Narrative:

I was taxiing for departure at quincy, il, following a quick turn for fuel. Being a little unfamiliar with the airport, I taxied the wrong way for departure. I ended up taxiing onto the runway that another aircraft was departing on. The departure end was on the other side of a hill. The departing aircraft was not visible until it was airborne. It took off at least 2000 ft before my position as I crossed on a taxiway. It was well above me as it passed overhead while I turned around to exit the runway. The other aircraft probably never saw me.

Google
 

Original NASA ASRS Text

Title: AT UIN, AN UNCTLED ARPT, A GA PLT TAXIED ONTO THE WRONG END OF THE RWY FOR TKOF WHILE TFC WAS DEPARTING ON THE OPPOSITE END.

Narrative: I WAS TAXIING FOR DEP AT QUINCY, IL, FOLLOWING A QUICK TURN FOR FUEL. BEING A LITTLE UNFAMILIAR WITH THE ARPT, I TAXIED THE WRONG WAY FOR DEP. I ENDED UP TAXIING ONTO THE RWY THAT ANOTHER ACFT WAS DEPARTING ON. THE DEP END WAS ON THE OTHER SIDE OF A HILL. THE DEPARTING ACFT WAS NOT VISIBLE UNTIL IT WAS AIRBORNE. IT TOOK OFF AT LEAST 2000 FT BEFORE MY POS AS I CROSSED ON A TXWY. IT WAS WELL ABOVE ME AS IT PASSED OVERHEAD WHILE I TURNED AROUND TO EXIT THE RWY. THE OTHER ACFT PROBABLY NEVER SAW ME.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.