[3] He won the national U19 single and quad scull titles in 2012, while still at school and racing for Radford College,[4] and national U23 titles in all three sculling boat classes at the 2015 Australian Rowing Championships now racing in Australian selection crews in Black Mountain RC colours.

[9] In 2017 Letcher won the Australian quad scull championship rowing in a composite selection crew with Caleb Antill, Hamish Playfair and David Watts.

[11] Letcher made his Australian representative debut in the quad scull at the World Junior Rowing Championships in 2012.

Letcher was selected to race that boat with Cameron Girdlestone, Caleb Antill and Jack Cleary in the other seats.

With Letcher in the stroke seat Australian quad kept their composure and technique and managed a bronze medal finish on the line.