It would be very, very hard to beat this barring some extremely radical changes to the game. 20 triples in a season is very hard to do now, though it does occur every now and again. You'd have to do that for about 16 seasons. The parks aren't as cavernous as many of them were in Crawford's day.
Crawford was a terrific dead ball era player for Cincinatti and ( mostly) Detroit- solid in every aspect, who was somewhat overshadowed by his teammate Ty Cobb, and stars of the time like Lajoie, Speaker, Wagner, and Eddie Collins but a worthy Hall of Famer