1. Iron Mountain Trail

Situated near Poway, in the north of San Diego County, this boulder-lined trail starts from the ornate wooden gate and features beautiful wildflowers along its way. However, this estimated six-mile loop can get challenging during the summer months due to its lack of shade. To avoid this scorching heat, try to arrive early in the morning or late in the afternoon, but if you plan to visit during the midday heat, don’t forget to carry your sunscreen and enough water.
Overall, the trail is short and not so difficult and is perfect for a quick outdoor workout. As a result, this place gets quite busy during the weekends, and the parking lot gets filled up quickly too. But, as long as you arrive early, you won’t face the crowd. The entire trail is well-maintained and filled with scenic beauty throughout. The end of the hike will take you to the second-highest peak in Poway and shows wonderful panoramic views of its surrounding hills. On a clear day, you can even spot Mt. Woodson and Catalina Island.Difficulty level- Moderate
Time required – 3-4 hours
Distance- 6 miles
2. Stonewall Peak Trail

However, the path is full of switchbacks but will keep you entertained with its characteristic plants and rocky scenery. Sometimes, you might get lost due to its twisted path, so make sure to grab a trail map at the Paso Picacho campgrounds kiosk or the visitor’s center before starting your journey. To reach the summit, you would have to climb the stairs that are well-protected with a metal railing. Once you reach the top, it rewards you with tantalizing views of Lake Cuyamaca and its surroundings. But, note that the summit can get very windy.
Difficulty level – Easy
Time required- 2 hours
Distance- 5 miles
3. Cowles Mountain Trail

The trail is moderate and comes with steep switchbacks offering you a great workout opportunity. And although the summit is crowded, the view from the top will be worth the hike as it gives the best view of San Diego city and beyond. The place is located at the Mission Trails Regional Park.
Difficulty level – Moderate
Time required – 1-2 hours
Distance – 3 miles
4. Three Sisters Falls Trail

You would need your best hiking shoes and experienced skill for this trail as it is quite a challenging hike that involves rock climbing and rock traversing. It is also unlike any other hike as this one begins at a descent for about 2 miles, and the endpoint is three cascading waterfalls. The way down there is not safe for beginners until recently as the hillside was eroded and required ropes for the descent. However, now the Forest Service has carved a new path, but it still requires caution.
These naturally occurring waterfalls will give you the ultimate joy during the summer months by getting drenched to beat the heat. And even though it has steep inclines and rocky road, the end offers you incredible vistas of the waterfall and its surroundings. However, the hike gets more challenging when you make your way back to your car because of the steep slope. This place is situated about 54 miles northeast of San Diego.
Difficulty level – Moderate to difficult
Time required – 3-4 hours
Distance - 5.5 miles
5. El Cajon Mountain Trail

However, one good thing about this place is that the trail is easy to follow; hence there will be fewer chances of you getting lost. Make sure to have enough water and snacks as the trail is about 10 miles, and finding a flat spot will be more challenging than you think. But once you reach the summit, you will realize that all these hardships are worth the serene views the top provides.
Difficulty level – Hard to extreme hardAlthough there are many more options, these are the ones you should visit first. So bring out your favorite boots and pack enough sunscreen and food to start hiking.
Time required – 5 hours
Distance – 10 miles