How far is Markham, IL from Sullivan, IL?
The driving distance from Markham, IL to Sullivan, IL is about 178.6 miles (287.5 km), with a travel time of about 03h 25m by car.
- The straight-line flight distance is about 145.9 miles (234.8 km).
- For a round trip, plan for roughly 06h 51m 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 25m.
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.
City in Ford County, Illinois
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Markham and Sullivan.
Turn-by-Turn Driving Directions
Step-by-step road directions between Markham and Sullivan.
-
1
Start on 163rd Street
20 m · 7 sec · 163rd Street
-
2
Turn right onto Kedzie Avenue
2913 ft · 1 min · Kedzie Avenue
-
3
Take the ramp slight right toward I 80 West
2482 ft · 1 min
-
4
Merge slight left
2.3 mi · 3 min
-
5
Take the exit slight left toward I 57 South: Memphis
1640 ft · 32 sec
-
6
Merge slight right
154.8 mi · 2 hr 47 min
-
7
Take the exit slight right toward IL 16 West: Mattoon
2489 ft · 1 min
-
8
Turn straight onto Charleston Avenue East
2.8 mi · 6 min · Charleston Avenue East
-
9
Turn right onto South 19th Street
2731 ft · 60 sec · South 19th Street
-
10
Turn left onto Dewitt Avenue
2 mi · 3 min · Dewitt Avenue
-
11
Continue on Route 121
14.4 mi · 21 min · Route 121
-
12
Turn left onto North Main Street
534 ft · 25 sec · North Main Street
-
13
Turn right onto West Harrison Street
31 m · 4 sec · West Harrison Street
-
14
Arrive at your destination
0 m · 1 sec · West Harrison Street
Car Route Details
A richer read on the saved driving route between Markham and Sullivan.
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 57 South
Merge slight right
155 mi · 02h 47m
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.
Showers And Thunderstorms leaving Markham and Showers And Thunderstorms Likely near Sullivan.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Markham to Sullivan?
The road trip is about 178.6 miles (287.5 km) and usually takes 03h 25m 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?
Paxton is a useful midpoint, sitting about 89.4 miles from Markham and 89.3 miles from Sullivan.
How much longer is the road route than the straight-line distance?
The direct path is about 145.9 miles (234.8 km), while the road route adds roughly 32.7 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 10:08 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $29.44 one way or $58.87 round trip. Estimated CO2 is about 56.1 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Markham and Showers And Thunderstorms Likely near Sullivan.
Stop Ideas Near Paxton
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 Paxton.
Rantoul
Gilman
Illinois Terminal
Danville, Illinois
Flight Path Map
This map shows the direct air route between Markham and Sullivan. Straight-line distance: 145.87 mi (234.76 km).
#1 Markham
A city located in Cook County, Illinois.
| Population | 13,400 |
| Coordinates | 41.5936500, -87.6947700 |
| Altitude | 189 |
| Country | United States |
#2 Sullivan
City in Illinois
| Population | 4,400 |
| Coordinates | 39.5994800, -88.6078400 |
| Altitude | 205 |
| Country | United States |
End: Sullivan (-88.60784, 39.59948)
Estimated Travel Time
Distance: 288 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 57m |
| 40 mph (64.37 km/h) | 04h 28m |
| 50 mph (80.47 km/h) | 03h 34m |
| 60 mph (96.56 km/h) | 02h 58m |
| 70 mph (112.65 km/h) | 02h 33m |
| 80 mph (129 km/h) | 02h 13m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.67 | $29.44 | $58.87 |
| Mid-grade | $5.29 | $33.39 | $66.79 |
| Premium | $5.84 | $36.83 | $73.66 |
| Diesel | $6.57 | $41.46 | $82.93 |
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 · Oct 15, 2026