Long Side is a Lake District fell of 734 m in Cumberland. It rises only 39 m above its key col, 5.3% of its height.
Its key col leads to Skiddaw, not to its nearest higher summit, Carl Side. It shares its height of 734 m with Craig Cwm Silyn, Rhobell Fawr and Fan Fawr. Ullock Pike stands only 0.5 km to the north-west. Its drop of 39 m makes it a Hewitt but is short of the 150 m a Marilyn needs. The key col is close by, only 0.3 km to the east at 695 m. It falls on two OS 1:50,000 sheets, 89 and 90.