Sanitas is a popular mountain. It might be Boulder's most beloved. Just go into any building in Boulder that has named conference rooms - I would bet money that there is a "Sanitas Room". There is a brewery named after it. Can't say that about Green Mountain or Bear Peak! Because of its proximity to town, low (relative) difficulty, and short round-trip distance, Sanitas can get slammed at times. If you visit it on a nice weekend day, just approach the whole experience like it is a party. This hike does not typically deliver solitude, even outside of peak season.