The SoCal Six Pack of Peaks is the best structured hiking challenge in Southern California, and it is the gateway from weekend day-hiking into real mountain objectives. Six peaks from 5,710 feet to 11,503 feet, ranging from a moderate 14-mile day at Mount Wilson to a genuinely tough 19-to-22-mile San Gorgonio push. Completing all six in a single hiking season requires real preparation. This is the 12-week training plan we recommend before your first peak: weekly mileage progression, elevation gain targets, the gear that matters, and the realistic timeline for going from “I hike sometimes” to “I just finished San Gorgonio.”

What is the SoCal Six Pack of Peaks and why it matters

The SoCal Six Pack of Peaks is a structured hiking challenge covering six prominent Southern California summits, originally organized by the Six-Pack of Peaks Challenge community and now one of the most popular regional peak-bagging series in the United States. The peaks span the San Gabriel, San Bernardino, and San Jacinto ranges, with elevations from 5,710 feet up to 11,503 feet. Each peak is non-technical (no climbing, no exposure, no ropes), but the combination of distance, elevation gain, and altitude makes the harder peaks a real fitness test. The full challenge framework, peak-by-peak route details, and difficulty progression sit in our complete Six Pack of Peaks guide.

The six peaks in the original SoCal series, easiest to hardest:

1. Mount Wilson (5,710 ft) — 14 miles round trip, ~4,500 ft gain via Sturtevant trail. The introduction peak.
2. Cucamonga Peak (8,859 ft) — 12 miles, ~4,300 ft gain. Wilderness permit required.
3. Mount San Antonio / Mount Baldy (10,064 ft) — 11 miles, ~3,900 ft gain via Ski Hut trail. First 10,000-footer.
4. San Bernardino Peak (10,649 ft) — 16 miles, ~4,700 ft gain from Angelus Oaks.
5. San Jacinto Peak (10,834 ft) — 11 miles, ~2,400 ft gain from the tramway (or 21 miles, ~10,000 ft from Idyllwild for the full effort).
6. San Gorgonio Mountain (11,503 ft) — 19-22 miles, ~5,500 ft gain. The crown jewel and the real test.

The reason this challenge works as a training progression is that each peak is meaningfully harder than the one before it. Mount Wilson is the warm-up, Baldy is your first real altitude exposure, San Gorgonio is the peak you remember for the rest of your life. The fitness, route-finding, and weather-management skills you build on these peaks translate directly to next-step objectives like Mount Whitney, Mount Hood, or international mountains like Kilimanjaro. We cover that step-up framework in our mountaineering for beginners guide and in our best beginner mountains progression.

Who this 12-week plan is for

The plan assumes you are starting roughly 14 weeks before your target first peak (Mount Wilson), with weeks 11 and 12 serving as a taper. It also assumes you have access to a local hill or trail with 1,000+ feet of gain you can use repeatedly. Most SoCal hikers train on the front-range trails: Eaton Canyon, Mount Wilson Toll Road, Echo Mountain, Bailey Canyon, or the Mount Lukens trails for those in the LA Basin; or the foothill trails near Claremont, Redlands, or Riverside for those further inland.

Phase 1: building the base (Weeks 1-4)

Phase 2: elevation gain (Weeks 5-8)

Phase 3: peak simulation (Weeks 9-10)

Phase 4: taper and first peak (Weeks 11-12)

12-week volume summary at a glance

Gear that makes the Six Pack noticeably easier

You can hike the SoCal Six Pack in trail runners and a daypack. Most hikers do. But four pieces of gear meaningfully improve the experience, particularly for the longer peaks (San Bernardino, San Jacinto Idyllwild route, and San Gorgonio).

Trekking poles. The descents from Baldy, San Bernardino, and San Gorgonio are 5,000-foot knee destroyers. Poles take 20-30% of the downhill load off your knees. They also help on the steep climbs. The full breakdown is in our snow travel gear guide which covers poles in context.

A properly sized daypack. 25-35 liters with a real hipbelt. The peak days require 3 liters of water, layers, food, a first aid kit, and a headlamp. Anything smaller and you start leaving things behind. A solid daypack that distributes weight to your hips (not your shoulders) is the single most-underrated piece of Six Pack gear.

Layered clothing for elevation. San Gorgonio at 11,503 feet can be 40°F at the summit when it is 75°F at the trailhead. A light insulation layer and a wind shell are mandatory for the high peaks. The layering framework is in our mountaineering for beginners guide.

Sturdy footwear with ankle support. Trail runners work for Wilson and Cucamonga. For Baldy, San Bernardino, San Jacinto, and San Gorgonio, a more supportive hiking shoe or low-cut boot reduces ankle fatigue significantly. Most local hikers run a hybrid: trail runners for the easy peaks, supportive hikers for the long days.

Recommended peak order across the season

The easiest-to-hardest order is the standard progression. Each peak builds on the fitness and confidence of the one before. Most hikers spread the six peaks across 6-10 weeks of the active hiking season:

1. Week 12: Mount Wilson — the warm-up. Confirms your training worked.
2. Week 14: Cucamonga Peak — first wilderness permit. Similar effort to Wilson but at higher elevation.
3. Week 16: Mount Baldy — first 10,000-footer. The altitude becomes noticeable above 9,000 feet.
4. Week 19: San Bernardino Peak — first long day with real altitude. 16 miles is a step up.
5. Week 22: San Jacinto Peak — choose your route. Tramway start is the friendly option. Idyllwild is the hard option.
6. Week 26: San Gorgonio Mountain — the crown. 19-22 miles, 11,503 feet, and the test of everything you have built.

This puts San Gorgonio in late August or September, which is the ideal window: trail snow-free, monsoon thunderstorm risk diminishing, and the cooler high-country temperatures making the long day manageable. Avoid attempting San Gorgonio in July when the heat at lower elevations makes the round trip miserable. The mountain weather framework that drives these timing decisions is in our mountain weather guide.

After the Six Pack: what comes next

The SoCal Six Pack is one of the cleanest training progressions in North America for hikers wanting to step up to mountaineering. The fitness, gear familiarity, weather decision-making, and confidence you build during the challenge are foundational for bigger objectives. The natural next steps depend on whether you want to stay non-technical or progress into mountaineering proper.

Stay non-technical: Mount Whitney (14,505 ft) via the standard trail is the obvious next objective. 22 miles, 6,100 ft gain, permit-required. If you finished San Gorgonio, you can finish Whitney with another 8-12 weeks of training focused on altitude tolerance. From Whitney the progression goes to higher non-technical mountains: Kilimanjaro (19,341 ft) which we cover in our Kilimanjaro training plan, and eventually Aconcagua (22,841 ft).

Progress into mountaineering: Mount Hood, Mount Adams, or Mount Shasta in the Pacific Northwest introduce snow travel, crampons, and ice axe skills. Mount Rainier is the standard graduation peak that requires real glacier travel and roped climbing. The progression framework for this path is in our best beginner mountains guide and our intermediate climbing guide.

The bottom line on Six Pack training

The SoCal Six Pack of Peaks is finishable for any moderately active hiker willing to put in 12 weeks of structured preparation. The peaks themselves are not technical. The challenge is the cumulative volume: 4,500 to 5,500 feet of elevation gain in a single day is what separates hikers who finish the challenge from hikers who quit at Mount Baldy. The 12-week plan above is the realistic on-ramp. Build your base in Phase 1, add elevation in Phase 2, simulate peak days in Phase 3, and taper smart in Phase 4. Six peaks across one season, in order, with the Mount Wilson warm-up confirming you are ready and San Gorgonio standing as the test you have earned.