SMA PLT INADVERTENTLY PASSED THROUGH A TFR ENRTE ON XCOUNTRY FLT.

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I WAS FLYING ACFT FROM ZZZ TO ZZZ1 ARPT ON A ROUTINE BUSINESS TRIP. JUST OUTSIDE ZZZ2 ARPT; I WITNESSED A C-130 OFF MY LEFT SIDE; AS IF AS THOUGH IT WAS LEAVING ZZZ2 ON A MISSION SOMEWHERE. I WAS OUTSIDE THE DELTA AIRSPACE OF ZZZ2; AND JUST ATTRIBUTED IT UP TO BEING ADJACENT TO CLASS D AIRSPACE AND THOUGHT NOTHING MORE OF THE C-130 BEING WITHIN 1/2 MI. SHORTLY THEREAFTER WHEN I LANDED AT ZZZ1; THE FBO OPERATOR TOLD ME TO CALL THE NUMBERS HE HANDED ME; ONE FOR ZZZ3 TOWER; AND THE OTHER FOR ZZZ4 CTR. I DID SO; AND WE AGREED THAT AN AUTH WOULD CALL BACK AT THE OFFICE 30 MINS LATER. AT THAT TIME; A MAN FROM FAA SECURITY EXPLAINED THAT I PASSED THROUGH A TFR AROUND A POWER PLANT BY ZZZ5 CITY; AND ANOTHER NEAR ZZZ6 CITY; WHERE RESTRS 5000 FT AND BELOW HAD BEEN POSTED. I HAD BEEN FLYING A STRAIGHT GPS COURSE FROM ZZZ TO ZZZ1 AT VARYING ALTS. I HAD BEEN IN REGULAR CONTACT WITH MY AVIATION ASSOCIATION EMAIL BULLETINS; ADVISING ME OF THE TFR'S IN THE E; AND OTHER THAN ENHANCED CLASS B; NEVER THOUGHT IT WOULD BE IN THE MIDWEST. I ALSO READ JUST THAT WEEKEND; THAT THE CLASS B RESTRS WERE LIFTED THE PREVIOUS WEEK; FURTHER ASSURING ME THAT THINGS WERE GETTING BACK TO NORMAL. IF I INDEED CROSSED INTO A TFR ON OCT/MON; IT WAS UNKNOWING; AND UNINTENTIONAL. MY PREVIOUS FLTS HAD CAUSED ME TO LET DOWN MY GUARD TO BE EXTRA CAREFUL TO CHK ON CHANGING AIRSPACE; AS I WAS BELIEVING THAT THINGS WERE GETTING BACK TO NORMAL. I DID CHK WX AND NOTAMS BEFORE MY JOURNEY AT THE ZZZ ARPT TERMINAL. BETTER INFO GATHERING; AND DOUBTING ONE'S 'OLD' INSTINCTS REGARDING AIRSPACE BOUNDARIES AND THE FREEDOMS WE HAVE COME TO TAKE FOR GRANTED IS WHAT I CAN PERSONALLY DO TO AVOID ANY FUTURE INCURSIONS; IF ONE DID TAKE PLACE. COMMUNICATING THIS TO OTHER PLTS WILL ALSO CREATE AWARENESS.