Something I have noticed in Indiana is a trend to surround greens with deep native grasses and environmental areas. What often happens is that the player that is walking cannot cut through these areas to get to the next tee and often has to take a cart path that many times has a much longer route than if they walked in a straight line. Bear Slide in Cicero is a prime example of this. One of the things that another course in the area, Purgatory, did was just have an area cut low so that a walker can make a straight line from the green to the next tee box and they do the same from the tee boxes to the fairway in every case possible. That probably cuts about 1000 yards off of the walk over the entire course.
I know this isn't always possible because of ponds and housing development courses, but if architects designed this into the plan it would be a great benefit for the walker and help speed up the transitions from hole to hole.
But the best thing that can help speed up pace of play is the age old practice of playing ready golf. It really is that simple. You can see this every day on any golf course you go to. You would be amazed at how many people will get out of a cart, stand over their ball for about thirty seconds, talk to their buddy then search for a marker for yardage if they don't have GPS in the cart, then go back and think about what club to get out of the bag. Then they go through the whole pre-shot routine, hit, watch the ball, discuss the shot then clean the club before putting it back in the bag, proceed to their buddy's ball and do the same thing. Rinse and repeat this on every hole during the round and it is painfully obvious why golf takes too long. That whole process takes about a minute a player. Figure in 18 tee shots and at least 14 approaches then you 32 to 36 shots at one minute per player. For a foursome that totals two hours and leads to the five hour round. Take those two hours away and you have three hour rounds.
Clyde,
I like your comments about trying to spread the players out by the placement of holes, but isn't that still subject to how closely together the course puts the tee times?