Bristly Ridge (Welsh: Y Grib Bigog) is a grade 1 scramble in Snowdonia. It is located on the north side of Glyder Fach. Consensus puts the difficulty at Grade 1, but it is at the upper end of the grade and some lines qualify as Grade 2. There are some exposed and steep sections of climbing, particularly the upper pitch of Main Gully (also sometimes known as Dexter Gully) and the direct descent into Great Pinnacle Gap. However these sections may be by-passed in favour of easier lines (e.g., Sinister Gully may be ascended instead of Main Gully; an easier descent into Great Pinnacle Gap can be found on the left (East) side by crossing a sloping slab), reducing the overall difficulty to Grade 1.