I'm looking for a CMS platform that will allow registered users to create pages and make edits to my pages (much like a Wiki). However, I would like to have some control over the layout of the pages in order to have uniformity across my site. I'm trying to base my site off AllTrails.com, http://alltrails.com/trail/us/iowa/h...ck-nature-area. Although I would like users to be able to create pages (unlike AllTrails), I want them to be only able to edit the fields I allow such as "Trail Length," "Directions," or "Contact Info."

Any suggestions on what type of platform to use for this? Could I control this at all with a Wiki? Any idea what AllTrails is built with? Thanks in advance for the help.

You could use Simple Machines Forum SMF 2 with a custom form mod for posting the threads.

I will have to give a feedback on this matter, I am not sure what ideas do you have in mind to implement it, but I have tried out the Simple Machines Forum SMF2, and it works like a charm for me, I heard of the other too, but my friend, also my web advisor and partner, says that this would be better compared to the latter one. Since I haven’t tried both, I got nothing to compare with but I am satisfied with what I am using now.

You can use wordpress or joomla too

With WordPress' custom page feature, you can create specific pages with the needed meta values (trail length, distance, etc.). You would also create a new user type (say "trail editor") and restrict them to only editing the custom trail pages. The coding for this is pretty darn simple, btw, and easy to achieve.