Madison was a semi-finalist in 2015, 2016 and 2017 and has made an amazing transformation year on year - I have competition photos of her from each year on her titleholder page. I love that contestants who have competed with her previously are in love with her and thrilled for her win! She is from Lamar, Colorado and is the first titleholder from the southeast part of her state in decades.
Sydney was competing at Miss CO Teen USA for the first time. She is the first titleholder from Fort Collins since Danielle Scimeca in 2008.
Among the top 15 were 2018 fourth runner-up Alyssa Magalong; past Teen USA runners-up Bre L'Estrange (in Colorado), Noelle Woods (in Colorado), Holly Harrington (in Colorado & Wyoming) and Brittany Georgia (in Wisconsin); three-time Miss Oregon USA runner-up Kayla Knock (who has also competed in CO Teen USA); Miss Colorado's Outstanding Teen 2013 Caitlin Quisenberry (Miss Photogenic); 2018 semi-finalist Erin Roney; and newcomers Nishann Miller (Miss Congeniality) and Savannah Cavanaugh.
In the Teen pageant Mercy Lee placed first runner-up for the second year in a row. Second and third runner-up spots went to first-time contestants Lucia T. and Jayme Walker, and fourth runner-up was Emily Bernstein who was a non-finalist in 2017 and a semi-finalist in 2016.
2018 semi-finalists Patricia Chen and Alexia Martinez made the top 15 again this year, the other semi-finalists were all competing for the first time: Mattison Brumagim, Joislyn Garcia Jurado, Hannah L., Amaya McGough, Genavieve Pelton, Stella Penfold, Searra Sexton and Harper Wharton (Miss Photogenic).
Non-finalist Thea K won Miss Congeniality.
See also: Miss Colorado USA & Teen USA state pageant results | Miss Colorado USA & Teen USA titleholder history
1RU: Krystal Harrelson (SF 18, 3RU 16)
2RU: Nirvana P.
3RU: Jacqueline Zuccherino (CO TUSA 12)
4RU: Taylor Fogg (SF 18)
Brittany Georgia (SF IA TUSA 18, 1RU WI TUSA 17, 4RU 16, 2RU 15)
Ashleigh Gutierrez (NF 17, NF CO TUSA 15)
Holly Harrington (3RU CO TUSA 17, 3RU WY TUSA 16, 1RU WY TUSA 15)
Kayla Knock (3RU 17, 4RU 16, 4RU 15, SF CO TUSA 14, SF 13)
Bre L'Estrange (SF 18, NF 17, 2RU CO TUSA 16, SF 15)
Alyssa Magalong (4RU 18, SF 17)
Caitlin Quisenberry (CO's OT 13)
Erin Roney (SF 18, SF 17, NF CO TUSA 15, NF 14, SF 13)
Noelle Woods (4RU CO TUSA 13)
Congeniality: Nishann Miller
Photogenic: Caitlin Quisenberry
1RU: Mercy Lee (1RU 18)
2RU: Lucia T.
3RU: Jayme Walker
4RU: Emily Bernstein (NF 17, SF 16)
Patricia Chen (SF 18)
Joislyn Garcia Jurado
Alexia Martinez (SF 18)
Congeniality: Thea K.
Photogenic: Harper Wharton