Workout/Hiking Partner?

None of my friends are really all that into hiking or working out, or the few that are have completely different schedules than I do. How do you go about finding someone to workout with or go hiking with? I love to hike, but my husband doesn't want me going out alone and he works a lot and usually doesn't have time to go with me.

On that note if anyone in Oceanside CA is looking for a workout buddy let me know!