Most new courses are being developed with multiple sets of tees to better serve the different skill levels of players in the community, even if the sets are not all installed right away, due to budget constraints.  Four levels of player skills (Gold, Blue, White and Red) have been defined with design guidelines for each level (see Course Design Guidelines for PDGA Skill Levels & Divisions).  Public courses are usually designed with a combination of Blue & Red or White & Red tees to meet the needs of most players.  Well developed disc golf markets and private facilities can sometimes justify installing a few of the longest, most challenging courses that include Gold tees for the highest level of players, although it still makes sense to install a set of shorter tees for White or Red level players.
Soon we will add a detailed map of the Reds with distance and at what par they are being played.