Career
He currently skates with Alexandra Aldridge. Blackmer began skating at the age of 12, having switched over from hockey. Blackmer is a graduate of Lake Orion High School in Lake Orion, Michigan.
Blackmer started out with Silver Blades, which is a figure skating club in Findlay, Ohio.
Partnership with Simpson
Blackmer teamed up with Simpson in February 2011 after his previous partner, Kaitlin Budd, quit. He moved from Michigan to Colorado Springs to train with Simpson under coach Dalilah Sappenfield.
They competed at the 2012 World Junior Championships and finished 10th. On December 2, 2013, Simpson and Blackmer announced the end of their two-year partnership.
Both expressed an interest to compete with new partners.
Partnership with Aldridge
On July 31, 2015, IceNetwork announced that Blackmer had teamed up with ice dancer Alexandra Aldridge, though they had teamed up two months prior. They began work with coaches Anjelika Krylova, Pasquale Camerlengo, and Natalia Annenko-Deller, him moving to Detroit Skate Club in Bloomfield Hills, Michigan from Broadmoor Skating Club in Colorado. He passed sixteen dance tests in one week in order to compete with her.
Their first competition together was the Lake Placid Ice Dance Championships, where they placed third in the senior category, finishing fourth in the short dance and third in the free.
With Aldridge
With Simpson.