TOU was my first marathon in 2004 and even though I hit the wall it was a great experience.
- How difficult is the second half of the course?
The second half of the course isn't that much more difficult than any other marathon (except St George) except for the fact that it is very tempting to start out aggressively at TOU because of the gentle downhill during the first half of the course. If you do this, you will pay for it in the end.
- How accurate are the mile markers?
Very accurate as far as I can remember. If you wear a Garmin, you will be off by a little bit because the canyon winds a lot and it is difficult to run the tangents correctly.
- How cold is it at the beginning of the race?
I ran it in 2004 and the start temperature was perfect but it was 80 degrees by the time I finished. When I ran it in 2006 it was 24 degrees at the start. Expect and prepare for anything.
- How organized is the clothes drop-off service?
- How many port-a-potties at each aid station?
I think that there are 2 port-a-potties at each station.
- How organized is the overall race, especially at the finish?
TOU is a very well organized race from start to finish.
- Is there a good size crowd of spectators throughout?
The first 14 miles of the course are closed to traffic so there are very few spectators. Once you hit the small towns, there are a few people out watching but overall there is very little crowd support.