Port Byron, IL to Bremen, IL is 312.8 miles and takes about 6h 5m via I 55, with a fuel budget near $55 and enough daylight to finish in a day. This drive stays within the Midwest, primarily through Illinois, offering a straightforward trip. With a high highway share, it’s designed for efficient travel. Consider this route if you're looking for a direct path between these two points with minimal fuss and a predictable travel time.
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
156.4 miles from Port Byron, IL
A natural place for your longest stop of the day
, about 2h 51m into the drive
.
Main Roads
Road
Distance
Duration
I 55
111.9 mi
2h 1m
Chicago-Kansas City Expressway
72.3 mi
1h 17m
I 155
31.8 mi
34m
IL 3
23.3 mi
28m
I 474
13.8 mi
14m
North Illinois Street
9.8 mi
15m
I 80
9.5 mi
10m
South Illinois Street
8.3 mi
12m
Longest stretch:
I 55
— 111.9 mi, about 2h 1m
Traffic on I-55
Hour-of-day weekday pattern from 20 FHWA count stations on your route.
Peak
4 PM
~1,745 veh/hr typical
· worst 2,160
Quietest
2 AM
~156 veh/hr
Peak-to-quiet ratio
11.2×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 52 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 Port Byron, IL and Bremen, IL.
1
Start on Cherry Street
82 ft·5 sec·Cherry Street
2
Turn right onto IL 84
1.1 mi·1 min·South High Street
3
Continue on IL 84
2.0 mi·3 min·2nd Avenue
4
Turn left
0.5 mi·1 min
5
Merge onto I 80
9.5 mi·10 min·I 80
6
Keep slight left at fork onto IL 110
72 mi·1 hr 17 min·Chicago-Kansas City Expressway
7
Take the exit
1.0 mi·1 min
Toward I 474 East: Indianapolis
8
Merge onto I 474
14 mi·14 min·I 474
9
Merge onto I 74
1.4 mi·1 min·I 74
10
Take the exit
0.7 mi·1 min
Toward I 155 South: Lincoln
11
Continue on I 155
32 mi·34 min·I 155
12
Merge onto I 55
34 mi·37 min·I 55
Use the straight / slight right lanes.
13
Keep slight left at fork onto I 55
78 mi·1 hr 23 min·I 55
Toward I 55 South: Saint LouisUse the straight / slight right lanes.
14
Take the exit
0.3 mi·47 sec
Exit 15AToward IL 159 South: Collinsville
15
Continue on IL 159
3.0 mi·4 min·Vandalia Street
16
Continue on IL 159
1.3 mi·1 min·South Morrison Avenue
17
Continue on IL 159
9.8 mi·15 min·North Illinois Street
18
Enter roundabout onto IL 159
181 ft·4 sec·South Illinois Street
19
Continue on IL 159
8.3 mi·12 min·South Illinois Street
20
Continue on IL 159
6.1 mi·9 min·State Route 159
21
Continue on IL 156; IL 159
0.2 mi·19 sec·North Main Street
22
Continue on IL 159
0.2 mi·13 sec·N Main St
23
Continue on IL 159
8.0 mi·11 min·Main Street
24
Continue on IL 3
23 mi·28 min·IL 3
25
Turn left onto IL 150
6.1 mi·10 min·State Street
26
Turn slight left onto Chester Road
0.2 mi·34 sec·Chester Road
27
Arrive at destination
Chester Road
Trip Plan
For this 6-hour drive, leaving in the morning should give you plenty of daylight to reach Bremen, IL, with time to spare. The longest stretch without a significant break is nearly 112 miles on I 55, so plan a quick stop before or after that section to stretch your legs. With a fuel cost estimated at $55, it’s wise to ensure your tank is full before departing Port Byron, IL, as services can be spaced out on interstates. This is a manageable one-day trip, allowing for flexibility in your schedule.
Morning Departure
Start early — leave by 6-7 AM to arrive at a reasonable hour.
Evening Departure
This is a long drive — plan for a morning departure or consider splitting it into two days.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 156.4 miles from Port Byron, IL, or about 2h 51m into the drive.
The longest continuous stretch on this route runs about 111.9 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 69 miles or 1h 16m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 156.4 miles or 2h 51m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 45m
Traffic, exits, and arrival timing usually matter more near Bremen, IL than in the middle of the route.
Before You Leave
+
Open the route before leaving Port Byron, 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 Port Byron, IL
This is one driving day of about 312.8 miles and 6h 5m.
Your first comfortable stop window is around 69 miles from Port Byron, 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 I 55 for about 111.9 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 13
5 decision points cluster between mile 13.1 and 260.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
4
13.1 mi into trip|~16m in|IL 110 / Chicago-Kansas City Expressway
Keep slight left at fork onto IL 110 / Chicago-Kansas City Expressway
Highway fork - watch signs carefully
5
134.1 mi into trip|~2h 27m in|I 55
Merge onto I 55
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
7
168.2 mi into trip|~3h 4m in|I 55
Keep slight left at fork onto I 55 toward I 55 South: Saint Louis
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward I 55 South: Saint Louis
5
246 mi into trip|~4h 28m in
Take the exit toward IL 159 South: Collinsville
Exit ramp - move to the correct lane early
Exit 15A
Toward IL 159 South: Collinsville
5
260.3 mi into trip|~4h 51m in|IL 159 / South Illinois Street
Enter roundabout onto IL 159 / South Illinois Street
Roundabout - know your exit number before entering
Fuel & Cost
Regular Gas
$46.19 one way
$92.39 round trip
$3.75/gal25.4 MPG avg109 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$51.00
$101.99
premium
$4.72
$58.08
$116.15
diesel
$4.80
$59.06
$118.13
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$46
Meals
$25–$50
Total
$71–$96
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 109.4 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $33 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
93.8
1
$32.84
$15.01
Efficient EV
78.2
0
$27.37
$12.51
EV Truck/SUV
125.1
1
$43.79
$20.02
Gas CO2
109 kg
EV CO2
37 kg (66% less)
Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.
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 17, 2026
Origin
Port Byron, IL
Late night
in Port Byron on Monday
Local time
1:36 AM
CDT
Current temp
87°F
Unavailable
Live forecast
Destination
Bremen, IL
Late night
in Bremen on Monday
Local time
1:36 AM
CDT
Current temp
90°F
Chance Showers And Thunderstorms
W 5 mph41% chanceLive forecast
87°F
Hillsboro, IL
156 mi in
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
3 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
6h 5m on the road
Start early — leave by 6-7 AM to arrive at a reasonable hour.
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.
Springfield 1908 Race Riot National Monument
National Monument
In August 1908, a large White mob attacked the Black community in Springfield, Illinois. Rioters destroyed homes and businesses and lynched two men. The event led to the founding of the National Assoc...
3 mi from route
~7 min detour
Free
near mile 161.8
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This trip is mostly highway, with 86% of the 312.8 miles on major interstates like I 55 and I 155. You'll encounter a long stretch of 111.9 miles on I 55, so expect extended periods of consistent cruising. The profile is mostly highway, meaning you'll likely experience a steady flow of traffic and a relatively straightforward driving experience until you transition to surface roads closer to your destination.
86% highway — fuel and pacing are the main things to plan.
27 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 111.9 mi on I 55.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on I 55 and Chicago-Kansas City Expressway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 13.1 miles in near IL 110 / Chicago-Kansas City Expressway.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 13 significant decision points across 312.8 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 13.1 miles (IL 110 / Chicago-Kansas City Expressway): Highway fork - watch signs carefully; at 134.1 miles (I 55): Merge point - match speed before joining. Lane positioning matters here; at 168.2 miles (I 55): Highway fork - watch signs carefully. Lane positioning matters here.
Doable as a same-day drive at 6h 5m. Total distance: 312.8 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
6h 5m drive, plan rest stops for pacing.
Frequently Asked Questions
The longest stretch is about 111.9 miles on I 55. The full list of main roads is in the Roads section above.
Yes — we found about 24 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 Bremen, 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 24 rest areas along the route for bathroom stops.
The main spots that need attention: at 13.1 miles (IL 110 / Chicago-Kansas City Expressway): Highway fork - watch signs carefully; at 134.1 miles (I 55): Merge point - match speed before joining. Lane positioning matters here; at 168.2 miles (I 55): Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Springfield 1908 Race Riot National Monument. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 6.1 hours each way, a round trip means 12.2 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Bremen, IL before the return drive.
