Flatonia, TX to Plano, TX is 256.8 miles and takes about 4h 55m via I 35E, with a fuel budget near $39 and enough daylight to finish in a day. This trip stays within the Great Plains region, moving from South Texas into the Dallas-Fort Worth metroplex. Expect a mix of highway cruising and surface streets as you make your way north. It's a manageable one-day drive, perfect if you want to get to your destination without breaking up the trip.
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
128.4 miles from Flatonia, TX
A natural place for your longest stop of the day
, about 2h 35m into the drive
.
Main Roads
Road
Distance
Duration
I 35E
56.2 mi
58m
North Travis Avenue
48.6 mi
55m
South Main Street
48 mi
57m
Purple Heart Trail
33 mi
33m
North La Grange Street
20.1 mi
27m
North US Highway 77
17.3 mi
19m
North Central Expressway
16.6 mi
18m
South Jack Kultgen Expressway
3.8 mi
4m
Longest stretch:
I 35E
— 56.2 mi, about 58m
Turn-by-Turn Driving Directions
Step-by-step road directions between Flatonia, TX and Plano, TX.
1
Start on US 90; TX 95
442 ft·12 sec·West Main Street North
2
Continue on US 90; TX 95
0.4 mi·56 sec·West Main Street North
3
Turn left onto FM 609
20 mi·27 min·North La Grange Street
4
At end of road, turn right onto TX 71 Bus
1.6 mi·2 min·West Travis Street
5
Turn left onto US 77
2.0 mi·2 min·North Jefferson Street
6
Continue on US 77
17 mi·19 min·North US Highway 77
7
Continue on US 77
48 mi·57 min·South Main Street
8
At end of road, turn left onto US 77; US 190; TX 36
3.6 mi·4 min·US 77; US 190; TX 36
9
Turn right onto US 77
49 mi·55 min·North Travis Avenue
Use the right lane.
10
Enter roundabout onto Circle Road
215 ft·11 sec·Circle Road
11
Continue on Circle Road
0.4 mi·54 sec·Circle Road
12
Turn straight onto South Jack Kultgen Expressway
0.5 mi·58 sec·South Jack Kultgen Expressway
13
Take the ramp
444 ft·10 sec
Toward I 35 North, US 77 North
14
Continue on US 77
0.3 mi·34 sec·US 77
15
Merge onto I 35; US 77
3.3 mi·3 min·South Jack Kultgen Expressway
Use the straight / slight right lanes.
16
Continue on I 35; US 77
33 mi·33 min·Purple Heart Trail
Use the straight / slight right lanes.
17
Keep slight right at fork onto I 35E
56 mi·58 min·I 35E
Toward I 35E: DallasUse the slight right lane.
18
Take the exit
0.4 mi·41 sec
Exit 427AToward I 30 East: Texarkana, Riverfront Boulevard, Griffin StreetUse the slight right lane.
19
Keep slight left at fork
422 ft·5 sec
Toward I 35E North, I 30 West: Denton, Fort Worth, Texarkana
20
Keep slight right at fork
0.4 mi·32 sec
Toward I 30 East: Texarkana, Convention Center
21
Keep slight left at fork
385 ft·6 sec
Toward I 30 East: Texarkana
22
Continue on I 30; US 67
0.8 mi·1 min·East R L Thornton Freeway
23
Take the exit
0.5 mi·45 sec
Exit 46Toward I 45, US 75: Houston, McKinneyUse the slight right lane.
24
Keep slight left at fork
0.5 mi·1 min
Toward US 75 North: McKinneyUse the slight left lane.
25
Keep slight right at fork
0.3 mi·26 sec
Toward US 75 North: McKinney, Bryan Street East
26
Merge onto US 75
0.7 mi·49 sec·Julius Schepps Freeway
Use the straight / slight right lanes.
27
Continue on US 75
15 mi·16 min·North Central Expressway
Use the straight / right lanes.
28
Take the exit
0.4 mi·52 sec
Exit 28AToward Plano Parkway, 15th StreetUse the straight / slight right lanes.
29
Turn straight onto North Central Expressway
1.4 mi·2 min·North Central Expressway
Use the straight / left / right lanes.
30
Turn right onto East 15th Street
0.6 mi·1 min·East 15th Street
Use the straight / right lanes.
31
Arrive at destination
East 15th Street
Trip Plan
Given the 4h 55m estimated driving time, leaving Flatonia in the morning should get you to Plano with plenty of daylight to spare. With only one recommended stop, you have a lot of flexibility in pacing your drive. Keep an eye on your fuel, as the estimated cost is $39 for the 256.8 miles. Pay attention to local traffic patterns as you enter the Dallas-Fort Worth area, especially on North Travis Avenue and South Main Street, as congestion can add unexpected time to your travel.
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 128.4 miles from Flatonia, TX, or about 2h 35m into the drive.
The longest continuous stretch on this route runs about 56.2 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 56 miles or 1h 10m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 128.4 miles or 2h 35m 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 3m
Traffic, exits, and arrival timing usually matter more near Plano, TX than in the middle of the route.
Before You Leave
+
Open the route before leaving Flatonia, TX 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 Flatonia, TX
This is one driving day of about 256.8 miles and 4h 55m.
Your first comfortable stop window is around 56 miles from Flatonia, TX.
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 35E for about 56.2 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 20
5 decision points cluster between mile 179.4 and 254.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
179.4 mi into trip|~3h 31m in|I 35E
Keep slight right at fork onto I 35E toward I 35E: Dallas
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 35E: Dallas
8
235.5 mi into trip|~4h 29m in
Take the exit toward I 30 East: Texarkana, Riverfront Boulevard, Griffin Street
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 427A
Toward I 30 East: Texarkana, Riverfront Bouleva...
8
237.3 mi into trip|~4h 31m in
Take the exit toward I 45, US 75: Houston, McKinney
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 46
Toward I 45, US 75: Houston, McKinney
7
237.7 mi into trip|~4h 32m in
Keep slight left at fork toward US 75 North: McKinney
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward US 75 North: McKinney
8
254.4 mi into trip|~4h 51m in
Take the exit toward Plano Parkway, 15th Street
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 28A
Toward Plano Parkway, 15th Street
Fuel & Cost
Regular Gas
$38.80 one way
$77.61 round trip
$3.84/gal25.4 MPG avg90 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.20
$42.47
$84.95
premium
$4.54
$45.85
$91.70
diesel
$5.61
$56.70
$113.40
Estimated Tolls: $1.32
Central Expressway
(16.6 mi)$1.32
Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.
Estimated Trip Cost (one way, 1 person)
Fuel
$39
Tolls
$1
Meals
$25–$50
Total
$65–$90
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 89.8 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $27 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
77
0
$26.96
$12.33
Efficient EV
64.2
0
$22.47
$10.27
EV Truck/SUV
102.7
1
$35.95
$16.44
Gas CO2
90 kg
EV CO2
30 kg (67% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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 Apr 15, 2026
Origin
Flatonia, TX
Late night
in Flatonia on Sunday
Local time
5:10 AM
CDT
Current temp
64°F
Unavailable
Live forecast
Destination
Plano, TX
Late night
in Plano on Sunday
Local time
5:10 AM
CDT
Current temp
61°F
Unavailable
Live forecast
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 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 55m 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.
Waco Mammoth National Monument
National Monument
Standing as tall as 14 feet and weighing 20,000 pounds, Columbian mammoths roamed across what is present-day Texas thousands of years ago. Today, the fossil specimens represent the nation's first and...
5 mi from route
~14 min detour
Free
near mile 152.6
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
About 39% of this 256.8-mile drive is on highways, with the longest continuous stretch on I 35E covering 56.2 miles. You'll transition from highway to surface roads for the remaining portion of your trip. Be prepared for a more urban feel with frequent exits and traffic as you approach Plano.
39% highway, the rest on surface roads — varied driving throughout.
31 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 56.2 mi on I 35E.
How Hard Is This Drive?
9/10
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 179.4 miles in near I 35E.
Driving Effort9/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 20 significant decision points across 256.8 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 179.4 miles (I 35E): Highway fork - watch signs carefully. Lane positioning matters here; at 235.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 237.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Flatonia, TX and Plano, TX, road signs point toward Fort Worth, Texarkana, Convention Center, Mckinney and Bryan Street East.
Plano is a city of 285,000 people (2020) in the Dallas-Fort Worth Metroplex region of Texas and is north of Dallas. It is home to the headquarters of several large corporations.
Doable as a same-day drive at 4h 55m. Total distance: 256.8 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 55m drive, comfortable solo distance.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 56.2 miles on I 35E. The full list of main roads is in the Roads section above.
Expect about $1.32 in tolls one way, starting with Central Expressway. Most Northeast and Midwest toll agencies accept E-ZPass; in the West and Texas, transponders like TxTag or FasTrak apply. If you do not have a transponder, cashless tolling plates will mail a bill to the vehicle's registered address — usually with a surcharge, so a rental-car toll pass is often cheaper than paying by mail.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
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 Plano, TX 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. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 179.4 miles (I 35E): Highway fork - watch signs carefully. Lane positioning matters here; at 235.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 237.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Waco Mammoth National Monument. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.9 hours each way, an in-and-out day trip would put you behind the wheel for 9.9 hours — manageable with a long break at Plano, TX, but most travelers stay overnight.
