I remember it when it was 1/4 mile. That was TOO LONG with the shut down curve! I ran it more when it was 1/8,,much better. In fact, a friend of mine rolled a M/P Chev on the shut down turn years ago. It may have been 1000' foot sometime, but I can't say for sure. Not sure just when it closed. I ran there last probably '92 or so.