Origin
Saint Peters, MO
Morning in Saint Peters on Sunday
Local time
6:31 AM
CDT
Current temp
57°F
Unavailable
Live forecast
Trip from Saint Peters, MO to Dellwood, MO
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
32m
Distance
24.4 mi
39 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$4
one way
EV Charging
Fair
4 stations
Best Time to Leave
4 AM
0h 30m
★
6 AM
0h 32m
8 AM
0h 38m
10 AM
0h 34m
12 PM
0h 34m
3 PM
0h 34m
5 PM
0h 37m
8 PM
0h 31m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Saint Peters, MO
Wikimedia Commons
Dellwood, MO
Momo King
Trip Overview
Saint Peters, MO to Dellwood, MO is 24.4 miles and takes about 32 minutes via I 70, with a fuel budget near $4 and enough daylight to finish in a day. This short hop stays within the Midwest region, specifically Missouri, making it a straightforward trip. You'll primarily be on interstate highways, so expect a quick transit. This route is ideal if you need to cover a short distance efficiently without venturing far from your starting point.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 70 | 19.3 mi | 24m |
| Airport Road | 1.8 mi | 2m |
| Inner Belt Expressway | 0.9 mi | 1m |
| Chambers Road | 0.7 mi | 1m |
| Hereford Avenue | 0.4 mi | <1m |
| MO 79 | 0.1 mi | <1m |
Longest stretch:
I 70
— 19.3 mi, about 24m
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Peters, MO and Dellwood, 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
18 mi
·
22 min
·
I 70
Use the straight / slight right lanes.
7
Take the exit
0.5 mi
·
1 min
Exit 238B
Toward I 170 North
Use the slight left lane.
8
Merge onto I 170
0.9 mi
·
1 min
·
Inner Belt Expressway
9
Take the exit
0.2 mi
·
20 sec
Exit 9A
Toward Airport Road
Use the slight right lane.
10
Turn right onto Airport Road
1.8 mi
·
2 min
·
Airport Road
11
Continue on Hereford Avenue
0.4 mi
·
39 sec
·
Hereford Avenue
12
Continue on Chambers Road
0.7 mi
·
1 min
·
Chambers Road
13
Arrive at destination
Chambers Road
Heads-up: tricky spots
5 of 85 decision points cluster between mile 1.2 and 21.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
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
6
1.3 mi into trip
|
~1m in
Keep slight left at fork toward MO 79
Highway fork - watch signs carefully
Toward MO 79
6
1.5 mi into trip
|
~2m in
Take the ramp toward I 70 East
Lane positioning matters here
Use the right lane.
Toward I 70 East
7
19.9 mi into trip
|
~25m in
Take the exit toward I 170 North
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight left lane.
Exit 238B
Toward I 170 North
7
21.3 mi into trip
|
~27m in
Take the exit toward Airport Road
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 9A
Toward Airport Road
Fuel & Cost
Regular Gas
$3.81 one way
$7.63 round trip
$3.97/gal
25.4 MPG avg
9 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $4.19 | $8.38 |
| premium | $4.89 | $4.70 | $9.39 |
| diesel | $5.61 | $5.39 | $10.77 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$4
Estimated CO2 emission: 8.5 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $3 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 7.3 | 0 | $2.56 | $1.17 |
| Efficient EV | 6.1 | 0 | $2.14 | $0.98 |
| EV Truck/SUV | 9.8 | 0 | $3.42 | $1.56 |
Gas CO2
9 kg
EV CO2
3 kg (67% 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
Dellwood, MO
Morning in Dellwood on Sunday
Local time
6:31 AM
CDT
Current temp
58°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
1 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
32m 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.
What kind of drive is this?
This drive is mostly highway, with 83% of the 24.4 miles on interstates like I 70. You'll experience a continuous stretch of 19.3 miles on I 70 before transitioning to surface roads. Expect a high number of exits and merges as you navigate this primarily interstate corridor.
83% highway — fuel and pacing are the main things to plan.
13 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 19.3 mi on I 70.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on I 70 and Airport Road. 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
8/10
Focused - busy navigation packed into a short drive
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 8 decision points packed into just 24.4 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 32m.
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 1.3 miles: Highway fork - watch signs carefully; at 1.5 miles: Lane positioning matters here.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 32m. Total distance: 24.4 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
32m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (83%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 19.3 miles on I 70. The full list of main roads is in the Roads section above.
Yes — we found about 2 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at Dellwood, MO before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
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 1.3 miles: Highway fork - watch signs carefully; at 1.5 miles: Lane positioning matters here.
Yes — Gateway Arch National Park. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at Dellwood, MO before heading back.
How this page is built
Compiled by the US Trip Planner 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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