How far is Saint Peters, MO from St. Louis, MO?
The driving distance from Saint Peters, MO to St. Louis, MO is about 32 miles (51.5 km), with a travel time of about 00h 35m by car.
- The straight-line flight distance is about 26 miles (41.9 km).
- For a round trip, plan for roughly 01h 10m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 35m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Saint Louis County, Missouri, 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 Saint Peters and St. Louis.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Peters and St. Louis.
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1
Start on the route
1.2 mi · 1 min
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2
Take the exit slight right toward MO 79: Elsberry, Louisiana
725 ft · 15 sec
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3
Keep slight left to continue on MO 79
117 m · 15 sec
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4
Turn left
652 ft · 11 sec
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5
Take the ramp slight right toward I 70 East
1294 ft · 19 sec
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6
Merge slight left
20.1 mi · 25 min
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7
Take the exit slight right toward Bermuda Road
1578 ft · 24 sec
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8
Keep slight left to continue on I 70 East: Saint Louis
810 ft · 13 sec
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9
Merge slight left
6.8 mi · 9 min
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10
Continue on Andy Gammon Memorial Highway
1.5 mi · 2 min · Andy Gammon Memorial Highway
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11
Keep slight right to continue on Andy Gammon Memorial Highway
81 m · 7 sec · Andy Gammon Memorial Highway
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12
Take the exit slight right toward Tucker Boulevard, Downtown Saint Louis
1485 ft · 38 sec
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13
Continue on North Tucker Boulevard
1.1 mi · 3 min · North Tucker Boulevard
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14
Continue on South Tucker Boulevard
121 m · 22 sec · South Tucker Boulevard
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15
Turn right onto Market Street
26 m · 2 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 Saint Peters 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.
I 70 East
Merge slight left
20.1 mi · 00h 25m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Showers And Thunderstorms leaving Saint Peters 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 Saint Peters to St. Louis?
The road trip is about 32 miles (51.5 km) and usually takes 00h 35m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Saint Ann is a useful midpoint, sitting about 16 miles from Saint Peters and 16 miles from St. Louis.
How much longer is the road route than the straight-line distance?
The direct path is about 26 miles (41.9 km), while the road route adds roughly 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 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:20 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $4.26 one way or $8.52 round trip. Estimated CO2 is about 10 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Saint Peters and Showers And Thunderstorms Likely near St. Louis.
Stop Ideas Near Saint Ann
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 Saint Ann.
Kirkwood
Gateway Transportation Center
Alton
Washington
Flight Path Map
This map shows the direct air route between Saint Peters and St. Louis. Straight-line distance: 26.02 mi (41.87 km).
#1 Saint Peters
The most populous city in St.
| Population | 58,043 |
| Coordinates | 38.8003300, -90.6265100 |
| Altitude | 134 |
| 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: 51 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 03m |
| 40 mph (64.37 km/h) | 00h 47m |
| 50 mph (80.47 km/h) | 00h 38m |
| 60 mph (96.56 km/h) | 00h 31m |
| 70 mph (112.65 km/h) | 00h 27m |
| 80 mph (129 km/h) | 00h 23m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $4.26 | $8.52 |
| Mid-grade | $4.25 | $4.81 | $9.61 |
| Premium | $4.65 | $5.26 | $10.52 |
| Diesel | $5.30 | $5.99 | $11.99 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.