Start of The Ridge 2 Ridge 10.5 and 21 mile trail race at the Redbud Pavilion near the BMX track at Oak Mtn State Park. You will need to enter the park at the South Entrance. The north entrance does not open until 7:00 AM and if you go to it, you may miss the start. Here is a map link to the Redbud Pavilion from the south (southwest) entrance from I-65 near I-459. ?