Hiking in Fresno is an amazing and budget way to get exercise. An advantage of hiking as opposed to going to a gym is less cost since there is no membership fee to hike. You also may find that you save money on vitamins since you get natural vitamins from the sun. Although some of this savings on vitamins may be offset by cost for sun screen.
A great Fresno area hiking option is the Pa'san Ridge Trail. This amazing hiking trail is located in Auberry just outside of Fresno. The hiking trail is a 7.8 mile trail that is located inside the San Joaquin River Gorge Management Area. The Auberry hiking trail is a moderate trail with options of hiking, running, and mountain biking in addition to horse riding. Driving from Fresno through Auberry and into the parking area for the trail is very feasible for a car pulling a horse trail. The roads are well maintained. The hiking trail is also quite wide to accommodate two horses passing each other. Fresno residents can reach this area with just a short drive from downtown Fresno. As an added benefit this Auberry area trail is relatively well used so you don't feel like you are alone here. Also there are some major stores in Auberry if you want to grab a drink or meal on the way to or from the hike.