Erie to Somerset is 192.1 miles and takes about 3h 33m via Raymond P Shafer Highway and Pennsylvania Turnpike, with a fuel budget near $32 and enough daylight to finish in a day. This trip stays within Pennsylvania, traversing the Northeast region for its entirety. Expect a mixed drive that balances highway speeds with some local road navigation. With a recommended one-day duration, this route is ideal for a straightforward journey between these two points, offering a practical option for getting from A to B without extensive detours.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
96.1 miles from Erie, PA
A natural place for your longest stop of the day
, about 1h 46m into the drive
.
Main Roads
Road
Distance
Duration
Raymond P Shafer Highway
104 mi
1h 51m
Pennsylvania Turnpike
81.9 mi
1h 27m
West 12th Street
2 mi
4m
North Pleasant Avenue
0.6 mi
1m
State Street
0.4 mi
1m
Ramada Road
0.3 mi
<1m
East Main Street
0.2 mi
<1m
West Bayfront Parkway
0.2 mi
<1m
Longest stretch:
Raymond P Shafer Highway
— 104 mi, about 1h 51m
Turn-by-Turn Driving Directions
Step-by-step road directions between Erie, PA and Somerset, 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
104 mi·1 hr 51 min·Raymond P Shafer Highway
Use the straight / right lanes.
6
Take the exit
0.6 mi·1 min
Exit 78-77Toward Cranberry, Pennsylvania TurnpikeUse the slight right lane.
7
Keep slight left at fork
0.8 mi·1 min
Toward Youngstown Ohio, HarrisburgUse the straight / slight right lanes.
8
Keep slight right at fork
0.4 mi·56 sec
Exit 77Toward I 76, PATP: Youngstown Ohio, HarrisburgUse the slight right lane.
9
Keep slight left at fork
0.4 mi·1 min
Toward I 76 East: Harrisburg
10
Merge onto I 76; PATP
82 mi·1 hr 27 min·Pennsylvania Turnpike
11
Take the exit
0.2 mi·32 sec
Toward US 219: Somerset, JohnstownUse the slight right lane.
12
Continue on Ramada Road
0.3 mi·34 sec·Ramada Road
Toward US 219: Somerset, Johnstown
13
Continue on North Pleasant Avenue
0.6 mi·1 min·North Pleasant Avenue
14
Turn right onto PA 31; PA 281
0.2 mi·17 sec·East Main Street
15
Arrive at destination
PA 31; PA 281
Trip Plan
Given the 3h 33m estimated duration, this trip is comfortably a one-day drive. Aim to depart in the morning to maximize daylight and allow for any unforeseen delays. The fuel cost is estimated at $32, so ensure your tank is full before you leave Erie. While there's only one recommended stop, consider breaking up the 104-mile stretch on Raymond P Shafer Highway for a quick break if needed. Keep an eye on your fuel gauge, especially as you transition between the main roads, as services can vary.
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 96.1 miles from Erie, PA, or about 1h 46m into the drive.
The longest continuous stretch on this route runs about 104 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 42 miles or 48m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 96.1 miles or 1h 46m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 55m
Traffic, exits, and arrival timing usually matter more near Somerset, 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 192.1 miles and 3h 33m.
Your first comfortable stop window is around 42 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 Raymond P Shafer Highway for about 104 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 10
5 decision points cluster between mile 0.4 and 190.7 — 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.
8
106.7 mi into trip|~1h 58m in
Take the exit toward Cranberry, Pennsylvania Turnpike
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 78-77
Toward Cranberry, Pennsylvania Turnpike
8
107.3 mi into trip|~1h 59m in
Keep slight left at fork toward Youngstown Ohio, Harrisburg
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Toward Youngstown Ohio, Harrisburg
9
108.1 mi into trip|~2h 1m in
Keep slight right at fork toward I 76, PATP: Youngstown Ohio, Harrisburg
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 77
Toward I 76, PATP: Youngstown Ohio, Harrisburg
7
190.7 mi into trip|~3h 31m in
Take the exit toward US 219: Somerset, Johnstown
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward US 219: Somerset, Johnstown
Fuel & Cost
Regular Gas
$31.85 one way
$63.70 round trip
$4.21/gal25.4 MPG avg67 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.61
$34.88
$69.76
premium
$4.93
$37.26
$74.51
diesel
$5.61
$42.41
$84.83
Estimated Tolls: $10.64
Pennsylvania Turnpike
(81.9 mi)$10.64
Toll estimates based on average 2024-2025 rates. EZ-Pass/SunPass discounts may lower the actual cost.
Estimated Trip Cost (one way, 1 person)
Fuel
$32
Tolls
$11
Meals
$25–$50
Total
$67–$92
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 67.2 kg one way.
Prices: EIA weekly data, 2026-04-13.
Station data from NREL Alternative Fuel Stations database.
Driving Electric?
About $20 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
57.6
0
$20.17
$9.22
Efficient EV
48
0
$16.81
$7.68
EV Truck/SUV
76.8
0
$26.89
$12.29
Gas CO2
67 kg
EV CO2
22 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 19, 2026
Origin
Erie, PA
Morning
in Erie on Sunday
Local time
10:36 AM
EDT
Current temp
42°F
Mostly Sunny then Slight Chance Rain Showers
W 13 to 17 mph16% chanceLive forecast
Freeze Warning
Freeze Warning issued April 19 at 3:52AM EDT until April 20 at 11:00AM EDT by NWS Cleveland OH
Freeze Watch
Freeze Watch issued April 19 at 1:11AM EDT until April 21 at 9:00AM EDT by NWS Mount Holly NJ
Destination
Somerset, PA
Morning
in Somerset on Sunday
Local time
10:36 AM
EDT
Current temp
47°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
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
3h 33m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Flight 93 National Memorial
National Memorial
On Tuesday morning, September 11, 2001, the U.S. came under attack when four commercial airliners were hijacked and used to strike targets on the ground. Nearly 3,000 people tragically lost their live...
10 mi from route
~26 min detour
Free
near mile 192.1
The battle at Fort Necessity in the summer of 1754 was the opening action of the French and Indian War. This war was a clash of British, French and American Indian cultures. It ended with the removal...
24 mi from route
~60 min detour
Free
near mile 172.2
The South Fork Dam failed on Friday, May 31, 1889, and unleashed 20,000,000 tons of water that devastated Johnstown, PA. The flood killed 2,209 people but it brought the nation and the world together...
28 mi from route
~69 min detour
Free
near mile 185.5
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route offers a mixed driving experience, with 43% of it on highways. You'll encounter stretches on Raymond P Shafer Highway, West 12th Street, and the Pennsylvania Turnpike. The longest uninterrupted stretch you'll cover is 104 miles on the Raymond P Shafer Highway, suggesting a significant portion of your drive will be at highway speeds. As you progress, the drive transitions between these major arteries and potentially more local road segments, requiring you to adapt your pace and awareness.
43% highway, the rest on surface roads — varied driving throughout.
15 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 104 mi on Raymond P Shafer Highway.
How Hard Is This Drive?
7/10
This route mixes highway mileage with some local-road sections near the start or finish. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.4 miles in near PA 5; PA 290 / West 12th Street.
Driving Effort7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This is a demanding drive. With 10 significant decision points across 192.1 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 0.4 miles (PA 5; PA 290 / West 12th Street): Lane positioning matters here; at 106.7 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 107.3 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Erie, PA and Somerset, PA, road signs point toward Cranberry, Pennsylvania Turnpike, Youngstown Ohio, Harrisburg and Patp: Youngstown Ohio.
Doable as a same-day drive at 3h 33m. Total distance: 192.1 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
3h 33m drive, comfortable solo distance.
Scenic Drive
Mixed highway & surface route profile with national parks nearby.
Frequently Asked Questions
The longest stretch is about 104 miles on Raymond P Shafer Highway. The full list of main roads is in the Roads section above.
Expect about $10.64 in tolls one way, starting with Pennsylvania Turnpike. Most Northeast and Midwest toll agencies accept E-ZPass; in the West and Texas, transponders like TxTag or FasTrak apply. If you do not have a transponder, cashless tolling plates will mail a bill to the vehicle's registered address — usually with a surcharge, so a rental-car toll pass is often cheaper than paying by mail.
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.
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 Somerset, PA before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
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 106.7 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 107.3 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Yes — Flight 93 National Memorial, Fort Necessity National Battlefield and Johnstown Flood National Memorial. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 3.6 hours each way, an in-and-out day trip would put you behind the wheel for 7.1 hours — manageable with a long break at Somerset, PA, but most travelers stay overnight.
