A PA46 PLT LANDED ON A TXWY PARALLEL TO OWD RWY 17. CONTRIBUTING FACTORS WERE HUNGER; FATIGUE; AND A VASI ON RWY'S R SIDE BUT TXWY'S L SIDE.

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I LANDED ON A TXWY PARALLEL TO THE ACTIVE RWY 17. IT WAS A BEAUTIFUL END OF DAY AT ABOUT DUSK. I HAD DEPARTED MDW AND HAD DROPPED OFF MY COLLEAGUE AT ACK AND HAD THEN HEADED TO OWD. A MOONEY WAS ON FINAL AS I WAS ON L DOWNWIND SO THE TWR ASKED ME TO EXTEND. I DID SO AND THOUGHT IT WAS A GREAT OPPORTUNITY TO REALLY FOCUS ON A PERFECT LNDG SINCE THE WIND WAS 30 DEGS OFF THE RWY GUSTING TO 18-20 KTS. I STABILIZED PERFECTLY ON THE VASI AND AT PERFECT SPD. AS I WAS ABOUT TO LAND; I REALIZED I WAS NOT LINED UP ON THE RWY BUT ON THE PARALLEL TXWY. THE LNDG WAS PERFECT; BUT ON THE WRONG SURFACE. AS I CONSIDER THE LIKELY CAUSES; I LIST THE FOLLOWING POSSIBLE CONTRIBUTING FACTORS: 1) I WAS A BIT TIRED SINCE I HAD COME FROM 2 MEETINGS IN CHICAGO; BUT I'D BE SURPRISED IF THIS WAS REALLY SEMINAL TO THE MISTAKE. 2) I HAD NOT YET HAD DINNER SO I WAS GETTING A LITTLE HUNGRY. A COMBINATION OF #1 AND #2 MIGHT HAVE BEEN A CONTRIBUTOR. 3) MY FLT DIRECTOR HAD BEHAVED A BIT ODDLY ON MY FLYING TIME; SO I WAS CONSIDERING POSSIBLE SOURCES OF THE POSSIBLE PROB. 4) I WAS VERY FOCUSED ON SPD AND PITCH CTL; TRYING TO REALLY GREASE A PERFECT XWIND LNDG. 5) ALTHOUGH THIS IS MY HOME ARPT; WE RARELY LAND ON RWY 17 AND THE VASI IS ON THE R SIDE OF THE RWY; NOT THE MORE USUAL L. I THINK I SLIPPED INTO THE COMFORT OF HAVING THE VASI ON THE L SIDE OF THE LNDG SURFACE WHILE FOCUSING INTENTLY AND THIS SET ME UP TO LAND ON THE TXWY PARALLEL TO RWY 17; ON ITS RIGHT. MAKING THIS MISTAKE SEEMS INCREDIBLE TO ME AND YET IT OCCURRED. I MUST REINCORPORATE A MORE STRINGENT VISUAL IDENT OF THE CORRECT LNDG SURFACE IN MY FINAL 'BEFORE LNDG' CHKLIST.