Last month, Bose won the under-20 race at the NIMRA Juniors British and Irish Mountain Running Trials.
Bose was one of five Finn Valley AC representatives in action in Down.
The Glenswilly woman was backed up by the eighth-placed Sarah Bradley for a team silver in the under-20 event.
In the under-20 race, Finn Valley AC duo Oisin Toye (9th) and Diarmait Keogh (14th) were team bronze medalists.
In the under-17 event, Eimear McCarroll was eighth overall.
In America, Finn Valley AC’s Cassie Lagan helped Augusta University to a team bronze at the Eye Opener Invitational. Lagan was 22nd overall in the race held in Spartanburg.