I have honestly never measured mine, but the ODS dinette slide is like any other with about 28" depth. The rear ODS bunk slide is about 24" while the DS bunk slide is deep at 36" inches due to the kitchen. The DS kitchen slide is about 20-24" deep.
Overall they are plenty deep, you will just need to make sure your sites are wide.
2014 375 BHFS Eagle Premier
2014 Ram 3500 Longhorn DRW CC
6.7 CTD, Aisin, 4.10's