Origin
Merriam Woods, MO
Morning in Merriam Woods on Monday
Local time
11:07 AM
CDT
Current temp
58°F
Unavailable
Live forecast
Trip from Merriam Woods, MO to Saint Peters, MO
Drive Time
4h 1m
Distance
260.6 mi
419 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$40
one way
EV Charging
Loading...
station data
Best Time to Leave
4 AM
3h 48m
★
6 AM
4h 1m
8 AM
4h 27m
10 AM
4h 10m
12 PM
4h 8m
3 PM
4h 11m
5 PM
4h 26m
8 PM
3h 53m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Saint Peters, MO
Aleksandra Żmuda
Trip Overview
The drive from Merriam Woods, MO to Saint Peters, MO covers 260.6 miles and takes about 4h 1m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on Maybe Lake Road, Homestead Road, Old Trail Road for much of the mileage, and the overall profile is turn-heavy local drive. At current regular gas prices, budget about $39.58 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
130.3 miles from Merriam Woods, MO
A natural place for your longest stop of the day , about 2h into the drive .
Drive Character
Expect a 4h 1m drive with frequent turns across 260.6 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 35 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
Maybe Lake Road is one of the defining roads on this drive.
How Hard Is This Drive?
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way.
Route Complexity
3/10
Easy - simple navigation with a manageable amount of wheel time
This is a straightforward 4h 1m drive. You will face about 0 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
This route does not have any notably tricky sections. Most of the drive from Merriam Woods, MO to Saint Peters, MO is straightforward, with well-signed roads and simple exits.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| Maybe Lake Road | Unavailable | Refreshing |
| Homestead Road | Unavailable | Refreshing |
| Old Trail Road | Unavailable | Refreshing |
| American Legion Memorial Highway | Unavailable | Refreshing |
| Highway 65 | Unavailable | Refreshing |
| Schoolcraft Freeway | Unavailable | Refreshing |
| I 44 East | Unavailable | Refreshing |
| I 44 | Unavailable | Refreshing |
Per-road distance and duration are being refreshed from OSRM for this route.
Longest stretch:
Maybe Lake Road
— detailed segment metrics are refreshing.
Turn-by-Turn Driving Directions
Step-by-step road directions between Merriam Woods, MO and Saint Peters, MO.
1
Start on Deerfield Road
0.2 mi
·
58 sec
·
Deerfield Road
2
Turn right onto Maybe Lake Road
230 ft
·
13 sec
·
Maybe Lake Road
3
Turn left onto Homestead Road
0.1 mi
·
34 sec
·
Homestead Road
4
Turn left onto Old Trail Road
0.2 mi
·
51 sec
·
Old Trail Road
5
At the end of the road, turn right
4.6 mi
·
6 min
6
Continue straight
0.9 mi
·
1 min
7
Take the ramp slight right
0.2 mi
·
31 sec
8
Merge slight left onto American Legion Memorial Highway
1.3 mi
·
1 min
·
American Legion Memorial Highway
9
Continue on US Highway 65
12 mi
·
13 min
·
US Highway 65
10
Continue on American Legion Memorial Highway
11 mi
·
12 min
·
American Legion Memorial Highway
11
Continue on Schoolcraft Freeway
11 mi
·
13 min
·
Schoolcraft Freeway
12
Take the exit slight right toward I 44 East: Saint Louis
0.6 mi
·
55 sec
·
I 44 East: Saint Louis
13
Merge slight left
170 mi
·
3 hr 3 min
14
Take the exit slight right toward I 44 Business, MO 100 East: Gray Summit
0.2 mi
·
28 sec
·
I 44 Business, MO 100 East: Gray Summit
15
Turn left onto Manchester Road
13 mi
·
18 min
·
Manchester Road
16
Take the exit slight right toward MO 109
0.2 mi
·
31 sec
·
MO 109
17
Enter the roundabout and take exit 3 toward the route
223 ft
·
4 sec
·
the route
18
Exit the roundabout
515 ft
·
11 sec
19
Enter the roundabout and take exit 1 toward the route
98 ft
·
2 sec
·
the route
20
Exit the roundabout
0.4 mi
·
45 sec
21
Enter the roundabout and take exit 2 toward the route
95 ft
·
2 sec
·
the route
22
Exit the roundabout
4.3 mi
·
6 min
23
Enter the roundabout and take exit 2 toward South Eatherton Road
95 ft
·
1 sec
·
South Eatherton Road
24
Exit the roundabout onto South Eatherton Road
2.4 mi
·
4 min
·
South Eatherton Road
25
Continue on Olive Street Road
0.9 mi
·
1 min
·
Olive Street Road
26
Take the ramp left toward Chesterfield Airport Road
0.7 mi
·
1 min
·
Chesterfield Airport Road
27
Merge slight left onto Avenue of the Saints
2.7 mi
·
3 min
·
Avenue of the Saints
28
Take the exit slight right toward MO 94: Defiance, Saint Charles
0.2 mi
·
16 sec
·
MO 94: Defiance, Saint Charles
29
Keep slight right to continue on MO 94 East: Saint Charles
312 ft
·
5 sec
·
MO 94 East: Saint Charles
30
Merge slight left
3.4 mi
·
4 min
31
Keep slight right to continue on Mid Rivers Mall Drive, Pitman Hill Road
0.2 mi
·
22 sec
·
Mid Rivers Mall Drive, Pitman Hill Road
32
Turn left onto Mid Rivers Mall Drive
4.7 mi
·
9 min
·
Mid Rivers Mall Drive
33
Take the ramp straight toward I 70 West: Wentzville
0.3 mi
·
20 sec
·
I 70 West: Wentzville
34
Merge slight left
479 ft
·
7 sec
35
Arrive at your destination
Trip Plan
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 130.3 miles from Merriam Woods, MO, or about 2h into the drive.
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 80 miles or 1h 13m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 130.3 miles or 2h in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 17m
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 Merriam Woods, 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 Merriam Woods, MO
This is one driving day of about 260.6 miles and 4h 1m.
Your first comfortable stop window is around 80 miles from Merriam Woods, 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.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 130.3 mi from Merriam Woods, MO · 2h into the drive
Mid-route town
Meal stop
130 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 80 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 130.3 miles from Merriam Woods, MO, which is a good place for a longer meal and fuel stop.
Arriving in Saint Peters, MO
The final approach into Saint Peters, MO usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around Saint Peters, MO.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$39.58 one way
$79.16 round trip
$3.86/gal
25.4 MPG avg
91 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.25 | $43.64 | $87.27 |
| premium | $4.80 | $49.20 | $98.39 |
| diesel | $5.64 | $57.90 | $115.79 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$40
Meals
$25–$50
Total
$65–$90
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 91.2 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $27 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 78.2 | 0 | $27.36 | $12.51 |
| Efficient EV | 65.2 | 0 | $22.80 | $10.42 |
| EV Truck/SUV | 104.2 | 1 | $36.48 | $16.68 |
Gas CO2
91 kg
EV CO2
30 kg (67% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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
Saint Peters, MO
Morning in Saint Peters on Monday
Local time
11:07 AM
CDT
Current temp
54°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
4 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
4h 1m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Merriam Woods, MO to Saint Peters, MO covers 260.6 miles and takes about 4h 1m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are Maybe Lake Road, Homestead Road, Old Trail Road. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 130.3 miles from Merriam Woods, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $39.58 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. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This is a straightforward 4h 1m drive. You will face about 0 decision points, but nothing that requires special attention if you follow navigation.
This route does not have any notably tricky sections. Most of the drive from Merriam Woods, MO to Saint Peters, MO is straightforward, with well-signed roads and simple exits.
The route from Merriam Woods, MO to Saint Peters, MO does not surface many named destination signs beyond the main corridor.
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Return Trip
Saint Peters, MO to Merriam Woods, MOPlan the drive back the other way.
249.5 mi
4h 54m
Continue From Saint Peters, MO
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