How far is Waukegan, IL from Seneca, IL?
The driving distance from Waukegan, IL to Seneca, IL is about 102.7 miles (165.3 km), with a travel time of about 02h 10m by car.
- The straight-line flight distance is about 82.7 miles (133.1 km).
- For a round trip, plan for roughly 04h 20m 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 10m.
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.
Town in Connecticut
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Waukegan and Seneca.
Turn-by-Turn Driving Directions
Step-by-step road directions between Waukegan and Seneca.
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1
Start on North Jackson Street
2647 ft · 1 min · North Jackson Street
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2
Turn right onto Glen Rock Avenue
2495 ft · 1 min · Glen Rock Avenue
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3
Turn right onto Belvidere Street
1.6 mi · 3 min · Belvidere Street
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4
Continue on Belvidere Road
2.2 mi · 3 min · Belvidere Road
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5
Take the ramp slight right toward I 94 East Toll: Chicago
1511 ft · 37 sec
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6
Merge slight left onto Tri-State Tollway
13.9 mi · 16 min · Tri-State Tollway
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7
Keep slight right to continue on Tri-State Tollway
22.7 mi · 29 min · Tri-State Tollway
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8
Keep slight left to continue on Tri-State Tollway
4.8 mi · 6 min · Tri-State Tollway
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9
Keep slight right to continue on Tri-State Tollway
1.2 mi · 1 min · Tri-State Tollway
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10
Take the exit slight right toward I 55: Chicago, St. Louis
1 km · 1 min
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11
Keep slight right to continue on I 55 South: Saint Louis
2295 ft · 56 sec
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12
Merge slight left onto Adlai Stevenson Expressway
25.9 mi · 32 min · Adlai Stevenson Expressway
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13
Take the exit slight right toward I 80 West: Iowa
1.3 km · 1 min
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14
Merge slight left
20.5 mi · 22 min
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15
Take the exit slight right toward Seneca
2136 ft · 52 sec
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16
Continue on Seneca Road
3035 ft · 1 min · Seneca Road
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17
Continue on Grand Army of the Republic Highway
3.9 mi · 6 min · Grand Army of the Republic Highway
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18
Continue on East Jackson Street
1.2 mi · 2 min · East Jackson Street
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19
Turn left onto North Main Street
1.1 km · 1 min · North Main Street
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20
Turn right onto West Union Street
2 m · 1 sec · West Union Street
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21
Arrive at your destination
0 m · 1 sec · West Union Street
Car Route Details
A richer read on the saved driving route between Waukegan and Seneca.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Adlai Stevenson Expressway
Merge slight left onto Adlai Stevenson Expressway
25.9 mi · 00h 32m
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.
Chance Showers And Thunderstorms leaving Waukegan and Showers And Thunderstorms Likely near Seneca.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Waukegan to Seneca?
The road trip is about 102.7 miles (165.3 km) and usually takes 02h 10m 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?
Darien is a useful midpoint, sitting about 51.3 miles from Waukegan and 51.4 miles from Seneca.
How much longer is the road route than the straight-line distance?
The direct path is about 82.7 miles (133.1 km), while the road route adds roughly 20 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 2:10 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $13.65 one way or $27.30 round trip. Estimated CO2 is about 32.2 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms around Waukegan and Showers And Thunderstorms Likely near Seneca.
Stop Ideas Near Darien
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 Darien.
La Grange Road
Summit
Naperville
Joliet Transportation Center
Flight Path Map
This map shows the direct air route between Waukegan and Seneca. Straight-line distance: 82.7 mi (133.09 km).
#1 Waukegan
The second most populous city in Lake County, Illinois.
| Population | 85,453 |
| Coordinates | 42.3636300, -87.8447900 |
| Altitude | 199 |
| Country | United States |
#2 Seneca
Village in Illinois
| Population | 2,179 |
| Coordinates | 41.3111400, -88.6097900 |
| Altitude | 155 |
| Country | United States |
End: Seneca (-88.60979, 41.31114)
Estimated Travel Time
Distance: 165 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 25m |
| 40 mph (64.37 km/h) | 02h 34m |
| 50 mph (80.47 km/h) | 02h 03m |
| 60 mph (96.56 km/h) | 01h 42m |
| 70 mph (112.65 km/h) | 01h 28m |
| 80 mph (129 km/h) | 01h 16m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $13.65 | $27.30 |
| Mid-grade | $4.25 | $15.40 | $30.79 |
| Premium | $4.65 | $16.85 | $33.69 |
| Diesel | $5.30 | $19.20 | $38.40 |
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 15, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.