Most people would agree that San Diego County has one of the most spectacular coastlines in all of California.

But as you move inland, away from the sea, the terrain becomes quite rugged. Rocky peaks covered with chaparral overlooking broad valleys and canyons dominate the inland region between Interstate 15 and the Peninsular Ranges. For hikers, this is Eden, a vast area that has much to be discovered but requires effort to penetrate into the beautiful but harsh landscape. Here are just a few of the great trails for hiking along the inland corridor.

Cowles Mountain

This is a three-mile, moderately strenuous hike to the top of the highest peak within the San Diego city limits. The summit yields great views in every direction, including a terrific look at San Diego itself. An early morning or evening hike is rewarded by a sunrise or sunset that you won’t soon forget. The trail is steep at times and can be crowded, but don’t let that deter you. Cowles Mountain is a top hike in the San Diego area.

Iron Mountain

Another popular hike – with only slightly less traffic than Cowles Mountain – is the five-mile out-and-back trek to the top of Iron Mountain. You’ll get an amazing, panoramic view at the top, stretching from the coast all the way to the Cuyamaca Mountains. On clear days, you can even see as far as the Catalina Islands. With an elevation gain of over 1,100 feet, this is a moderate hike with no shade, so bring plenty of water and wear sunscreen. Dogs are welcome on a leash.

Lake Hodges

The county’s Coast-to-Crest Trail will eventually stretch 70 miles from the beaches of Del Mar to the crest of Volcan Mountain. It’s about 70 percent complete, but among the most popular of the finished sections is the portion that runs along beautiful Lake Hodges. Hike between three to seven miles along this picturesque trail for lovely views of the reservoir nestled in the scenic Del Dios Gorge.

El Cajon Mountain

If you’re up for a challenge, this trail is rated among the most difficult west of the mountains. “El Cap” is an 11-mile slog that goes up, down, up, down, up…you get the picture. You’ll follow the rugged granite ridges all the way to top for an awesome view down into the San Diego River Gorge. Do this trail only if you’re in good shape and an experienced hiker. Bring enough food and water, and wear good, sturdy footwear. Plan a full day for El Cajon.

To be sure, there are many more great hiking trails along the inland corridor. Countless mountains, canyons and valleys are part of this vast wilderness. Lace up your boots, put on a camelback and strike out into this robust and extraordinary landscape. You’ll be very glad you did.