Heroes
-Kevin & Drew (Season 1, All Stars)
-Rob & Brennan (Season 1)
-Peggy & Claire (Season 2)
-Oswald & Danny (Season 2, All Stars)
-Ken & Gerard (Season 3)
-Teri & Ian (Season 3, All Stars)
-Jon & Al (Season 4)
-Charla & Mirna (Season 5, All Stars)
-Lynn & Alex (Season 7)
-Meredith & Gretchen (Season 7)
-Uchenna & Joyce (Season 7, All Stars)
-Fran & Barry (Season 9)
-BJ & Tyler (Season 9)
-David & Mary (Season 10, All Stars)
-Ronald & Christina (Season 12)
-Toni & Dallas (Season 13)
-Nick & Starr (Season 13)
Villains
-Joe & Bill (Season 1, All Stars)
-Paul & Amie (Season 1)
-Tara & Alex (Season 2 team)
-Steve & Dave (Season 4)
-Kelly & Jon (Season 4)
-Chip & Kim (Season 5)
-Jonathan & Colin (Season 5/6 team)
-DJ Paolo & Brock Rogers (Season 8 team)
-Lake & Michelle (Season 9)
-Dustin & Kandice (Season 10, All Stars)
-Lyn & Karlyn (Season 10)
-Kynt & Vyxsin (Season 12)
-Ken & Tina (Season 13)
-Margie & Luke (Season 14)
-Megan & Cheyne (Season 15)
-Louie & Michael (Season 16)
-Jet & Cord (Season 16)
There ARE a lot of teams, but maybe they could HAVE all these teams at the starting line and then there could be a starting line challenge that grants access to the rest of the Race to the first 13-15 teams to finish the task.