Spanning 211.3 miles across Illinois, this trek from Round Lake Beach to Decatur takes approximately 3 hours and 43 minutes. Because the distance is manageable, you can easily complete this as a single-day trip without needing an overnight stay. You should anticipate a fuel budget of roughly $31 to cover the journey. Navigating this path requires a focus on local roads, as your route relies on North Cedar Lake Road, Nippersink Avenue, and South Cedar Lake Road rather than major interstates. It is a straightforward trek through the Midwest that prioritizes local connectivity over high-speed travel, making it a practical choice for those looking to stay off the busy highway system.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
106.2 miles from Round Lake Beach, IL
A natural place for your longest stop of the day
, about 2h 12m into the drive
.
Hour-of-day weekday pattern from 4 FHWA count stations on your route.
Peak
3 PM
~1,093 veh/hr typical
· worst 1,450
Quietest
2 AM
~146 veh/hr
Peak-to-quiet ratio
7.5×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 43 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Round Lake Beach, IL and Decatur, IL.
1
Start on this road
142 ft·12 sec·this road
2
Turn right onto CR V63
1.4 mi·2 min·North Cedar Lake Road
3
Turn right onto Nippersink Avenue
0.1 mi·19 sec·Nippersink Avenue
4
Turn left onto South Cedar Lake Road
1.0 mi·1 min·South Cedar Lake Road
5
Turn right onto IL 120
3.6 mi·5 min·West Belvidere Road
6
Turn left onto US 12; IL 59
0.1 mi·17 sec·US 12; IL 59
Use the left lane.
7
Continue on US 12; IL 59
0.1 mi·7 sec·US 12; IL 59
8
Continue on US 12; IL 59
1.7 mi·1 min·US 12; IL 59
9
Continue on US 12; IL 59
1.1 mi·1 min·US 12; IL 59
10
Continue on US 12; IL 59
14 mi·20 min·US 12; IL 59
Use the left lane.
11
Take the ramp
0.3 mi·40 sec
Toward IL 53 SouthUse the right lane.
12
Merge onto IL 53
4.4 mi·5 min·IL 53
Use the straight / slight right lanes.
13
Keep slight left at fork onto IL 53
7.0 mi·9 min·IL 53
Toward I 290 East: Chicago, Biesterfield RoadUse the straight / slight right lanes.
14
Keep slight left at fork onto I 355
20 mi·25 min·I 355
Exit 7Toward I 355 South Tollway: JolietUse the slight left lane.
15
Take the exit
0.3 mi·35 sec
Exit 12AToward I 55 South: Joliet Road, Saint LouisUse the straight / slight right lanes.
16
Keep slight left at fork
0.4 mi·47 sec
Toward Joliet Road SouthUse the slight left lane.
17
Keep slight left at fork
0.1 mi·17 sec
Toward I 55 South: Saint LouisUse the straight / slight right lanes.
18
Merge onto I 55
112 mi·2 hr 2 min·Adlai Stevenson Expressway
Use the straight / slight right lanes.
19
Keep slight left at fork onto I 74; US 51
2.1 mi·2 min·I 74; US 51
Toward I 74 East, US 51 South, US 55 Business North: Indianapolis, Decatur
20
Take the exit onto US 51
0.3 mi·39 sec·US 51
Exit 135Toward US 51 South, US 51 Business North: Decatur, Bloomington
21
Continue on US 51
15 mi·17 min·North 1450 East Road
Use the straight lane.
22
Continue on US 51
23 mi·29 min·North Walnut Street
23
Turn straight onto US 51 Business
4.7 mi·7 min·US 51 Business
24
Turn left onto East Wood Street
298 ft·8 sec·East Wood Street
25
Arrive at destination
East Wood Street
Trip Plan
To make the most of your 3-hour and 43-minute travel time, plan for at least one dedicated stop along the way to break up the turns. Leaving early in the day is your best strategy to avoid fatigue, especially since you are navigating local roads that do not offer the quick pace of a major highway. Keep a close eye on your fuel gauge, as the $31 estimate is based on consistent driving conditions, and local routes can sometimes be less predictable than interstates. Given the turn-heavy nature of this journey, ensure your GPS is updated and ready to handle the frequent transitions between North Cedar Lake Road, Nippersink Avenue, and South Cedar Lake Road. Maintaining a flexible schedule is a major advantage for this trip, allowing you to pace yourself comfortably.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 106.2 miles from Round Lake Beach, IL, or about 2h 12m into the drive.
The longest continuous stretch on this route runs about 111.5 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 47 miles or 1h 5m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 106.2 miles or 2h 12m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 28m
Traffic, exits, and arrival timing usually matter more near Decatur, IL than in the middle of the route.
Before You Leave
+
Open the route before leaving Round Lake Beach, IL so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Round Lake Beach, IL
This is one driving day of about 212.5 miles and 4h 18m.
Your first comfortable stop window is around 47 miles from Round Lake Beach, IL.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on Adlai Stevenson Expressway for about 111.5 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 15
5 decision points cluster between mile 23.5 and 55.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
23.5 mi into trip|~34m in
Take the ramp toward IL 53 South
Lane positioning matters here
Use the right lane.
Toward IL 53 South
8
28.1 mi into trip|~41m in|IL 53
Keep slight left at fork onto IL 53 toward I 290 East: Chicago, Biesterfield Road
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward I 290 East: Chicago, Biesterfield Road
8
35.1 mi into trip|~50m in|I 355
Keep slight left at fork onto I 355 toward I 355 South Tollway: Joliet
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Exit 7
Toward I 355 South Tollway: Joliet
8
55.2 mi into trip|~1h 15m in
Take the exit toward I 55 South: Joliet Road, Saint Louis
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 12A
Toward I 55 South: Joliet Road, Saint Louis
7
55.5 mi into trip|~1h 16m in
Keep slight left at fork toward Joliet Road South
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward Joliet Road South
Fuel & Cost
Regular Gas
$31.38 one way
$62.76 round trip
$3.75/gal25.4 MPG avg74 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$34.64
$69.29
premium
$4.72
$39.45
$78.91
diesel
$4.80
$40.12
$80.25
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$31
Meals
$25–$50
Total
$56–$81
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 74.3 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $22 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
63.8
0
$22.31
$10.20
Efficient EV
53.1
0
$18.59
$8.50
EV Truck/SUV
85
1
$29.75
$13.60
Gas CO2
74 kg
EV CO2
25 kg (66% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Forecast as of Jul 18, 2026
Origin
Round Lake Beach, IL
Late night
in Round Lake Beach on Sunday
Local time
5:59 AM
CDT
Current temp
89°F
Patchy Smoke
NNE 15 mph0% chanceLive forecast
Heat Advisory
Heat Advisory issued July 18 at 3:26PM CDT until July 18 at 7:00PM CDT by NWS Quad Cities IA IL
Beach Hazards Statement
Beach Hazards Statement issued July 18 at 3:04PM CDT until July 19 at 10:00AM CDT by NWS Chicago IL
Destination
Decatur, IL
Late night
in Decatur on Sunday
Local time
5:59 AM
CDT
Current temp
70°F
Chance Showers And Thunderstorms
NNW 3 to 9 mph52% chanceLive forecast
Heat Advisory
Heat Advisory issued July 18 at 3:26PM CDT until July 18 at 7:00PM CDT by NWS Quad Cities IA IL
Beach Hazards Statement
Beach Hazards Statement issued July 18 at 3:04PM CDT until July 19 at 10:00AM CDT by NWS Chicago IL
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
19 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
4h 18m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Pullman National Historical Park
National Historical Park
In a growing Chicago neighborhood, diverse people and stories intertwined. All were seeking opportunity. Some succeeded. Others were limited—by race, gender, or economic status. Their stories came tog...
23 mi from route
~57 min detour
Free
near mile 51.3
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a turn-heavy local drive rather than a monotonous interstate cruise, as this route maintains a zero-percent highway share. Behind the wheel, you will navigate a series of local thoroughfares that demand your constant attention compared to the mindless straightaways of a typical freeway. Since your longest stretch is 0 miles on North Cedar Lake Road, the road profile remains consistently active with frequent turns and intersections. This character makes the journey feel more hands-on and immersive as you transition through the Illinois landscape. You will find that the lack of highway miles creates a distinct driving experience that keeps you engaged with the local geography from start to finish.
79% highway — fuel and pacing are the main things to plan.
25 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 111.5 mi on Adlai Stevenson Expressway.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on Adlai Stevenson Expressway and North Walnut Street. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 23.5 miles in.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 15 significant decision points across 212.5 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 23.5 miles: Lane positioning matters here; at 28.1 miles (IL 53): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 35.1 miles (I 355): Highway fork - watch signs carefully. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
824 ft529 ft
Total Climb
327 ft
Total Descent
414 ft
Highest Point
824 ft
~15.2 mi in
Elevation Range
295 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Round Lake Beach, IL and Decatur, IL, road signs point toward Saint Louis, Joliet Road South and Bloomington.
Chicagoland consists of the Chicago metropolitan area in northeastern Illinois, including Chicago and its surrounding suburbs including those in Northwest Indiana. Broader definitions also include parts of Southeast Wisconsin. It covers all of Cook, DuPage, Lake, Kane and Will Counties in Illinois, and portions of Kenosha County, Wisconsin; McHenry County, Illinois, and in Indiana, Lake, Porter, and portions of LaPorte Counties.
Doable as a same-day drive at 4h 18m. Total distance: 212.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 18m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (79%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 111.5 miles on Adlai Stevenson Expressway. The full list of main roads is in the Roads section above.
Yes — we found about 16 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Decatur, IL before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. There are 16 rest areas along the route for bathroom stops.
The main spots that need attention: at 23.5 miles: Lane positioning matters here; at 28.1 miles (IL 53): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 35.1 miles (I 355): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Pullman National Historical Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.3 hours each way, an in-and-out day trip would put you behind the wheel for 8.6 hours — manageable with a long break at Decatur, IL, but most travelers stay overnight.
