20 yard triple option pitches? I don't think so. Pitches were typically 3 to 6 yards. I think you'd have trouble finding any over 10 yards. Hagan to Pritchard in the Pigskin Classic was one of the most memorable long pitches and that was probably only 8 yards.
Certainly the huge majority of pitches were short. The triple option be it a wishbone, veer, or other variation was designed to attack a defense between the DE/OLBs. Running efficiently the majority of plays went inside the offensive tackles.
The great option QBs though had a certain number of longer pitches which took advantage of the defense pinching inside with the idea of getting a speed back on the outside one on one with a defender.
An excellent explanation of the concepts of the offense can be found here.
The RPO based spread offenses of today use very similar concepts designed to force defenders to respond to plays instantly and make a play one on one. Just like most of the plays in the triple option happened in short spaces most of the plays in the spread happen in short spaces. This is why the inside slot receivers in these offenses tend to accumulate big numbers of catches. Their receptions are the equivalent of the short pitches and extended handoffs of the triple options.
Also similar though is that in the spread option offenses the superior QBs can make a play look like it is going inside then pull it out to make the longer play to the open spaces. That used to be to the wide sidelines, now it is the deep pass.
The don't have to be frequent to be game breakers.