Origin
Saint Peters, MO
Morning in Saint Peters on Thursday
Local time
11:57 AM
CDT
Current temp
57°F
Unavailable
Live forecast
Trip from Saint Peters, MO to Arnold, MO
Last recalculated Apr 16, 2026
Drive Time
51m
Distance
39.9 mi
64 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$6
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 47m
★
6 AM
0h 51m
8 AM
1h 0m
10 AM
0h 54m
12 PM
0h 53m
3 PM
0h 55m
5 PM
0h 59m
8 PM
0h 49m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Saint Peters, MO
Wikimedia Commons
Arnold, MO
Wikimedia Commons
Trip Overview
The drive from Saint Peters, MO to Arnold, MO covers 39.9 miles and takes about 51m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on MO 79, I 70 East, I 270 for much of the mileage, and the overall profile is turn-heavy local drive. At current regular gas prices, budget about $6.24 one way before food or hotel costs.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 51m. Total distance: 39.9 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
51m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (0%). Straightforward navigation.
Scenic Drive
Turn-heavy local drive route profile.
Drive Character
Expect a 51m drive with frequent turns across 39.9 miles of local and secondary roads.
This route has more turning and local-road decision points than a simple highway run.
There are about 21 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
MO 79 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. Navigation is very simple - set it and forget it for most of the drive.
Driving Effort
1/10
Very easy - short and simple to drive
Balances navigation complexity with total wheel time.
The drive from Saint Peters, MO to Arnold, MO is easy. At 51m with 0% highway, most drivers will find it relaxed and low-stress.
Where does it get tricky?
This route does not have any notably tricky sections. Most of the drive from Saint Peters, MO to Arnold, MO is straightforward, with well-signed roads and simple exits.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| MO 79 | — | — |
| I 70 East | — | — |
| I 270 | — | — |
| I 270 South | — | — |
| I 55 | — | — |
| I 55 South | — | — |
| Rosa Parks Highway | — | — |
| Officer Thomas G | — | — |
Some road-level metrics are being recalculated.
Longest stretch:
MO 79
— detailed segment metrics are refreshing.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Peters, MO and Arnold, MO.
1
Start on the route
1.2 mi
·
1 min
·
the route
2
Take the exit slight right toward MO 79: Elsberry, Louisiana
0.1 mi
·
15 sec
·
MO 79: Elsberry, Louisiana
3
Keep slight left to continue on MO 79
384 ft
·
15 sec
·
MO 79
4
Turn left
0.1 mi
·
11 sec
5
Take the ramp slight right toward I 70 East
0.2 mi
·
19 sec
·
I 70 East
6
Merge slight left
12 mi
·
14 min
7
Take the exit slight right toward I 270: Chicago, Memphis
0.2 mi
·
12 sec
·
I 270: Chicago, Memphis
8
Keep slight right to continue on I 270 South: Memphis
0.4 mi
·
33 sec
·
I 270 South: Memphis
9
Continue on I 270 South: Memphis
0.1 mi
·
10 sec
·
I 270 South: Memphis
10
Merge slight left
19 mi
·
23 min
11
Take the exit slight right toward I 55, US 61, US 67: Saint Louis, Memphis, Lemay Ferry Road
0.4 mi
·
27 sec
·
I 55, US 61, US 67: Saint Louis, Memphis, Lemay Ferry Road
12
Keep slight right to continue on I 55 South: Memphis
0.4 mi
·
44 sec
·
I 55 South: Memphis
13
Merge slight left onto Rosa Parks Highway
1.5 mi
·
1 min
·
Rosa Parks Highway
14
Continue on Officer Thomas G. Smith, Jr. Memorial Highway
1.8 mi
·
2 min
·
Officer Thomas G. Smith, Jr. Memorial Highway
15
Continue on Police Officer Steven Jarvis Memorial Highway
0.9 mi
·
1 min
·
Police Officer Steven Jarvis Memorial Highway
16
Take the exit slight right toward MO 141: Arnold
0.2 mi
·
28 sec
·
MO 141: Arnold
17
Keep slight left to continue on MO 141 South: Arnold
440 ft
·
13 sec
·
MO 141 South: Arnold
18
Merge slight right
0.2 mi
·
14 sec
19
Continue straight
0.2 mi
·
21 sec
20
Turn right onto Jeffco Boulevard
0.9 mi
·
1 min
·
Jeffco Boulevard
21
Arrive at your destination
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 20 mi from Saint Peters, MO · 25m into the drive
Mid-route town
Meal stop
20 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 39.9 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 20 miles from Saint Peters, MO, which is a good place for a longer meal and fuel stop.
Arriving in Arnold, MO
Allow a few extra minutes for the final approach into Arnold, MO if you are unfamiliar with the area.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$6.24 one way
$12.48 round trip
$3.97/gal
25.4 MPG avg
14 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $6.85 | $13.70 |
| premium | $4.89 | $7.68 | $15.36 |
| diesel | $5.61 | $8.81 | $17.62 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$6
Estimated CO2 emission: 14 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $4 in charging · 0 stops · 64% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 12 | 0 | $4.19 | $1.92 |
| Efficient EV | 10 | 0 | $3.49 | $1.60 |
| EV Truck/SUV | 16 | 0 | $5.59 | $2.55 |
Gas CO2
14 kg
EV CO2
5 kg (64% 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
Arnold, MO
Morning in Arnold on Thursday
Local time
11:57 AM
CDT
Current temp
57°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
Very similar conditions
Both ends of the route are sitting at about the same temperature right now.
Road read
51m 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 Arnold, MO covers 39.9 miles and takes about 51m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are MO 79, I 70 East, I 270. Expect a mix of highway and local road driving.
This is a comfortable same-day trip.
The midpoint is about 20 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 $6.24 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.
The drive from Saint Peters, MO to Arnold, MO is easy. At 51m with 0% highway, most drivers will find it relaxed and low-stress.
This route does not have any notably tricky sections. Most of the drive from Saint Peters, MO to Arnold, MO is straightforward, with well-signed roads and simple exits.
The route from Saint Peters, MO to Arnold, MO does not surface many named destination signs beyond the main corridor.
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