Erie to Saint Clair is 314.7 miles and takes about 5h 52m via the Keystone Shortway, with a fuel budget near $53 and enough daylight to finish in a day. This trip stays within Pennsylvania, traversing the Northeast region from start to finish. You'll spend most of your time on surface roads, so expect a more relaxed pace than a pure interstate trip. Given it's a single-day drive, it's a good option if you want to get from point A to point B without a major time commitment.
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
157.3 miles from Erie, PA
A natural place for your longest stop of the day
, about 2h 53m into the drive
.
Main Roads
Road
Distance
Duration
Keystone Shortway
204.4 mi
3h 39m
Raymond P Shafer Highway
66.8 mi
1h 11m
State Route 54
13.3 mi
16m
Elysburg Road
9.7 mi
11m
Skyline Drive
4.2 mi
4m
Fountain Street
4.2 mi
6m
Continental Boulevard
2.9 mi
3m
West 12th Street
2 mi
4m
Longest stretch:
Keystone Shortway
— 204.4 mi, about 3h 39m
Traffic on I-80
Hour-of-day weekday pattern from 52 FHWA count stations on your route.
Peak
3 PM
~1,044 veh/hr typical
· worst 1,440
Quietest
2 AM
~187 veh/hr
Peak-to-quiet ratio
5.6×
busier at peak than in the quiet hours
12a6anoon6p11p
Averaged across 103 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between Erie, PA and Saint Clair, PA.
1
Start on State Street
0.4 mi·1 min·State Street
2
Turn right onto PA 5; PA 290
2.0 mi·4 min·West 12th Street
Use the straight lane.
3
Turn right onto Greengarden Boulevard
0.1 mi·23 sec·Greengarden Boulevard
Use the straight / right lanes.
4
Turn left onto West Bayfront Parkway
0.2 mi·20 sec·West Bayfront Parkway
5
Continue on I 79
67 mi·1 hr 11 min·Raymond P Shafer Highway
Use the straight / right lanes.
6
Take the exit
0.4 mi·59 sec
Toward I 80 East: Clarion
7
Merge onto I 80
204 mi·3 hr 39 min·Keystone Shortway
8
Take the exit
0.2 mi·26 sec
Toward PA 54: Danville, Washingtonville
9
Turn slight left
79 ft·2 sec
10
Turn right onto PA 54
2.9 mi·3 min·Continental Boulevard
Use the straight / right lanes.
11
Continue on PA 54
0.1 mi·19 sec·Factory Street
12
Continue on PA 54
0.3 mi·49 sec·Danville-Riverside Bridge Road
13
Turn left onto PA 54
9.7 mi·11 min·Elysburg Road
Use the left lane.
14
Continue on PA 54
13 mi·16 min·State Route 54
15
Continue on PA 54
1.4 mi·2 min·Centre Street
16
Turn right onto PA 61
0.6 mi·49 sec·South Hoffman Boulevard
17
Turn slight left onto PA 61
0.9 mi·1 min·Broad Street
18
Turn left onto PA 61
4.2 mi·6 min·Fountain Street
19
Continue on PA 61
1.2 mi·1 min·West Oak Street
20
Turn right onto PA 61
0.5 mi·1 min·South Lehigh Avenue
Use the straight / right lanes.
21
Continue on PA 61
4.2 mi·4 min·Skyline Drive
22
Continue on PA 61
0.5 mi·44 sec·Joseph H. Long Boulevard
23
Turn left onto West Hancock Street
0.1 mi·23 sec·West Hancock Street
24
Turn right onto North 2nd Street
79 ft·1 sec·North 2nd Street
25
Arrive at destination
North 2nd Street
Trip Plan
To make the most of this 5h 52m drive, consider leaving early in the morning to give yourself plenty of daylight. With a fuel cost estimated around $53, it's a budget-friendly trip. The longest stretch without a major road change is over 200 miles on the Keystone Shortway, so plan your stop before you begin this segment if needed. Since it's a single-day drive, you have flexibility; however, be aware that the route is mostly surface roads, which can mean more local traffic and slower speeds, especially as you approach your destination.
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 157.3 miles from Erie, PA, or about 2h 53m into the drive.
The longest continuous stretch on this route runs about 204.4 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 69 miles or 1h 17m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 157.3 miles or 2h 53m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 4h 41m
Traffic, exits, and arrival timing usually matter more near Saint Clair, PA than in the middle of the route.
Before You Leave
+
Open the route before leaving Erie, PA 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 Erie, PA
This is one driving day of about 314.7 miles and 5h 52m.
Your first comfortable stop window is around 69 miles from Erie, PA.
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 Keystone Shortway for about 204.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 13
5 decision points cluster between mile 0.4 and 274.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0.4 mi into trip|~1m in|PA 5; PA 290 / West 12th Street
Turn right onto PA 5; PA 290 / West 12th Street
Lane positioning matters here
Use the straight lane.
6
2.4 mi into trip|~5m in|Greengarden Boulevard
Turn right onto Greengarden Boulevard
Lane positioning matters here
Use the straight / right lanes.
5
2.6 mi into trip|~6m in|West Bayfront Parkway
Turn left onto West Bayfront Parkway
Navigation decision point
5
274.4 mi into trip|~4h 58m in
Take the exit toward PA 54: Danville, Washingtonville
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward PA 54: Danville, Washingtonville
5
274.6 mi into trip|~4h 59m in|PA 54 / Continental Boulevard
Turn right onto PA 54 / Continental Boulevard
Lane positioning matters here
Use the straight / right lanes.
Fuel & Cost
Regular Gas
$54.96 one way
$109.92 round trip
$4.44/gal25.4 MPG avg110 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.86
$60.18
$120.35
premium
$5.20
$64.38
$128.75
diesel
$6.28
$77.76
$155.52
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$55
Meals
$25–$50
Total
$80–$105
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 110.1 kg one way.
Prices: EIA weekly data, 2026-10-19.
Driving Electric?
About $33 in charging
· 1 stop
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
94.4
1
$33.04
$15.11
Efficient EV
78.7
0
$27.54
$12.59
EV Truck/SUV
125.9
1
$44.06
$20.14
Gas CO2
110 kg
EV CO2
37 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 as of Oct 19, 2026
Origin
Erie, PA
Night
in Erie on Friday
Local time
11:02 PM
EDT
Current temp
62°F
Sunny
SW 7 mph0% chanceLive forecast
Freeze Warning
Freeze Warning issued October 18 at 10:42PM EDT until October 19 at 9:00AM EDT by NWS State College PA
Destination
Saint Clair, PA
Night
in Saint Clair on Friday
Local time
11:02 PM
EDT
Current temp
67°F
Widespread Frost then Sunny
N 3 mph0% chanceLive forecast
Freeze Warning
Freeze Warning issued October 18 at 10:42PM EDT until October 19 at 9:00AM EDT by NWS State College PA
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
5 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
5h 52m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
National Parks Near This Route
Worth a detour if your schedule allows.
Appalachian National Scenic Trail
National Scenic Trail
The Appalachian Trail is a 2,190+ mile long public footpath that traverses the scenic, wooded, pastoral, wild, and culturally resonant lands of the Appalachian Mountains. Conceived in 1921, built by p...
25 mi from route
~62 min detour
Free
near mile 314.7
Park Closure: List of trail closures post-Hurricane Helene
Caution: Black Bears Frequenting the McAfee Knob Area in Virginia
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route features a highway share of 4, meaning you'll be on surface roads for the majority of the 314.7 miles. The Keystone Shortway, your primary highway, accounts for the longest stretch at 204.4 miles. After that, you'll transition to Raymond P Shafer Highway and State Route 54, which are predominantly surface roads. Expect the feel of the drive to shift from highway cruising to more local road driving as you progress.
Only 4% highway — the rest is turn-by-turn surface driving.
25 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 204.4 mi on Keystone Shortway.
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 around 0.4 miles in near PA 5; PA 290 / West 12th Street.
Driving Effort4/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 5h 52m drive. You will face about 13 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.4 miles (PA 5; PA 290 / West 12th Street): Lane positioning matters here; at 2.4 miles (Greengarden Boulevard): Lane positioning matters here; at 2.6 miles (West Bayfront Parkway): Navigation decision point.
Elevation Profile
Gently rolling terrain
1,750 ft593 ft
Total Climb
2,874 ft
Total Descent
2,789 ft
Highest Point
1,750 ft
~157.3 mi in
Elevation Range
1,157 ft
Notable High Points
1,515 ft at ~292.2 miles+777 ft prominence
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from Erie, PA to Saint Clair, PA, road signs begin pointing toward Washingtonville along the way.
Mostly surface roads route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 204.4 miles on Keystone Shortway. The full list of main roads is in the Roads section above.
We did not find dedicated rest areas on this route. For a drive this long, plan bathroom and stretch breaks around gas stations, fast-food stops, or small-town downtowns — check the Nearby Places section for options.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Plan at least 1 meaningful breaks. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 0.4 miles (PA 5; PA 290 / West 12th Street): Lane positioning matters here; at 2.4 miles (Greengarden Boulevard): Lane positioning matters here; at 2.6 miles (West Bayfront Parkway): Navigation decision point.
Yes — Appalachian National Scenic Trail. See the National Parks section for detour distances and tips on detours.
Not recommended in a single day. At 5.9 hours each way, a round trip means 11.8 hours of driving — that is an unsafe level of fatigue for most drivers. Plan at least one night at Saint Clair, PA before the return drive.
