We live about ten mintues from 25 up by the Pueblo West Campground. It takes about 35-40 min to get to gate 20. They have opened gate 19 now and that cuts off a few minutes of our drive time. It's open Mon-Fri.
I live off of Purcell Blvd on the North side of Pueblo West. We're 3 miles from Hwy 25. It takes us 25 minutes to get to gate 20. Depending where you're going on base you have to add 5-10 more minutes to your drive.
From McCulloch Boulevard (not McCullick ) you should count on 45 minutes or more depending on traffic. I think Matt is trying to tell you to take N. Purcell not Platteville. (Platteville is a simi-circle that connects to N. Purcell.) Watch the speed limit on Purcell, the sheriff deputies like to lay wait for impatient drivers.