Origin
Saint Peters, MO
Afternoon in Saint Peters on Saturday
Local time
12:05 PM
CDT
Current temp
57°F
Unavailable
Live forecast
Trip from Saint Peters, MO to Brentwood, MO
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
37m
Distance
27.9 mi
45 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$4
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 34m
★
6 AM
0h 37m
8 AM
0h 44m
10 AM
0h 39m
12 PM
0h 39m
3 PM
0h 40m
5 PM
0h 43m
8 PM
0h 35m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Saint Peters, MO
Wikimedia Commons
Brentwood, MO
Valeria Boltneva
Trip Overview
Saint Peters, MO to Brentwood, MO is 27.9 miles and takes about 37 minutes via I 70, with a fuel budget near $4 and enough daylight to finish in a day. This short drive stays within the Midwest region and the state of Missouri, making it a straightforward local trip. You'll primarily be on interstate highways, so expect a consistent pace. It’s a quick hop that’s perfect for a day trip or a simple relocation.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 37m. Total distance: 27.9 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
37m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (81%). Some complex stretches to watch for.
Drive Character
This route is heavily focused on highway driving, with 81% of the journey taking place on interstates. You'll experience a longest uninterrupted stretch of 13 miles on I 70, offering a chance to settle into a steady pace. The drive will primarily consist of high-speed travel, so keep an eye on your speed limits. Expect the character of the road to remain largely consistent, given its short length and interstate focus.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 23 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 70 is the longest continuous segment at about 13 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 70 and I 270. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 1.2 miles in.
Driving Effort
10/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 18 decision points packed into just 27.9 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 37m.
Where does it get tricky?
The main spots that need attention: at 1.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 13.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 21.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 18 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
8
1.2 mi into trip
|
~1m in
Take the exit toward MO 79: Elsberry, Louisiana
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 220
Toward MO 79: Elsberry, Louisiana
8
13.6 mi into trip
|
~17m in
Take the exit toward I 270: Chicago, Memphis
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 232
Toward I 270: Chicago, Memphis
8
21.2 mi into trip
|
~26m in
Take the exit toward I 64, US 40, US 61: Saint Louis, Wentzville
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 12
Toward I 64, US 40, US 61: Saint Louis, Wentzvi...
8
21.4 mi into trip
|
~27m in
Keep slight left at fork toward I 64 East, US 40 East, US 61 South: Saint Louis
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight left lane.
Toward I 64 East, US 40 East, US 61 South: Sain...
9
21.9 mi into trip
|
~28m in
Keep slight left at fork toward I 64, US 40, US 61: Saint Louis
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight lane.
Toward I 64, US 40, US 61: Saint Louis
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Saint Peters, MO and Brentwood, MO, road signs point toward Memphis and Wentzville.
Memphis
13.6 mi in
|
~17m
Wentzville
21.2 mi in
|
~26m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 70 | 13 mi | 16m |
| I 270 | 6.9 mi | 8m |
| Daniel Boone Expressway | 2.6 mi | 3m |
| Avenue of the Saints | 1.4 mi | 1m |
| South McKnight Road | 0.7 mi | 1m |
| Litzsinger Road | 0.7 mi | 1m |
| MO 79 | 0.1 mi | <1m |
Longest stretch:
I 70
— 13 mi, about 16m
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Peters, MO and Brentwood, MO.
1
Start on I 70
1.2 mi
·
1 min
·
I 70
2
Take the exit
0.1 mi
·
15 sec
Exit 220
Toward MO 79: Elsberry, Louisiana
Use the straight / slight right lanes.
3
Keep slight left at fork
384 ft
·
14 sec
Toward MO 79
4
Turn left onto MO 79
0.1 mi
·
11 sec
·
MO 79
5
Take the ramp
0.2 mi
·
18 sec
Toward I 70 East
Use the right lane.
6
Merge onto I 70
12 mi
·
14 min
·
I 70
Use the straight / slight right lanes.
7
Take the exit
0.2 mi
·
12 sec
Exit 232
Toward I 270: Chicago, Memphis
Use the slight right lane.
8
Keep slight right at fork
0.4 mi
·
33 sec
Toward I 270 South: Memphis
Use the slight right lane.
9
Continue on this road
0.1 mi
·
10 sec
·
this road
Exit 232
Toward I 270 South: Memphis
10
Merge onto I 270
6.9 mi
·
8 min
·
I 270
Use the straight lane.
11
Take the exit
0.2 mi
·
17 sec
Exit 12
Toward I 64, US 40, US 61: Saint Louis, Wentzville
Use the slight right lane.
12
Keep slight left at fork
0.4 mi
·
41 sec
Toward I 64 East, US 40 East, US 61 South: Saint Louis
Use the slight left lane.
13
Continue on this road
0.2 mi
·
21 sec
·
this road
Exit 12
Toward I 64 East, US 40 East, US 61 South: Saint Louis
14
Keep slight left at fork
0.2 mi
·
13 sec
Toward I 64, US 40, US 61: Saint Louis
Use the straight lane.
15
Continue on this road
0.1 mi
·
9 sec
·
this road
Exit 12
Toward I 64 East, US 40 East, US 61 South: Saint Louis
16
Merge onto I 64; US 40; US 61
1.4 mi
·
1 min
·
Avenue of the Saints
17
Continue on I 64; US 40
2.6 mi
·
3 min
·
Daniel Boone Expressway
Use the straight lane.
18
Take the exit
0.2 mi
·
23 sec
Exit 30
Toward McKnight Road
Use the slight right lane.
19
Turn right onto South McKnight Road
0.7 mi
·
1 min
·
South McKnight Road
20
Turn left onto Litzsinger Road
0.7 mi
·
1 min
·
Litzsinger Road
Use the left lane.
21
Turn right
59 ft
·
9 sec
22
Turn left
68 ft
·
4 sec
23
Arrive at destination
Fuel & Cost
Regular Gas
$4.36 one way
$8.72 round trip
$3.97/gal
25.4 MPG avg
10 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $4.79 | $9.58 |
| premium | $4.89 | $5.37 | $10.74 |
| diesel | $5.61 | $6.16 | $12.32 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$4
Estimated CO2 emission: 9.8 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $3 in charging · 0 stops · 70% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 8.4 | 0 | $2.93 | $1.34 |
| Efficient EV | 7 | 0 | $2.44 | $1.12 |
| EV Truck/SUV | 11.2 | 0 | $3.91 | $1.79 |
Gas CO2
10 kg
EV CO2
3 kg (70% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
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.
Destination
Brentwood, MO
Afternoon in Brentwood on Saturday
Local time
12:05 PM
CDT
Current temp
78°F
Unavailable
Live forecast
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
21 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
37m on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Saint Peters, MO to Brentwood, MO covers 27.9 miles and takes about 37m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 70, I 270, Daniel Boone Expressway. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 13.9 miles from Saint Peters, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $4.36 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This is a short but busy drive. With 18 decision points packed into just 27.9 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 37m.
The main spots that need attention: at 1.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 13.6 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 21.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Between Saint Peters, MO and Brentwood, MO, road signs point toward Memphis and Wentzville.
Yes. Nearby national parks include Gateway Arch National Park.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.
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