Phalanx Mountain is a 2,441-metre (8,009-foot) summit located in Garibaldi Provincial Park of southwest British Columbia, Canada.

[4] The mountain's toponym was officially adopted August 27, 1965, by the Geographical Names Board of Canada.

[5] Most weather fronts originate in the Pacific Ocean, and travel east toward the Coast Mountains where they are forced upward by the range (Orographic lift), causing them to drop their moisture in the form of rain or snowfall.

As a result, the Coast Mountains experience high precipitation, especially during the winter months in the form of snowfall.

The months July through September offer the most favorable weather for climbing Phalanx Mountain.