Season 5 (High Sierras) (2006-2007)
Endurance:High Sierras is aired on Discovery Kids as a part of the @DK lineup. The first episode aired October 14, 2006. The filming location for the new season is in northern California in the High Sierra mountains at Shaver Lake. In a new twist to this year's contestant selection, the Discovery Kids website held a casting poll which allowed fans to select two contestants from a group of six kids: Ainelle (Los Angeles, CA), Kayla (Leawood, KS), Kelsey (Rockwall, TX), Jordan (Claremont, CA), Garret (Orlando, FL) and Kem (Philadelphia, PA). Kelsey and Garret won the poll by a narrow margin. There will be an episode sometime during the season named "the best Endurance games ever," as selected by a vote at the Discovery Kids website.
The 20 contestants are: Adrian, Aerial, Alex, Anna, Aric, Cameron, Cealey, Connor, Dakota, Darci, Garret, Isaac, Kelsey, Kristine, Lilly, Martina, Max, Rafael, Stefanie and Taylor. There currently are only five girls who are official Endurance players- they are Lilly, Taylor, Kristine, Cealey, Kelsey, and Darci, leaving Aerial, Martina, Stephanie, and Anna to battle it out for the remaining two places. Kelsey and Darci did not have to compete in the Right to Stay challenge because they were given a free ride. The only boys that are official players that we know of are Aric and Alex, because they also recived a free ride.
I got this info from the Wikipedia entry for the Endurance series.