I'm interested in adding some outdoor activities like hiking or mountain biking to my exercise regiment.

I work out at the gym several times a week doing cardio and weight lifting, but find myself lethargic and lazy otherwise.

What are some good outdoor activities I can add to evenings after work or on Saturday and Sundays?

FYI, I'm hesitant to jump fully into something that requires purchasing expensive gear off the bat. I can afford it but don't want to do so before deciding a new activity is something I actually enjoy.

I welcome any advice, personal stories, and/or recommendations on how to get started in taking on a new outdoor activity.