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Trip from Arnold, MO to St. Louis, MO

Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards

Drive Time

25m

Distance

18.3 mi

30 km

Drive Score

6/10

Good drive

Same Day?

Yes, doable

Fuel Cost

$3

one way

EV Charging

Unknown

Best Time to Leave

Save up to 6 min
4 AM
0h 24m ★
6 AM
0h 26m
8 AM
0h 30m
10 AM
0h 28m
12 PM
0h 27m
3 PM
0h 28m
5 PM
0h 30m
8 PM
0h 25m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly
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Download GPX
city in Jefferson County, Missouri, United States

Arnold, MO

Wikimedia Commons

Trip Overview

Arnold, MO to St. Louis, MO is 18.3 miles and takes about 25m via Rosa Parks Highway, with a fuel budget near $3 and enough daylight to finish in a day. This short Midwest journey keeps you within Missouri, offering a straightforward connection between two points. Expect a local driving experience rather than a high-speed interstate cruise. Given the minimal distance and time, this route is ideal for a same-day trip, allowing plenty of flexibility for when you choose to depart or if you decide to make unscheduled stops along the way.

Main Roads

Road Distance Duration
Rosa Parks Highway 12.5 mi 15m
Officer Thomas G. Smith, Jr. Memorial Highway 1.9 mi 2m
South Tucker Boulevard 1.3 mi 3m
Jeffco Boulevard 0.9 mi 1m
Police Officer Steven Jarvis Memorial Highway 0.9 mi 1m
MO 141 0.2 mi <1m
Gravois Avenue 0.2 mi <1m
Market Street <0.1 mi <1m
Longest stretch: Rosa Parks Highway — 12.5 mi, about 15m

Turn-by-Turn Driving Directions

Step-by-step road directions between Arnold, MO and St. Louis, MO.

1

Start on US 61; US 67

0.9 mi · 1 min · Jeffco Boulevard
Use the left lane.
2

Turn left onto MO 141

0.2 mi · 27 sec · MO 141
Use the left lane.
3

Take the ramp

0.2 mi · 30 sec
Toward I 55 North
4

Merge onto I 55

0.9 mi · 1 min · Police Officer Steven Jarvis Memorial Highway
5

Continue on I 55

1.9 mi · 2 min · Officer Thomas G. Smith, Jr. Memorial Highway
6

Continue on I 55

12 mi · 15 min · Rosa Parks Highway
Use the straight / slight right lanes.
7

Take the exit

0.2 mi · 23 sec
Exit 207A Toward MO 30 East: Gravois Avenue Use the slight right lane.
8

Turn slight right onto Gravois Avenue

0.2 mi · 27 sec · Gravois Avenue
9

Continue on South Tucker Boulevard

1.3 mi · 3 min · South Tucker Boulevard
10

Turn right onto Market Street

86 ft · 2 sec · Market Street
11

Arrive at destination

Market Street

Heads-up: tricky spots

5 of 6

5 decision points cluster between mile 0 and 18.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.

3
0 mi into trip | ~0m in | US 61; US 67 / Jeffco Boulevard

Depart onto US 61; US 67 / Jeffco Boulevard

Lane positioning matters here

Use the left lane.
6
0.9 mi into trip | ~1m in | MO 141

Turn left onto MO 141

Lane positioning matters here

Use the left lane.
4
1.1 mi into trip | ~2m in

Take the ramp toward I 55 North

Navigation decision point

Toward I 55 North
7
16.6 mi into trip | ~21m in

Take the exit toward MO 30 East: Gravois Avenue

Exit ramp - move to the correct lane early. Lane positioning matters here

Use the slight right lane. Exit 207A Toward MO 30 East: Gravois Avenue
4
18.3 mi into trip | ~25m in | Market Street

Turn right onto Market Street

Navigation decision point

Fuel & Cost

Regular Gas

$2.86 one way

$5.72 round trip

$3.97/gal 25.4 MPG avg 6 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.36 $3.14 $6.28
premium $4.89 $3.52 $7.04
diesel $5.61 $4.04 $8.08

No toll roads detected on this route.

Drive Cost (one way)

Fuel

$3

Estimated CO2 emission: 6.4 kg one way. Prices: EIA weekly data, 2026-04-13.

Driving Electric?

About $2 in charging · 0 stops · 67% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 5.5 0 $1.92 $0.88
Efficient EV 4.6 0 $1.60 $0.73
EV Truck/SUV 7.3 0 $2.56 $1.17

Gas CO2

6 kg

EV CO2

2 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.

Forecast as of Apr 17, 2026

Origin

Arnold, MO

Night in Arnold on Saturday

Local time

11:15 PM

CDT

Current temp

86°F

Slight Chance Showers And Thunderstorms

S 13 mph 20% chance Live forecast

Flood Watch

Flood Watch issued April 17 at 11:35AM CDT by NWS Springfield MO

Flood Watch

Flood Watch issued April 17 at 11:29AM CDT until April 22 at 1:00AM CDT by NWS Springfield MO

Destination

St. Louis, MO

Night in St. Louis on Saturday

Local time

11:15 PM

CDT

Current temp

74°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

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

25m on the road

The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.

Weather data from the National Weather Service. Conditions may change; check closer to your travel date.

What kind of drive is this?

This route is characterized as a 'turn-heavy local drive,' with a 100% highway share, meaning you'll be navigating city streets and connecting roads for the entire trip. The longest uninterrupted stretch you'll encounter is 12.5 miles on Rosa Parks Highway. You'll mainly be on Rosa Parks Highway, Officer Thomas G. Smith, Jr. Memorial Highway, and South Tucker Boulevard. Be prepared for frequent changes in direction and speed as you transition between these named local routes.

Only 1% highway — the rest is turn-by-turn surface driving.
11 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 12.5 mi on Rosa Parks Highway.

How Hard Is This Drive?

4/10

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. The trickiest moment comes early in the drive near US 61; US 67 / Jeffco Boulevard.

Driving Effort 4/10

Easy - simple navigation with a manageable amount of wheel time

Balances navigation complexity with total wheel time.

This is a straightforward 25m drive. You will face about 6 decision points, but nothing that requires special attention if you follow navigation.

Where does it get tricky?

The main spots that need attention: near the start (US 61; US 67 / Jeffco Boulevard): Lane positioning matters here; at 0.9 miles (MO 141): Lane positioning matters here; at 1.1 miles: Navigation decision point.

About the Cities

Arriving in St. Louis, MO

Full guide →

The Gateway City of St. Louis is the epitome of the modern Midwestern metropolis. Missouri's second-largest city is vibrant but laid-back, populous but navigable, historic but still relevant. The city's planners have created an aesthetically beautiful city, with plenty of green space amidst buildings both old and new, framed by the majestic Mississippi and Missouri rivers. And capping it all is the world's tallest man-made monument, the beautiful and iconic Gateway Arch. St. Louis is a city of culture and surprisingly inexpensive. Among American cities, only Washington, D.C. has more free attractions for tourists and residents alike. Hotels, restaurants, and even parking garages avoid the premium pricing common in other big cities. Although often overlooked, St. Louis can be an affordable, educational, and fun family getaway.

City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).

Who Is This Route For?

Weekend Trip

Doable as a same-day drive at 25m. Total distance: 18.3 miles.

Family Friendly

Moderate complexity with 0 natural rest stops along the way.

Solo Traveler

25m drive, comfortable solo distance.

EV Driver

0 DC fast chargers along the route. Coverage: unknown.

First-Time Driver

Mostly highway driving (1%). Straightforward navigation.

Scenic Drive

Mostly surface roads route profile with national parks nearby.

Frequently Asked Questions

The longest stretch is about 12.5 miles on Rosa Parks Highway. 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: near the start (US 61; US 67 / Jeffco Boulevard): Lane positioning matters here; at 0.9 miles (MO 141): Lane positioning matters here; at 1.1 miles: Navigation decision point.

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 St. Louis, 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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