How far is Markham, IL from Unity, IL?
The driving distance from Markham, IL to Unity, IL is about 344.2 miles (554 km), with a travel time of about 06h 25m by car.
- The straight-line flight distance is about 318.4 miles (512.4 km).
- For a round trip, plan for roughly 12h 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 06h 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 Cumberland County, Illinois, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Areas Of Frost then Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Markham and Unity.
Turn-by-Turn Driving Directions
Step-by-step road directions between Markham and Unity.
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1
Start on 163rd Street
20 m · 7 sec · 163rd Street
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2
Turn right onto Kedzie Avenue
2913 ft · 1 min · Kedzie Avenue
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3
Take the ramp slight right toward I 80 West
2482 ft · 1 min
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4
Merge slight left
2.3 mi · 3 min
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5
Take the exit slight left toward I 57 South: Memphis
1640 ft · 32 sec
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6
Merge slight right
187.1 mi · 3 hr 22 min
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7
Keep slight left to continue on I 57 South: Memphis
65.7 mi · 1 hr 11 min
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8
Keep slight right to continue on Ken Gray Expressway
73.9 mi · 1 hr 19 min · Ken Gray Expressway
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9
Take the exit slight right toward Shawnee College Road
1587 ft · 39 sec
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10
Turn right onto Shawnee College Road
1.4 mi · 3 min · Shawnee College Road
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11
At the end of the road, turn left onto Old US Highway 51
3.5 mi · 6 min · Old US Highway 51
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12
Continue on North Chestnut Street
1.5 mi · 3 min · North Chestnut Street
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13
Turn right onto Lackey Road
1.4 km · 2 min · Lackey Road
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14
Continue on Sandusky Road
2.6 mi · 6 min · Sandusky Road
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15
At the end of the road, turn left
3.7 mi · 7 min
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16
Turn left
25 m · 4 sec
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17
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Markham and Unity.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 57 South
Merge slight right
187 mi · 03h 22m
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.
Areas Of Frost then Mostly Sunny leaving Markham and Mostly Sunny near Unity.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Markham to Unity?
The road trip is about 344.2 miles (554 km) and usually takes 06h 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?
Neoga is a useful midpoint, sitting about 172.2 miles from Markham and 172 miles from Unity.
How much longer is the road route than the straight-line distance?
The direct path is about 318.4 miles (512.4 km), while the road route adds roughly 25.8 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 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 $45.82 one way or $91.64 round trip. Estimated CO2 is about 108 kg one way.
What should you check before leaving?
Before you leave, expect Areas Of Frost then Mostly Sunny around Markham and Mostly Sunny near Unity.
Stop Ideas Near Neoga
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 Neoga.
Mattoon station
Effingham
Illinois Terminal
Centralia station
Flight Path Map
This map shows the direct air route between Markham and Unity. Straight-line distance: 318.38 mi (512.39 km).
#1 Markham
A city located in Cook County, Illinois.
| Population | 13,400 |
| Coordinates | 41.5936500, -87.6947700 |
| Altitude | 189 |
| Country | United States |
#2 Unity
Unincorporated community in Illinois
| Population | 1,341 |
| Coordinates | 37.1497700, -89.2728600 |
| Altitude | 102 |
| Country | United States |
End: Unity (-89.27286, 37.14977)
Estimated Travel Time
Distance: 554 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 28m |
| 40 mph (64.37 km/h) | 08h 36m |
| 50 mph (80.47 km/h) | 06h 53m |
| 60 mph (96.56 km/h) | 05h 44m |
| 70 mph (112.65 km/h) | 04h 55m |
| 80 mph (129 km/h) | 04h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $45.82 | $91.64 |
| Mid-grade | $4.25 | $51.67 | $103.35 |
| Premium | $4.65 | $56.55 | $113.09 |
| Diesel | $5.30 | $64.44 | $128.89 |
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 02, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.