How far is Seymour, MO from St. Louis, MO?
The driving distance from Seymour, MO to St. Louis, MO is about 211.1 miles (339.7 km), with a travel time of about 03h 22m by car.
- The straight-line flight distance is about 173.5 miles (279.3 km).
- For a round trip, plan for roughly 06h 45m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
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.
This drive is better planned with a longer stop or an overnight stay.
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 03h 22m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
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.
City in Phelps County, Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Seymour and St. Louis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seymour and St. Louis.
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1
Start on West Washington Street
50 m · 13 sec · West Washington Street
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2
Turn left onto South Main Street
1218 ft · 30 sec · South Main Street
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3
Turn left onto West Clinton Avenue
1.1 mi · 2 min · West Clinton Avenue
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4
Continue on West Steel Street
597 ft · 19 sec · West Steel Street
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5
Turn left
4 mi · 5 min
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6
Turn right onto North Diggins Main Street
34 m · 11 sec · North Diggins Main Street
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7
Turn left onto West Springfield Avenue
131 m · 19 sec · West Springfield Avenue
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8
Continue straight
2456 ft · 2 min
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9
Turn right
12.2 mi · 18 min
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10
Turn right onto Commercial Street
1266 ft · 33 sec · Commercial Street
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11
Turn left onto South Pine Street
1.4 km · 2 min · South Pine Street
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12
Turn sharp left onto East Hubble Drive
1341 ft · 29 sec · East Hubble Drive
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13
Turn right onto North Marshall Street
1.3 km · 2 min · North Marshall Street
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14
Continue on North Marshall Road
1806 ft · 50 sec · North Marshall Road
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15
Enter the roundabout and take exit 2 toward the route
40 m · 3 sec
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16
Exit the roundabout
1124 ft · 28 sec
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17
Merge slight left
177.5 mi · 3 hr 14 min
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18
Continue on Police Officer Robert Stanze Memorial Highway
2.7 mi · 3 min · Police Officer Robert Stanze Memorial Highway
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19
Continue on Officer Michael Barwick Memorial Highway
3.5 mi · 4 min · Officer Michael Barwick Memorial Highway
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20
Continue on Officer David Haynes Memorial Highway
2.3 mi · 3 min · Officer David Haynes Memorial Highway
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21
Take the exit slight right toward Jefferson Avenue
924 ft · 22 sec
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22
Turn left onto South Jefferson Avenue
1.3 mi · 3 min · South Jefferson Avenue
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23
Turn right onto Market Street
1.6 km · 2 min · Market Street
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24
Arrive at your destination
0 m · 1 sec · Market Street
Car Route Details
A richer read on the saved driving route between Seymour and St. Louis.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
North Marshall Road
Merge slight left
177 mi · 03h 14m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
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.
Mostly Sunny leaving Seymour and Mostly Sunny near St. Louis.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seymour to St. Louis?
The road trip is about 211.1 miles (339.7 km) and usually takes 03h 22m 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?
Rolla is a useful midpoint, sitting about 104.6 miles from Seymour and 106.4 miles from St. Louis.
How much longer is the road route than the straight-line distance?
The direct path is about 173.5 miles (279.3 km), while the road route adds roughly 37.6 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 10:14 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $28.09 one way or $56.19 round trip. Estimated CO2 is about 66.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Seymour and Mostly Sunny near St. Louis.
Stop Ideas Near Rolla
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 Rolla.
Jefferson City
Hermann
Washington
Flight Path Map
This map shows the direct air route between Seymour and St. Louis. Straight-line distance: 173.54 mi (279.29 km).
#1 Seymour
City in Missouri, United States
| Population | 2,022 |
| Coordinates | 37.1464400, -92.7687800 |
| Altitude | 501 |
| Country | United States |
#2 St. Louis
The second most populous city in Missouri and the center of the St.
| Population | 315,685 |
| Coordinates | 38.6272700, -90.1978900 |
| Altitude | 142 |
| Country | United States |
End: Market Street (-90.197859, 38.627348)
Estimated Travel Time
Distance: 340 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 01m |
| 40 mph (64.37 km/h) | 05h 16m |
| 50 mph (80.47 km/h) | 04h 13m |
| 60 mph (96.56 km/h) | 03h 31m |
| 70 mph (112.65 km/h) | 03h 00m |
| 80 mph (129 km/h) | 02h 37m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $28.09 | $56.19 |
| Mid-grade | $4.25 | $31.68 | $63.37 |
| Premium | $4.65 | $34.67 | $69.34 |
| Diesel | $5.30 | $39.51 | $79.03 |
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 Missouri · May 25, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.