189 |
| Country | United States |
#2 Markham
A city located in Cook County, Illinois.
| Population | 13,400 |
| Coordinates | 41.5936500, -87.6947700 |
| Altitude | 189 |
| Country | United States |
End: 163rd Street (-87.694771, 41.593508)
Estimated Travel Time
Distance: 227 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 41m |
| 40 mph (64.37 km/h) | 03h 31m |
| 50 mph (80.47 km/h) | 02h 49m |
| 60 mph (96.56 km/h) | 02h 21m |
| 70 mph (112.65 km/h) | 02h 00m |
| 80 mph (129 km/h) | 01h 45m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $18.78 | $37.56 |
| Mid-grade | $4.25 | $21.18 | $42.36 |
| Premium | $4.65 | $23.18 | $46.35 |
| Diesel | $5.30 | $26.41 | $52.83 |
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.