How far is Troy, MO from St. Louis, MO?
The driving distance from Troy, MO to St. Louis, MO is about 56.2 miles (90.5 km), with a travel time of about 00h 56m by car.
- The straight-line flight distance is about 48.7 miles (78.3 km).
- For a round trip, plan for roughly 01h 52m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 00h 56m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Village in the United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between Troy and St. Louis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Troy and St. Louis.
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1
Start on the route
30 m · 12 sec
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2
At the end of the road, turn left onto 2nd Street
30 m · 7 sec · 2nd Street
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3
Turn right onto East Cherry Street
1042 ft · 21 sec · East Cherry Street
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4
Enter the roundabout and take exit 1 toward East Cherry Street
35 m · 3 sec · East Cherry Street
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5
Exit the roundabout onto East Cherry Street
2215 ft · 50 sec · East Cherry Street
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6
Turn left onto North Lincoln Drive
1177 ft · 24 sec · North Lincoln Drive
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7
Turn slight right
63 m · 8 sec
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8
Turn slight right
837 ft · 21 sec
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9
Take the ramp slight right toward US 61 South: Saint Louis
1011 ft · 15 sec
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10
Merge slight left onto Avenue of the Saints
42.7 mi · 52 min · Avenue of the Saints
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11
Continue on Daniel Boone Expressway
5.7 mi · 7 min · Daniel Boone Expressway
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12
Continue on Jack Buck Memorial Highway
5.8 mi · 7 min · Jack Buck Memorial Highway
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13
Take the exit slight right toward 14th Street
1115 ft · 34 sec
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14
Turn left onto South 14th Street
1715 ft · 42 sec · South 14th Street
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15
Turn right onto Market Street
956 ft · 25 sec · Market Street
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16
Arrive at your destination
0 m · 1 sec · Market Street
Car Route Details
A richer read on the saved driving route between Troy and St. Louis.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Avenue of the Saints
Merge slight left onto Avenue of the Saints
42.7 mi · 00h 53m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Showers And Thunderstorms leaving Troy and Showers And Thunderstorms Likely near St. Louis.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Troy to St. Louis?
The road trip is about 56.2 miles (90.5 km) and usually takes 00h 56m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Weldon Spring Heights is a useful midpoint, sitting about 28 miles from Troy and 28.2 miles from St. Louis.
How much longer is the road route than the straight-line distance?
The direct path is about 48.7 miles (78.3 km), while the road route adds roughly 7.5 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 4:38 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.47 one way or $14.93 round trip. Estimated CO2 is about 17.6 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Troy and Showers And Thunderstorms Likely near St. Louis.
Stop Ideas Near Weldon Spring Heights
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Park
City of O'Fallon
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Weldon Spring Heights.
Kirkwood
Washington
Gateway Transportation Center
Alton
Flight Path Map
This map shows the direct air route between Troy and St. Louis. Straight-line distance: 48.67 mi (78.33 km).
#1 Troy
City in Lincoln County, Montana, USA
| Population | 13,341 |
| Coordinates | 38.9794900, -90.9807000 |
| Altitude | 165 |
| 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: 91 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 52m |
| 40 mph (64.37 km/h) | 01h 24m |
| 50 mph (80.47 km/h) | 01h 07m |
| 60 mph (96.56 km/h) | 00h 56m |
| 70 mph (112.65 km/h) | 00h 48m |
| 80 mph (129 km/h) | 00h 42m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $7.47 | $14.93 |
| Mid-grade | $4.25 | $8.42 | $16.84 |
| Premium | $4.65 | $9.21 | $18.43 |
| Diesel | $5.30 | $10.50 | $21.00 |
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 · Apr 24, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.