13,256 ft · San Juan Mountains, Colorado
S 4
S 4 is a 13,256 ft peak in the San Juan Mountains, Colorado. The standard route is the S.4 South Face-W. Ridge: 10 mi, 3,895 ft of gain, Class 3.
S 4 at a glance
- Elevation13,256 ft4,040 m
- RouteS.4 South Face-W. RidgeClass 3
- Distance10 mi3,895 ft gain
- Time9 – 11 hrsVery Hard effort
- SeasonJul – Sep
- RangeSan Juan MountainsColorado
Climbing the S.4 South Face-W. Ridge
S 4 sits in the San Juan Mountains. The usual ascent is S.4 South Face-W. Ridge, rated Class 3. Plan about 10.4 miles round-trip with roughly 3,895 ft of gain from about 9,350 ft. The trailhead is typically reachable by passenger car. Summer monsoon storms build fast, so start early and be off the summit by early afternoon. Watch for loose rock, route-finding on talus, and brief exposed steps where the terrain steepens. Stats and approach details follow climb13ers.com. A helmet is wise on loose Class 3 sections.
Gear and hazards
What to bring
Backpack (30–40 L)
Hiking Boots
Water
Offline Maps
Headlamp
Satellite Communicator
Whistle
Sunglasses
Sunscreen
Sun Hat
Midlayer
Insulated Jacket
Hardshell Jacket
Warm Hat
Buff
Midweight Gloves
Trekking Poles
GPS Device
Power Bank
Water Filter
First-Aid Kit
Emergency Bivy
Helmet
What to watch for
- Storms
- High altitude
- Loose rock
- Steep exposure
- Route-finding difficulty
Quests with S 4
Colorado 13ersPeaks near S 4
Frequently asked questions
How tall is S 4?
S 4 is 13,256 feet (4,040 m) tall. It is in the San Juan Mountains, Colorado. It is also known as S 4.
How does S 4 rank among the Colorado 13ers?
At 13,256 feet, S 4 is the 381st highest of the 582 Colorado 13ers. The highest is Grizzly Peak.
How hard is it to climb S 4?
The S.4 South Face-W. Ridge is Class 3, which means scrambling, where you use your hands to climb and a fall could be serious. Yak rates the overall effort very hard: 10 miles with 3,895 feet of elevation gain.
How long does it take to climb S 4?
Most people take 9 – 11 hours round trip on the S.4 South Face-W. Ridge, covering 10 miles with 3,895 feet of elevation gain. That is a long day, so start before dawn and set a turnaround time.
Is S 4 dangerous to climb?
It has real risks: exposed sections where a fall would be serious, rockfall from loose rock and fast-changing weather. Go with an experienced partner, wear a helmet, test holds before you trust them and turn back if the rock is wet or icy.
Do you need a helmet for S 4?
It is a good idea. Loose rock and rockfall are common on the S.4 South Face-W. Ridge, so a helmet is on the gear list.
Will you get altitude sickness on S 4?
You might. Most people feel the altitude above 8,000 feet, and S 4 reaches 13,256 feet. Spend a night or two at elevation first, drink plenty of water and turn back if a headache, nausea or dizziness gets worse.
What time should you start climbing S 4?
Early. Afternoon thunderstorms are common in summer, so aim to be off the summit and the exposed upper mountain by early afternoon. At 9 – 11 hours round trip, many parties start in the dark.
When is the best time to climb S 4?
The usual climbing window is July to September. Outside it, expect snow, storms or closed access, and check the summit forecast before you go.
Climb S 4 with Yak
Plan your route on a topo map, check the summit forecast, then log your climb and see what is left on your list