Origin
Saint Charles, MO
Late night in Saint Charles on Sunday
Local time
2:45 AM
CDT
Current temp
57°F
Unavailable
Live forecast
Trip from Saint Charles, MO to Saint John, MO
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
18m
Distance
11.4 mi
18 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$2
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 17m
★
6 AM
0h 19m
8 AM
0h 22m
10 AM
0h 20m
12 PM
0h 20m
3 PM
0h 20m
5 PM
0h 22m
8 PM
0h 18m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Saint Charles, MO
Wikimedia Commons
Saint John, MO
Erik Mclean
Trip Overview
This short, 11.4-mile drive from Saint Charles, MO to Saint John, MO is a quick trip that can easily be completed in about 18 minutes. It's a one-day excursion, so no overnight stays are necessary. The journey primarily utilizes major roads like I-70 and South Fifth Street, making it a straightforward drive. With a fuel cost estimated at just $2, it's an economical option for a quick local trip within the Midwest. You'll spend most of your time on the highway, so expect a consistent pace for this short hop.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 70 | 8.1 mi | 10m |
| South Fifth Street | 1.1 mi | 2m |
| Brown Road | 0.9 mi | 2m |
| Natural Bridge Road | 0.3 mi | <1m |
| Jefferson Street | 0.2 mi | <1m |
| North Second Street | 0.2 mi | <1m |
| Saint Louis Avenue | 0.1 mi | <1m |
| Mavis Place | <0.1 mi | <1m |
Longest stretch:
I 70
— 8.1 mi, about 10m
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Charles, MO and Saint John, MO.
1
Start on North Second Street
0.2 mi
·
38 sec
·
North Second Street
2
Turn right onto Jefferson Street
0.2 mi
·
44 sec
·
Jefferson Street
3
Turn left onto MO 94
1.1 mi
·
2 min
·
South Fifth Street
Use the straight / right lanes.
4
Take the ramp
0.2 mi
·
14 sec
Toward I 70 East
Use the left / straight lanes.
5
Merge onto I 70
8.1 mi
·
10 min
·
I 70
Use the straight lane.
6
Take the exit
0.2 mi
·
24 sec
Exit 237
Toward MO 115 East: Natural Bridge Road
Use the straight / slight right lanes.
7
Continue on MO 115
0.3 mi
·
35 sec
·
Natural Bridge Road
Use the straight / right lanes.
8
Turn right onto Brown Road
0.9 mi
·
2 min
·
Brown Road
9
Turn left onto Saint Louis Avenue
0.1 mi
·
27 sec
·
Saint Louis Avenue
10
Turn right onto Marshall Road
218 ft
·
14 sec
·
Marshall Road
11
Turn left onto Mavis Place
324 ft
·
14 sec
·
Mavis Place
12
Arrive at destination
Mavis Place
Heads-up: tricky spots
5 of 105 decision points cluster between mile 0.2 and 9.8 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
0.2 mi into trip
|
~0m in
|
Jefferson Street
Turn right onto Jefferson Street
Navigation decision point
6
0.4 mi into trip
|
~1m in
|
MO 94 / South Fifth Street
Turn left onto MO 94 / South Fifth Street
Lane positioning matters here
Use the straight / right lanes.
5
1.5 mi into trip
|
~4m in
Take the ramp toward I 70 East
Lane positioning matters here
Use the left / straight lanes.
Toward I 70 East
5
1.7 mi into trip
|
~4m in
|
I 70
Merge onto I 70
Merge point - match speed before joining. Lane positioning matters here
Use the straight lane.
7
9.8 mi into trip
|
~14m in
Take the exit toward MO 115 East: Natural Bridge Road
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 237
Toward MO 115 East: Natural Bridge Road
Fuel & Cost
Regular Gas
$1.78 one way
$3.56 round trip
$3.97/gal
25.4 MPG avg
4 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $1.96 | $3.91 |
| premium | $4.89 | $2.19 | $4.39 |
| diesel | $5.61 | $2.52 | $5.03 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$2
Estimated CO2 emission: 4 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $1 in charging · 0 stops · 75% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 3.4 | 0 | $1.20 | $0.55 |
| Efficient EV | 2.9 | 0 | $1.00 | $0.46 |
| EV Truck/SUV | 4.6 | 0 | $1.60 | $0.73 |
Gas CO2
4 kg
EV CO2
1 kg (75% 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
Saint John, MO
Late night in Saint John on Sunday
Local time
2:45 AM
CDT
Current temp
64°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
7 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
18m 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?
Expect a highway-focused drive for this route, with 71% of the journey taking place on major interstates and roads. The longest uninterrupted stretch you'll encounter is 8.1 miles on I-70, providing a good opportunity to settle into a steady cruising speed. While predominantly highway, the route does incorporate sections of South Fifth Street and Brown Road, offering a slight shift in the driving experience before rejoining faster thoroughfares. This blend means you'll experience both efficient highway travel and brief moments on more local arteries.
71% highway — fuel and pacing are the main things to plan.
12 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 8.1 mi on I 70.
How Hard Is This Drive?
5/10
This is a straightforward highway drive that stays mostly on I 70 and South Fifth Street. You will hit about 10 points where you need to pay attention to lane position or signs. The trickiest moment comes around 0.2 miles in near Jefferson Street.
Driving Effort
5/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 11.4 miles you will encounter 10 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 0.2 miles (Jefferson Street): Navigation decision point; at 0.4 miles (MO 94 / South Fifth Street): Lane positioning matters here; at 1.5 miles: Lane positioning matters here.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 18m. Total distance: 11.4 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
18m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (71%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 8.1 miles on I 70. The full list of main roads is in the Roads section above.
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 0.2 miles (Jefferson Street): Navigation decision point; at 0.4 miles (MO 94 / South Fifth Street): Lane positioning matters here; 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 Saint John, 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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