While Laguna Beach is definitely a "beach" town, its geography also offers rolling hills and vertical climbs for hiking at all levels. (What's more, the views at the top are spectacular!)
There are a number of organizations here that offer guided hiking tours (even for large corporate training events), but you're welcome to grab a hiking map from the Official Visitors Center and make your way to the various trails that wend and wind their way through and above Laguna Beach.
In many cases, you will be hiking well-groomed fire trails where you will meet other hikers and bikers. One of the most spectacular hikes begins at (literally) "Top of the World" where Alta Laguna Park is situated. Simply park at Alta Laguna or on the street in this north side Laguna neighborhood, and discover numerous trails that take you down into Laguna Beach, and even travel miles to neighboring towns.
In Laguna Beach, you will also come across treasure trove finds - paths and narrower trails that are clearly delineated as hiking trails but steeper in nature. Drive up Bluebird Canyon for hiking trail spurs, or seek out popular trails such as the Valido Trail in South Laguna Beach that presents steep climbing with a gift at the end - panoramic ocean views.
As with all hiking endeavors, bring a hiking buddy with you, stay hydrated, and check for dog (on leash) allowances before you begin.