RAMSIG is British Mensa's Rambling And Mountaineering SIG, run by SIG Secretary Stephen Nelson. Members organise a variety of hillwalking events throughout the year, and with Party SIG, RAMSIG is one of British Mensa's active participation SIGs.
- Scottish Winter Weekend - a bunkhouse-based hiking weekend in Tyndrum each February, led by Neil Anstis, a successor to the Winter Wilderness weekend.
- Mensa in Keswick - a B&B-based hiking weekend in the Lake District each June, led by Andy Farrell.
- Coniston - a climbing-cottage-based hiking weekend in the Lake District each August, led by Steve Nelson.
- Yorkshire Dales Bunkbarn Weekend - a bunkbarn-based hiking weekend in the Yorkshire Dales each September, led by Janet and Geoff Kay.
Steve Nelson usually leads an intrepid European trip each year.
In September 2007 Steve is leading a RAMSIG trip to the Isle of Rùm.