How far is Sullivan City, TX from Montopolis, TX?

The driving distance from Sullivan City, TX to Montopolis, TX is about 345.3 miles (555.7 km), with a travel time of about 05h 21m by car.

  • The straight-line flight distance is about 279.1 miles (449.2 km).
  • For a round trip, plan for roughly 10h 42m of driving time before adding stops, traffic, or weather delays.
  • A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
Trip Tools

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.

Reverse Route
Quick Snapshot
Road
345.32 mi
05h 21m
Flight
279.1 mi
449.17 km direct

This drive is better planned with a longer stop or an overnight stay.

Learn Distance

Choose another destination from Sullivan City.

Flight Distance

Direct air line
279.1 mi
Kilometers
449.17 km
Flight Time
00h 33m

Driving Distance

Road route
345.32 mi
Kilometers
555.74 km
Drive Time
05h 21m

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 21m.

Arrival Snapshot
Arrive in Montopolis
Thu, Apr 23, 8:16 AM CDT
Return by in Sullivan City
Thu, Apr 23, 1:38 PM CDT
Useful when you're deciding between a quick errand, a day trip, or a longer stop.
Leave Sullivan City
2026-04-23T02:55
Arrive Montopolis
Thu, Apr 23, 8:16 AM CDT
Route Timing
05h 21m
One way by road
Best Departure Window
6:00 AM to 8:00 AM CDT
Leave early for more breathing room
Arrive between
11:21 AM to 1:21 PM CDT

An early departure helps you fit a real stop into the day without turning the return into a late-night drive.

Leave by
6:18 AM CDT
Keeps a same-day return open with about 04h 00m at the destination.
Back in Sullivan City
9:00 PM CDT
Early departure recommended

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.

Mid-route stop
Lake City
TX

Town in Texas, USA

From Sullivan City
162.2 mi
02h 40m
To Montopolis
183.1 mi
02h 40m

Route Weather Snapshot

Check the forecast at both ends before you head out.

Origin
93°F
Thursday

Mostly Sunny

Starts
Thu, Apr 23 6:00 AM CDT
Wind
7 to 13 mph SE
Destination
85°F
Thursday

Mostly Cloudy

Starts
Thu, Apr 23 6:00 AM CDT
Wind
5 to 10 mph S

Driving Route Map

The map below follows the saved road route between Sullivan City and Montopolis.

Turn-by-Turn Driving Directions

Step-by-step road directions between Sullivan City and Montopolis.

  1. 1

    Start on East Expressway 83

    33 m · 9 sec · East Expressway 83

  2. 2

    Continue on East Expressway 83

    2.4 mi · 3 min · East Expressway 83

  3. 3

    Keep slight left to continue on La Joya Bypass

    23.7 mi · 27 min · La Joya Bypass

  4. 4

    Take the exit slight right toward I 69C North, US 281: Edinburg

    1.6 km · 2 min

  5. 5

    Continue straight

    21.8 mi · 23 min

  6. 6

    Continue straight

    57.1 mi · 1 hr

  7. 7

    Keep slight right

    70.2 mi · 1 hr 20 min

  8. 8

    Keep slight left to continue on Nueces Street

    11.1 mi · 15 min · Nueces Street

  9. 9

    Turn right onto King David Drive

    31.8 mi · 39 min · King David Drive

  10. 10

    Continue on West Main Street

    1.2 km · 1 min · West Main Street

  11. 11

    Keep slight left to continue on East Main Street

    71 m · 4 sec · East Main Street

  12. 12

    Continue on Helena Road

    8.4 mi · 11 min · Helena Road

  13. 13

    Turn straight onto State Highway 80

    23.6 mi · 26 min · State Highway 80

  14. 14

    Continue on South Nixon Avenue

    1 mi · 2 min · South Nixon Avenue

  15. 15

    Continue on State Highway 80 North

    30.8 mi · 35 min · State Highway 80 North

  16. 16

    Continue on US 183

    10.1 mi · 12 min · US 183

  17. 17

    Continue on South Colorado Street

    4.9 mi · 9 min · South Colorado Street

  18. 18

    Continue on United States Highway 183

    1282 ft · 17 sec · United States Highway 183

  19. 19

    Keep slight left to continue on TX 130 Toll North: Austin, Waco

    2447 ft · 35 sec

  20. 20

    Merge slight left onto Pickle Parkway

    9.8 mi · 9 min · Pickle Parkway

  21. 21

    Take the exit slight right toward US 183 North: Austin

    1920 ft · 47 sec

  22. 22

    Continue on US Highway 183 South

    11.8 mi · 15 min · US Highway 183 South

  23. 23

    Continue on Bergstrom Expressway

    1.1 km · 41 sec · Bergstrom Expressway

  24. 24

    Take the exit slight right toward Loop 111: Cesar Chavez Street, 5th Street, 6th Street, 7th Street, Airport Boulevard

    2724 ft · 54 sec

  25. 25

    Keep slight right to continue on Airport Boulevard

    1278 ft · 34 sec · Airport Boulevard

  26. 26

    Continue on Airport Boulevard

    2658 ft · 43 sec · Airport Boulevard

  27. 27

    Continue on Ed Bluestein Boulevard

    552 ft · 9 sec · Ed Bluestein Boulevard

  28. 28

    Take the ramp straight toward 183 Toll South: Lockhart

    148 m · 12 sec

  29. 29

    Arrive at your destination

    0 m · 1 sec

Car Route Details

A richer read on the saved driving route between Sullivan City and Montopolis.

OSRM road route
Drive Character

Long-distance drive

This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.

Directions
29 steps
2 turns on the saved route
Ramps & Exits
5
1 merges, 4 ramps or exits
Navigation Density
8.4 / 100 mi
Decision points by distance
Main Roads
I 69C North
150 mi · 43%
King David Drive
31.8 mi · 9%
State Highway 80 North
30.8 mi · 9%
La Joya Bypass
23.7 mi · 7%
State Highway 80
23.6 mi · 7%
US Highway 183 South
11.8 mi · 3%
Longest Stretch

I 69C North

Keep slight right

70.2 mi · 01h 20m

Route Summary

A quick read on whether this route feels easy, ambitious, or worth planning around.

Trip Read

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.

Drive Time
05h 21m
Long day trip
Same-Day Return
10h 42m
Round-trip wheel time
Road vs Air
+66.2 mi
279.1 mi direct line
Halfway Stop
Lake City
02h 40m from Sullivan City
Leave By
6:18 AM CDT
Early departure recommended
Weather Watch

Mostly Sunny leaving Sullivan City and Mostly Cloudy near Montopolis.

Trip Questions

Direct answers travelers usually want before committing to the drive.

How long does it take to drive from Sullivan City to Montopolis?

The road trip is about 345.3 miles (555.7 km) and usually takes 05h 21m 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?

Lake City is a useful midpoint, sitting about 162.2 miles from Sullivan City and 183.1 miles from Montopolis.

How much longer is the road route than the straight-line distance?

The direct path is about 279.1 miles (449.2 km), while the road route adds roughly 66.2 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 6:18 AM CDT.

How much will gas cost for this route?

Using about 28.3 MPG, regular gas is estimated at $46.07 one way or $92.13 round trip. Estimated CO2 is about 108.3 kg one way.

What should you check before leaving?

Before you leave, expect Mostly Sunny around Sullivan City and Mostly Cloudy near Montopolis.

Flight Path Map

This map shows the direct air route between Sullivan City and Montopolis. Straight-line distance: 279.1 mi (449.17 km).

Sullivan City

#1 Sullivan City

City in Hidalgo County, Texas, United States

Population4,170
Coordinates26.2775700, -98.5636300
Altitude61
CountryUnited States
Photo coming soon

#2 Montopolis

This Travis County community, situated at an elevation of 469 feet, is known for its Colorado River industrial areas.

Population912,791
Coordinates30.2432700, -97.6905600
Altitude143
CountryUnited States
Start: US 83 North (-98.563625, 26.27758)
End: 183 Toll (-97.690637, 30.243248)

Estimated Travel Time

Distance: 556 km by road

SpeedTime
30 mph (48.3 km/h)11h 30m
40 mph (64.37 km/h)08h 38m
50 mph (80.47 km/h)06h 54m
60 mph (96.56 km/h)05h 45m
70 mph (112.65 km/h)04h 56m
80 mph (129 km/h)04h 18m

Fuel, Round Trip and CO2

Estimated fuel cost and emissions for this route.

One-way fuel
12.19 gal
46.13 L · about $46.07
Round trip
$92.13
24.38 gal · 92.26 L
Estimated CO2
108.3 kg one way
Round trip: 216.7 kg / 478 lb CO2, using regular gasoline.
Fuel$/galOne wayRound trip
Regular gas $3.78 $46.07 $92.13
Mid-grade $4.25 $51.83 $103.66
Premium $4.59 $55.96 $111.93
Diesel $3.99 $48.67 $97.35

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 Texas · Apr 23, 2026

There is no time difference between Sullivan City and Montopolis. The current time is 02:55:19.

Distance to Other Cities

Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.

How did we calculate? Place names are translated into coordinates. The Haversine formula calculates straight-line distance; driving distance uses road network data.