In addition to the two Hallingdal FK teams, 61 other teams from 5 different countries played in Boys 18/19 - born 2000 - 11 aside. They were divided into 16 different groups, whereof Hallingdal FK could be found in Group 12 together with Greengen FC, Langevåg IL - Fotball IL and Vardeneset BK.

Hallingdal FK made it to Playoff B after reaching 4:th place in Group 12. Once in the playoff they made it all the way to the Final, but lost it against Drøbak-Frogn IL with 1-2. Thereby Hallingdal FK finished second in B 18/19 Playoff B during Norway Cup 2019.

Hallingdal FK also participated in Boys 18/19 - born 1999 - 11 aside during Norway Cup 2018. They reached the 1/16 Final in B19-11-12 Playoff A, but lost it against Lørenskog with 4-5.