Everyone says 1/8 is what all the big money tracks run but I don't see NHRA or IHRA national events running 1/8 mile ? Ron
All the big $ events are 1/8 mile because that's what the people want. The group who prefers 1/4 is getting smaller by the season. With costs where they are, 1/8 is preferred for equipment life and getting large car counts through 8+ rounders.
National events will likely be the last to concede...but more people big $ bracket race than go class racing.