How far is Summit, IL from Lockport, IL?
The driving distance from Summit, IL to Lockport, IL is about 265.9 miles (428 km), with a travel time of about 04h 11m by car.
- The straight-line flight distance is about 233.8 miles (376.3 km).
- For a round trip, plan for roughly 08h 23m 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 04h 11m.
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 Illinois, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Summit and Lockport.
Turn-by-Turn Driving Directions
Step-by-step road directions between Summit and Lockport.
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1
Start on Hanna Drive
936 ft · 43 sec · Hanna Drive
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2
Turn right onto Illinois Route 161
4.1 mi · 6 min · Illinois Route 161
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3
At the end of the road, turn left onto Saint Clair Avenue
2001 ft · 36 sec · Saint Clair Avenue
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4
Turn right
1017 ft · 37 sec
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5
Turn straight
6 mi · 9 min
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6
Take the ramp left toward I 55 North, I 70 East: Chicago, Indianapolis
632 ft · 28 sec
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7
Merge slight left
7.8 mi · 9 min
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8
Keep slight left to continue on I 55 North, I 270 West: Chicago, Springfield, Kansas City
107.9 mi · 1 hr 57 min
-
9
Keep slight right to continue on I 55 North: Chicago
29.4 mi · 31 min
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10
Keep slight left to continue on I 55 North, I 74 West: Chicago, Peoria
93.9 mi · 1 hr 41 min
-
11
Take the exit slight right toward I 80 East: Indiana
1.2 km · 1 min
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12
Merge slight left
5.1 mi · 6 min
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13
Take the exit slight right toward Center Street
1.3 km · 2 min
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14
Continue on South Center Street
1401 ft · 38 sec · South Center Street
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15
Continue on Hickory Street
1.2 km · 2 min · Hickory Street
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16
Turn right onto Bridge Street
106 m · 17 sec · Bridge Street
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17
Turn left onto Broadway Street
4.4 mi · 9 min · Broadway Street
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18
Turn right onto West 9th Street
1.6 km · 2 min · West 9th Street
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19
Arrive at your destination
0 m · 1 sec · West 9th Street
Car Route Details
A richer read on the saved driving route between Summit and Lockport.
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 55 North
Keep slight left to continue on I 55 North, I 270 West: Chicago, Springfield, Kansas City
108 mi · 01h 57m
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.
Chance Showers And Thunderstorms leaving Summit and Showers And Thunderstorms near Lockport.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Summit to Lockport?
The road trip is about 265.9 miles (428 km) and usually takes 04h 11m 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?
Lincoln is a useful midpoint, sitting about 131.5 miles from Summit and 134.5 miles from Lockport.
How much longer is the road route than the straight-line distance?
The direct path is about 233.8 miles (376.3 km), while the road route adds roughly 32.1 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 8:36 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $43.76 one way or $87.52 round trip. Estimated CO2 is about 83.4 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Summit and Showers And Thunderstorms near Lockport.
Stop Ideas Near Lincoln
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 Lincoln.
Lincoln
Springfield station
Uptown Station
Peoria, Illinois
Flight Path Map
This map shows the direct air route between Summit and Lockport. Straight-line distance: 233.79 mi (376.25 km).
#1 Summit
Village in Illinois, USA
| Population | 10,977 |
| Coordinates | 38.5511600, -90.0048300 |
| Altitude | 173 |
| Country | United States |
#2 Lockport
The most populous city in Will County, Illinois.
| Population | 59,877 |
| Coordinates | 41.5894800, -88.0578400 |
| Altitude | 181 |
| Country | United States |
End: West 9th Street (-88.057844, 41.589471)
Estimated Travel Time
Distance: 428 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 51m |
| 40 mph (64.37 km/h) | 06h 38m |
| 50 mph (80.47 km/h) | 05h 19m |
| 60 mph (96.56 km/h) | 04h 25m |
| 70 mph (112.65 km/h) | 03h 47m |
| 80 mph (129 km/h) | 03h 19m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.67 | $43.76 | $87.52 |
| Mid-grade | $5.29 | $49.64 | $99.28 |
| Premium | $5.84 | $54.75 | $109.50 |
| Diesel | $6.57 | $61.64 | $123.27 |
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