Trip from St. Marys, GA to Johns Creek, GA

Data updated 0 seconds ago

Drive Time

6h 49m

Distance

364.8 mi

587 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$57

one way

EV Charging

station data

Best Time to Leave

Save up to 35 min

4 AM

6h 38m ★

6 AM

6h 49m

8 AM

7h 13m

10 AM

6h 58m

12 PM

6h 55m

3 PM

6h 59m

5 PM

7h 12m

8 PM

6h 42m

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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St. Marys, GA

Tom Fisk

city in Fulton County, Georgia, United States

Johns Creek, GA

Wikimedia Commons

Trip Overview

This 364.8-mile drive from St. Marys to Johns Creek, Georgia, is an achievable one-day trip, taking approximately 6 hours and 49 minutes. It's a highway-focused experience, with 90% of the journey on major roads, making it efficient for covering ground. The estimated fuel cost for this trip is $57, which is quite reasonable for the distance. Given its duration and highway profile, this route is best suited for a single day of travel. You'll be staying within the Southeast region for the entirety of your journey, primarily on established interstate routes. This trip offers a straightforward way to get from point A to point B without extensive detours.

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

182.4 miles from St. Marys, GA

A natural place for your longest stop of the day , about 3h 21m into the drive .

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Drive Character

Expect a predominantly highway-focused drive on this route, with 90% of your travel on major roads. The longest uninterrupted stretch you'll encounter is 155.9 miles along the Jim Gillis Historic Savannah Parkway, offering a significant period of consistent travel. You'll spend a good portion of your time on I-95 and I-75, which are known for their efficiency in covering long distances. While this means a focus on speed and directness, it also suggests a less varied driving experience compared to routes with more local roads. The character of the drive is largely about making good time on well-maintained highways.

Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.

There are about 23 navigation steps in the underlying route data, so the final approach matters more than the middle miles.

Jim Gillis Historic Savannah Parkway is the longest continuous segment at about 155.9 miles.

How Hard Is This Drive?

This is a straightforward highway drive that stays mostly on Jim Gillis Historic Savannah Parkway and I 95. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 103.7 miles in.

Route Complexity 9/10

High effort - long or complex enough to need steady focus all day

This is a demanding drive. With 17 significant decision points across 364.8 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.

Where does it get tricky?

The main spots that need attention: at 103.7 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 322.9 miles (I 675 / Terrell Starr Parkway): Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one; at 333 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.

Critical Maneuvers

5 of 17 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

103.7 mi into trip | ~1h 56m in

Take the exit toward I 16 West: Macon

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

Use the slight right lane. Exit 99B Toward I 16 West: Macon

322.9 mi into trip | ~5h 53m in | I 675 / Terrell Starr Parkway

Keep slight right at fork onto I 675 / Terrell Starr Parkway toward I 675 North: Augusta, Greenville

Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one

Use the straight / slight right lanes. Exit 227 Toward I 675 North: Augusta, Greenville

333 mi into trip | ~6h 5m in

Keep slight right at fork toward I 285 East: Augusta, Greenville

Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one

Use the slight left / slight right lanes. Toward I 285 East: Augusta, Greenville

354 mi into trip | ~6h 30m in

Keep slight right at fork toward GA 141 North: Peachtree Boulevard

Highway fork - watch signs carefully. Lane positioning matters here

Use the slight right lane. Toward GA 141 North: Peachtree Boulevard

357.9 mi into trip | ~6h 36m in | GA 141

Keep slight left at fork onto GA 141 toward GA 141 North: Cumming, Dahlonega

Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one

Use the slight left / straight lanes. Toward GA 141 North: Cumming, Dahlonega

Towns Mentioned on Route Signs

Based on OSRM destination-sign hints, not a full list of every settlement the road passes.

Between St. Marys, GA and Johns Creek, GA, road signs point toward Savannah and Greenville.

Savannah

103.9 mi in | ~1h 57m | via I 16

Greenville

322.9 mi in | ~5h 53m | via I 675

Main Roads

Road	Distance	Duration
Jim Gillis Historic Savannah Parkway	155.9 mi	2h 47m
I 95	94.9 mi	1h 42m
I 75	62.1 mi	1h 7m
Atlanta Bypass / The Perimeter	20.2 mi	23m
Terrell Starr Parkway	10.1 mi	11m
GA 141	6.2 mi	10m
Peachtree Industrial Boulevard	3.6 mi	4m
Osborne Street	3 mi	4m

Longest stretch: Jim Gillis Historic Savannah Parkway — 155.9 mi, about 2h 47m

Turn-by-Turn Driving Directions

Step-by-step road directions between St. Marys, GA and Johns Creek, GA.

Start on 41703

77 ft · 8 sec · West Hall Street

Turn left onto GA 40

3.0 mi · 4 min · Osborne Street

Continue on GA 40

3.0 mi · 4 min · Kingsland Saint Marys Road

Continue on GA 40

2.2 mi · 3 min · East King Avenue

Take the ramp

0.5 mi · 1 min

Toward I 95 North: I 95 North

Merge onto I 95

94 mi · 1 hr 42 min · I 95

Keep slight right at fork onto I 95

0.6 mi · 47 sec · I 95

Take the exit

0.2 mi · 50 sec

Exit 99B Toward I 16 West: Macon Use the slight right lane.

Merge onto I 16

156 mi · 2 hr 47 min · Jim Gillis Historic Savannah Parkway

Toward Savannah Use the slight right lane.

Continue on I 16; GA 540

0.5 mi · 39 sec · Fall Line Freeway

Keep slight right at fork

0.5 mi · 42 sec

Toward I 75 North: Atlanta Use the straight / left lanes.

Merge onto I 75

62 mi · 1 hr 7 min · I 75

Use the straight / slight right lanes.

Keep slight right at fork onto I 675

10 mi · 11 min · Terrell Starr Parkway

Exit 227 Toward I 675 North: Augusta, Greenville Use the straight / slight right lanes.

Keep slight right at fork

0.6 mi · 1 min

Toward I 285 East: Augusta, Greenville Use the slight left / slight right lanes.

Merge onto I 285

20 mi · 23 min · Atlanta Bypass / The Perimeter

Use the straight / slight right lanes.

Take the exit

0.2 mi · 33 sec

Exit 31 Toward GA 141: Peachtree Boulevard Use the straight / slight right lanes.

Keep slight right at fork

0.3 mi · 36 sec

Toward GA 141 North: Peachtree Boulevard Use the slight right lane.

Merge onto GA 141

3.6 mi · 4 min · Peachtree Industrial Boulevard

Use the straight lane.

Keep slight left at fork onto GA 141

6.2 mi · 10 min · GA 141

Toward GA 141 North: Cumming, Dahlonega Use the slight left / straight lanes.

Turn left onto Grove Point Road

0.2 mi · 56 sec · Grove Point Road

Turn left onto Groomsbridge Road

0.5 mi · 2 min · Groomsbridge Road

Turn right onto Morgan Hill Court

270 ft · 11 sec · Morgan Hill Court

Arrive at destination

Morgan Hill Court

Trip Plan

For this 6-hour and 49-minute journey, starting early is key to maximizing your daylight and arriving at your destination comfortably. With only one recommended stop, you have flexibility in pacing yourself, but consider a break around the halfway point or after the 155.9-mile stretch on Jim Gillis Historic Savannah Parkway. Keep an eye on your fuel levels, especially as you transition between major highways; ensure you're topped up before embarking on longer segments. The $57 fuel cost is a good estimate, but always factor in a little extra for unexpected needs. This route is designed for a single day, so focus on a smooth, efficient drive rather than extensive sightseeing.

Morning Departure

Start early — leave by 6-7 AM to arrive at a reasonable hour.

Evening Departure

This is a long drive — plan for a morning departure or consider splitting it into two days.

You can normally do this drive in one day.

Plan roughly 1 meaningful break for fuel, food, and rest.

The halfway point lands around 182.4 miles from St. Marys, GA, or about 3h 21m into the drive.

The longest continuous stretch on this route runs about 155.9 miles.

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 31m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 182.4 miles or 3h 21m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Final hour starts around 5h 34m

Traffic, exits, and arrival timing usually matter more near Johns Creek, GA than in the middle of the route.

Before You Leave

Open the route before leaving St. Marys, GA 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 St. Marys, GA

This is one driving day of about 364.8 miles and 6h 49m.

Your first comfortable stop window is around 80 miles from St. Marys, GA.

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.

The longest stretch is on Jim Gillis Historic Savannah Parkway for about 155.9 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 182.4 mi from St. Marys, GA · 3h 21m into the drive

Mid-route town

Meal stop

Dadeville, AL

182 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

Savannah, GA

Fuel and coffee

A short stop after about 80 miles helps settle the day before fatigue starts building.

West Columbia, SC

Meal break

The midpoint is around 182.4 miles from St. Marys, GA, which is a good place for a longer meal and fuel stop.

Before the longest stretch

Fuel check

Top up before Jim Gillis Historic Savannah Parkway if your tank is already low. That segment runs about 155.9 miles.

Arriving in Johns Creek, GA

The final approach into Johns Creek, GA 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 Johns Creek, GA.

After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

Fuel & Cost

Regular Gas

$57.05 one way

$114.09 round trip

$3.97/gal 25.4 MPG avg 128 kg CO₂

Fuel Type	$/gal	One Way	Round Trip
midgrade	$4.34	$62.38	$124.75
premium	$4.70	$67.52	$135.03
diesel	$5.61	$80.54	$161.09

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$57

Meals

$25–$50

Total

$82–$107

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 127.6 kg one way. Prices: EIA weekly data, 2026-04-13.

Driving Electric?

About $38 in charging · 1 stop · 66% less CO₂

Vehicle Type	kWh	Stops	DC Fast	Home Charge
Average EV	109.4	1	$38.30	$17.51
Efficient EV	91.2	1	$31.92	$14.59
EV Truck/SUV	145.9	1	$51.07	$23.35

Gas CO2

128 kg

EV CO2

43 kg (66% less)

Plan for 1 charging stop. A 30-minute DC fast charge mid-route should be enough to complete the trip comfortably.

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 data refreshed 5 days ago

Origin

St. Marys, GA

Morning in St. Marys on Wednesday

Local time

6:24 AM

EDT

Current temp

86°F

Unavailable

Live forecast

Destination

Johns Creek, GA

Morning in Johns Creek on Wednesday

Local time

6:24 AM

EDT

Current temp

64°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

22 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

6h 49m on the road

Start early — leave by 6-7 AM to arrive at a reasonable hour.

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

Frequently Asked Questions

The drive from St. Marys, GA to Johns Creek, GA covers 364.8 miles and takes about 6h 49m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.

The main roads are Jim Gillis Historic Savannah Parkway, I 95, I 75. Most of the drive stays on highways, so watch for ramps and exits.

This is a comfortable same-day trip.

The midpoint is about 182.4 miles from St. Marys, GA. Look for rest areas, gas stations, or food options near the halfway mark.

At current regular gas prices, expect to spend about $57.05 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.

Start early — leave by 6-7 AM to arrive at a reasonable hour. This is a long drive — plan for a morning departure or consider splitting it into two days.

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.

Between St. Marys, GA and Johns Creek, GA, road signs point toward Savannah and Greenville.

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Trip from St. Marys, GA to Johns Creek, GA

Best Time to Leave

Trip Overview

Drive Character

How Hard Is This Drive?

Critical Maneuvers

Towns Mentioned on Route Signs

Main Roads

Turn-by-Turn Driving Directions

Trip Plan

Before You Leave

Where to Stop

Pacing Suggestions

Arriving in Johns Creek, GA

Fuel & Cost

Travel Intel

St. Marys, GA

Johns Creek, GA

Same local time

22 degrees cooler at arrival

6h 49m on the road

Frequently Asked Questions

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