La Plata, MO to Saint Peters, MO is 167.5 miles and takes about 3h 20m via Avenue of the Saints, with a fuel budget near $26 and enough daylight to finish in a day. This drive stays within Missouri, taking you from the Midwest region to another part of the Midwest. You'll find it's a fairly straightforward trip, primarily on well-maintained highways, making it a good option if you're looking for an efficient way to get between these two points without a major time commitment. Consider this route for its ease and predictability.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
83.7 miles from La Plata, MO
A natural place for your longest stop of the day
, about 1h 39m into the drive
.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 3h 20m. Total distance: 167.5 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 20m drive, comfortable solo distance.
Scenic Drive
Mixed drive route profile with national parks nearby.
Drive Character
This trip offers a mixed drive experience, with 43% of the route on highways. You'll encounter the Avenue of the Saints for a substantial stretch, including the longest uninterrupted segment of 73.7 miles. Expect a blend of faster highway driving and potentially some more local road sections as you progress toward Saint Peters. The nature of the drive shifts, so be prepared for varying speed limits and road conditions throughout the 167.5 miles.
Expect a mix of faster highway mileage and slower local approaches near the beginning or end.
There are about 21 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Avenue of the Saints is the longest continuous segment at about 73.7 miles.
How Hard Is This Drive?
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 19.9 miles in.
Driving Effort8/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 16 significant decision points across 167.5 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 19.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 155.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 166.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Critical Maneuvers
5 of 16 key points
These are the spots where you need to pay the most attention. Preview them before you drive.
6
19.9 mi into trip|~23m in
Take the exit toward US 36 East, MO 110 East: Hannibal
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward US 36 East, MO 110 East: Hannibal
6
155.4 mi into trip|~3h 4m in
Take the exit toward I 70 East: Saint Louis
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight left / straight lanes.
Toward I 70 East: Saint Louis
7
166.9 mi into trip|~3h 19m in
Take the exit toward Mid Rivers Mall Drive
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 222A
Toward Mid Rivers Mall Drive
8
167 mi into trip|~3h 19m in
Keep slight left at fork toward Mid Rivers Mall Drive
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward Mid Rivers Mall Drive
6
167.1 mi into trip|~3h 19m in
Take the ramp toward I 70 West: Wentzville
Lane positioning matters here
Use the slight left lane.
Toward I 70 West: Wentzville
Main Roads
Road
Distance
Duration
Avenue of the Saints
73.7 mi
1h 27m
Chicago-Kansas City Expressway
52.9 mi
1h 1m
US 63
19 mi
21m
Dwight D Eisenhower Highway
10.9 mi
13m
V.F.W. Memorial Highway
5.8 mi
6m
Veterans Road
2.1 mi
3m
East Clark Street
0.7 mi
1m
Paris Gravel Road
0.5 mi
1m
Longest stretch:
Avenue of the Saints
— 73.7 mi, about 1h 27m
Turn-by-Turn Driving Directions
Step-by-step road directions between La Plata, MO and Saint Peters, MO.
1
Start on East Moore Street
20 ft·6 sec·East Moore Street
2
Turn left onto South Gex Street
0.2 mi·42 sec·South Gex Street
3
Turn left onto MO 156
0.7 mi·1 min·East Clark Street
4
Turn right onto US 63
19 mi·21 min·US 63
5
Take the exit
0.2 mi·12 sec
Toward US 36 East, MO 110 East: Hannibal
6
Merge onto US 36; MO 110
53 mi·1 hr 1 min·Chicago-Kansas City Expressway
7
Continue on US 24; US 36; MO 110
5.8 mi·6 min·V.F.W. Memorial Highway
8
Take the exit
0.2 mi·30 sec
Toward Veterans Road
9
Turn right onto Veterans Road
2.1 mi·3 min·Veterans Road
10
At end of road, turn left onto County Road 422
279 ft·6 sec·County Road 422
11
Continue on Paris Gravel Road
0.5 mi·1 min·Paris Gravel Road
12
Take the ramp
120 ft·3 sec
13
Merge onto US 61
74 mi·1 hr 27 min·Avenue of the Saints
Use the right lane.
14
Take the exit
0.5 mi·51 sec
Toward I 70 East: Saint LouisUse the slight left / straight lanes.
15
Merge onto I 70
11 mi·13 min·Dwight D Eisenhower Highway
Use the straight / slight right lanes.
16
Take the exit
0.2 mi·19 sec
Exit 222AToward Mid Rivers Mall DriveUse the straight / slight right lanes.
17
Keep slight left at fork
205 ft·4 sec
Toward Mid Rivers Mall DriveUse the slight left lane.
18
Turn straight onto Mid Rivers Mall Drive
198 ft·5 sec·Mid Rivers Mall Drive
19
Take the ramp
0.3 mi·20 sec
Toward I 70 West: WentzvilleUse the slight left lane.
20
Merge onto I 70
479 ft·6 sec·I 70
21
Arrive at destination
I 70
Trip Plan
Since this is a one-day drive totaling just over 3 hours, you have flexibility with your departure time. Leaving in the morning will give you plenty of daylight to reach Saint Peters. You'll encounter one recommended stop, which is a good opportunity to stretch your legs and refuel. Keep an eye on your fuel gauge, especially during the 73.7-mile stretch on the Avenue of the Saints, as services might be less frequent during that segment. The estimated fuel cost is around $26, so plan accordingly.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 83.7 miles from La Plata, MO, or about 1h 39m into the drive.
The longest continuous stretch on this route runs about 73.7 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 37 miles or 43m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 83.7 miles or 1h 39m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 43m
Traffic, exits, and arrival timing usually matter more near Saint Peters, MO than in the middle of the route.
Before You Leave
+
Open the route before leaving La Plata, MO so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from La Plata, MO
This is one driving day of about 167.5 miles and 3h 20m.
Your first comfortable stop window is around 37 miles from La Plata, MO.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on Avenue of the Saints for about 73.7 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 83.7 mi from La Plata, MO
· 1h 39m into the drive
Place data sourced from public business listings. Hours and availability may vary.
National Parks Near This Route
Worth a detour if your schedule allows.
Gateway Arch National Park
National Park
Gateway Arch National Park commemorates President Jefferson’s vision of a continental nation, the individuals and cultural groups who helped shape its history, St. Louis’ role in westward expansion, a...
26 mi from route
~66 min detour
$19
near mile 165.3
Park data from the National Park Service API. Alerts update every 2 hours.
Fuel & Cost
Regular Gas
$26.19 one way
$52.37 round trip
$3.97/gal25.4 MPG avg59 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$28.75
$57.50
premium
$4.89
$32.23
$64.47
diesel
$5.61
$36.98
$73.96
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$26
Meals
$25–$50
Total
$51–$76
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 58.6 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $18 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
50.3
0
$17.59
$8.04
Efficient EV
41.9
0
$14.66
$6.70
EV Truck/SUV
67
0
$23.45
$10.72
Gas CO2
59 kg
EV CO2
20 kg (66% 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.
Forecast as of Apr 15, 2026
Origin
La Plata, MO
Afternoon
in La Plata on Friday
Local time
1:47 PM
CDT
Current temp
69°F
Unavailable
Live forecast
Destination
Saint Peters, MO
Afternoon
in Saint Peters on Friday
Local time
1:47 PM
CDT
Current temp
57°F
Unavailable
Live forecast
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
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
12 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
3h 20m 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 La Plata, MO to Saint Peters, MO covers 167.5 miles and takes about 3h 20m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Avenue of the Saints, Chicago-Kansas City Expressway, US 63. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 83.7 miles from La Plata, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $26.19 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. A short stop every 2 to 3 hours is enough for this drive.
This is a demanding drive. With 16 significant decision points across 167.5 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
The main spots that need attention: at 19.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one; at 155.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 166.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
The route from La Plata, MO to Saint Peters, MO does not surface many named destination signs beyond the main corridor.
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.
