Pennsylvania produced two convenience-store chains, and Pennsylvanians will fight you over which one is a way of life. Sheetz is Appalachia: made-to-order menus, 24 hours, gas always. Wawa is the coastal plain: hoagies, quiet self-assurance, no gas at the old stores. The rivalry is real enough that it has its own Wikipedia section.
What it never had was a border survey. We ran one.
Out of 641 exits claimed by either empire, barely 3% are shared. This is not a market. This is a partition.
The border runs exactly where the geography says it should: down the eastern edge of the Appalachians. Sheetz owns I-80, I-81, I-99, I-70 west of Frederick, and everything through West Virginia. Wawa owns the Philadelphia and New Jersey coastal plain, the Delmarva approaches, and Florida's I-4 corridor (not shown on the map's crop, but very much part of the empire). In between is a strip of country where a wrong exit puts you in enemy territory.
| Highway | Exit | Where |
|---|---|---|
| I-95, Virginia | 48B, 53, 54 | Petersburg / Colonial Heights |
| I-95, Virginia | 110, 126A, 140 | Ladysmith / Fredericksburg / Stafford |
| I-95, Virginia | 156B-A, 158A | Dale City / Prince William Pkwy |
| I-81 + I-64, Virginia | 222 / 87 | Staunton (contested from two directions) |
| I-95, Maryland | 74 | Joppa |
| I-70 + I-270, Maryland | 54, 29B / 31, 32 | Frederick / Sharpsburg |
| I-76, Pennsylvania | 298 | Morgantown |
| I-78, Pennsylvania | 57, 67 | Lehigh Street / Hellertown |
| I-81, Pennsylvania | 165 | Mountain Top |
| I-99 + I-180, Pennsylvania | 136 / 28 | Altoona / Williamsport |
Eight of the 21 are on I-95 in Virginia. The DMZ's hot zone runs from Petersburg to Dale City — the one corridor where Wawa pushed far enough inland and Sheetz pushed far enough south that they meet at the same ramps. If the cold war ever goes hot, it starts at Exit 126A in Fredericksburg.
Honorable mention to Staunton, Virginia, the only town in America contested on two interstates at once (I-81 Exit 222 and I-64 Exit 87), and to Mountain Top, Pennsylvania, where Wawa planted a flag 100 miles deep inside Sheetz country, presumably just to make a point.
Where both chains operate, the market splits with almost no overlap: 344 exits are Sheetz-only, 255 are Wawa-only, 21 are both. For comparison, McDonald's and Burger King — supposedly the fiercest rivalry in fast food — share hundreds of exits. Sheetz and Wawa have drawn an actual line on the actual map, and with a database of every business at every exit, you can see it from space.