One the year's highlights of Sierra Club's Hundred Peaks Section's (HPS) is the annual Waterman Rendezvous.
Outings start from various trailheads and approach Waterman's summit from different directions. Hikes range in length, elevation gain and are geared for people with a range of conditioning levels.
The great time continues on the peak with a big potluck lunch. This is a perfect opportunity to meet HPS folks and to learn about the Section. It is also a very fun day with great hikes.
Here is the link to the Hundred Peaks Section list of outings.
When you go to this site, click on any of the outings on July 27th and you will get contact information for the leaders. They will email you details of their hike.