How far is Somerset, IL from Joliet, IL?
The driving distance from Somerset, IL to Joliet, IL is about 320.4 miles (515.7 km), with a travel time of about 05h 22m by car.
- The straight-line flight distance is about 268.2 miles (431.6 km).
- For a round trip, plan for roughly 10h 45m 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 22m.
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
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Somerset and Joliet.
Turn-by-Turn Driving Directions
Step-by-step road directions between Somerset and Joliet.
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1
Start on Somerset Road
35 m · 12 sec · Somerset Road
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2
Turn sharp left onto Deneal Road
1.2 mi · 5 min · Deneal Road
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3
Continue on Deneal Road
1.4 mi · 5 min · Deneal Road
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4
At the end of the road, turn right
2.8 mi · 4 min
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5
Continue straight
5.9 mi · 10 min
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6
At the end of the road, turn right onto South Commercial Street
1.2 mi · 2 min · South Commercial Street
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7
Turn left
1 km · 51 sec
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8
Take the exit slight right
53 m · 5 sec
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9
Turn slight right onto North Main Street
31.6 mi · 48 min · North Main Street
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10
Enter the roundabout and take exit 2 toward Public Square
124 m · 10 sec · West Main Street
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11
Exit the rotary onto West Main Street
3144 ft · 55 sec · West Main Street
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12
Take the ramp slight right
1685 ft · 41 sec
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13
Merge slight left onto Ken Gray Expressway
24 mi · 26 min · Ken Gray Expressway
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14
Keep slight right to continue on Ken Gray Expressway
67.5 mi · 1 hr 13 min · Ken Gray Expressway
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15
Keep slight left to continue on I 57 North: Chicago
154.9 mi · 2 hr 46 min
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16
Take the exit slight right toward Bourbonnais Parkway
2050 ft · 42 sec
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17
Turn left onto Bourbonnais Parkway
3273 ft · 1 min · Bourbonnais Parkway
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18
Turn right
10.1 mi · 14 min
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19
Turn left onto West Joliet Road
1.3 mi · 2 min · West Joliet Road
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20
Continue on West Arsenal Road
1.9 mi · 3 min · West Arsenal Road
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21
Continue on West Joliet Road
3.1 mi · 5 min · West Joliet Road
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22
Continue on US Route 52
1.2 mi · 2 min · US Route 52
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23
Continue on South State Street
1.9 mi · 3 min · South State Street
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24
Continue on West North Street
2.3 mi · 4 min · West North Street
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25
Continue on Manhattan Road
3.1 mi · 4 min · Manhattan Road
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26
Turn left onto Manhattan Road
2.2 mi · 4 min · Manhattan Road
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27
Continue on Gardner Street
1482 ft · 43 sec · Gardner Street
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28
Turn left onto Doris Avenue
686 ft · 16 sec · Doris Avenue
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29
Turn right onto South Chicago Street
1.2 mi · 3 min · South Chicago Street
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30
Keep slight right to continue on Chicago Street
83 m · 13 sec · Chicago Street
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31
Turn left onto West Washington Street
771 ft · 25 sec · West Washington Street
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32
Turn right onto Joliet Street
158 m · 18 sec · Joliet Street
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33
Turn right
83 m · 20 sec
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34
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Somerset and Joliet.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 57 North
Keep slight left to continue on I 57 North: Chicago
155 mi · 02h 46m
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 Somerset and Mostly Sunny near Joliet.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Somerset to Joliet?
The road trip is about 320.4 miles (515.7 km) and usually takes 05h 22m 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?
Mattoon is a useful midpoint, sitting about 161.1 miles from Somerset and 159.3 miles from Joliet.
How much longer is the road route than the straight-line distance?
The direct path is about 268.2 miles (431.6 km), while the road route adds roughly 52.2 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 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 6:14 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $42.65 one way or $85.30 round trip. Estimated CO2 is about 100.5 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Somerset and Mostly Sunny near Joliet.
Stop Ideas Near Mattoon
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 Mattoon.
Mattoon station
Effingham
Illinois Terminal
Rantoul
Flight Path Map
This map shows the direct air route between Somerset and Joliet. Straight-line distance: 268.18 mi (431.59 km).
#1 Somerset
Unincorporated community in Illinois
| Population | 3,955 |
| Coordinates | 37.6544900, -88.4572700 |
| Altitude | 139 |
| Country | United States |
#2 Joliet
The second most populous city in Will County, Illinois.
| Population | 85,583 |
| Coordinates | 41.5251900, -88.0834000 |
| Altitude | 165 |
| Country | United States |
End: (-88.083409, 41.525419)
Estimated Travel Time
Distance: 516 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 10h 40m |
| 40 mph (64.37 km/h) | 08h 00m |
| 50 mph (80.47 km/h) | 06h 24m |
| 60 mph (96.56 km/h) | 05h 20m |
| 70 mph (112.65 km/h) | 04h 34m |
| 80 mph (129 km/h) | 03h 59m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $42.65 | $85.30 |
| Mid-grade | $4.25 | $48.10 | $96.20 |
| Premium | $4.65 | $52.64 | $105.27 |
| Diesel | $5.30 | $59.99 | $119.98 |
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 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.