Afternoon storm risk is the line that matters. Everything else is comfort. In summer, plan to be off the ridge before the build-up starts, not as it starts. Forecast for the summit point, adjusted for its elevation · data from Open-Meteo.
Centennial 13er · From Culebra Peak
Overview
Red Mountain is the reddish summit just south of Culebra Peak, the southernmost 14er in Colorado. Both peaks sit on a large private ranch in the Culebra Range east of San Luis. You can only climb them with a paid reservation from the landowner, on set days. Nearly everyone climbs Culebra first, then walks south along the ridge to Red Mountain, and then climbs back over Culebra on the way out.
There is little formal trail. The route climbs grassy slopes and talus to Culebra's northwest ridge, follows that broad, rocky ridge over a false summit to Culebra, then drops to a saddle and climbs a rubbly ridge to Red. It is Class 2 the whole way with no real exposure. The hard parts are the steep talus, the lack of a trail, and the need to reclimb Culebra on the way back. It suits fit hikers who are fine on rough, off-trail ground.
Plan on 7 to 9 hours round trip for about 7 miles and 4,000 feet of gain. You are above treeline almost the entire time, and the ranch sets strict start and finish times, so you cannot simply wait out a storm.
Plan of the day
Start by
At the earliest time the ranch allows. Be at the gate on time; late arrivals may not be let in, and storms often build over the range by late morning.
Turnaround
If you are not on Culebra's summit by 11 a.m., skip Red Mountain and head down. Leave Red's summit by noon at the latest, since you still have to reclimb Culebra.
Crux
The reclimb of Culebra from the Red Mountain saddle, late in the day and often in building weather. The talus slopes below Culebra's northwest ridge are also steep and tiring.
Route-finding
There is little trail, but the terrain is open. The ridges are broad and easy to follow in good weather. In fog, the wide ridges make it easy to drift the wrong way, especially coming back down Culebra's northwest ridge. Note where you left the ridge on the way up.
Water
There is no reliable water on the route. Carry all you need from the trailhead.
The ranch is in the far south of the San Luis Valley, east of the town of San Luis. Access is only by advance reservation through the landowner. The ranch sends directions and check-in times when you book. Follow them exactly, and check in at the gate at your set time. Rules on dates, times, fees and pets are set by the owner and can change from year to year, so read the current rules before you go. Pets are not allowed.
From the gate, a ranch road climbs to a parking area known as the Four-Way, at about 11,200 feet. The owners say a four-wheel-drive or all-wheel-drive vehicle is needed to reach it. Some higher-clearance cars may make it in dry weather. Stay on the road and within the areas the ranch allows.
RoadTalus and screeRidgeTundraScramblingExposed to lightning
The line is elevation, the band underneath is the ground, and the numbered dots match the steps below. Mileage and elevations are approximate.
1
Four-Way parking 11,200' · 0 mi
Start at the parking area where several ranch roads meet. Culebra's long northwest ridge rises to the east. Head east on the road or track toward the open slopes above.
Watch for: Stay within the areas the ranch allows.
2
Upper road 11,500' · 0.3 mi
Follow the road a short distance as it climbs through thinning trees into open meadows. Culebra's bulky summit ridge is in view ahead.
3
Leave the road 11,800' · 0.6 mi
Leave the road and head east up grassy slopes toward the northwest ridge. There is no clear trail here. Take a line up the broadest, grassiest part of the slope.
Watch for: Note where you left the road for the way back.
4
Talus slopes 12,400' · 1.1 mi
The grass gives way to rock and talus. The slope gets steeper. Zig-zag up and choose stable rock. This is the hardest sustained climbing of the day.
Watch for: Talus can shift. Keep a gap between you and others.
5
Northwest ridge 13,000' · 1.5 mi
You reach the crest of Culebra's broad northwest ridge. A large cairn marks the area where the route joins the ridge. Turn right and follow the ridge southeast.
Watch for: Remember this spot. On the way down, this is where you leave the ridge.
6
Ridge walk 13,400' · 1.9 mi
The ridge is wide and covered in rock and rubble. The walking is easy but slow. You will see the false summit ahead.
Watch for: Strong wind is common along the ridge.
7
False summit 13,900' · 2.2 mi
Climb over or skirt the false summit. From here you can see Culebra's true summit to the south and Red Mountain's reddish ridge beyond it.
8
Culebra Peak 14,047' · 2.5 mi
Culebra's summit is a rocky top with wide views over the San Luis Valley and into New Mexico. Check the sky and the time before going on to Red Mountain.
Watch for: Key decision point. If weather is building, go back the way you came.
9
South ridge of Culebra 13,700' · 2.75 mi
Head south down Culebra's rubbly south ridge. The ground is loose in spots. Red Mountain is directly ahead, its red rock easy to pick out.
Watch for: Loose rubble on the descent.
10
Red Mountain saddle 13,450' · 3 mi
Reach the low saddle between the two peaks. From here it is a short climb up the next ridge. Remember that you must regain the height you just lost on the way back.
11
Red's north ridge 13,700' · 3.25 mi
Climb the rubbly north ridge on reddish rock. The going is steady and not exposed.
12
Red Mountain summit 13,911' · 3.5 mi
The summit is a rocky, reddish top. Look back north at Culebra, which you will need to climb again. Head back soon.
Watch for: Do not linger. The return over Culebra takes time.
Landmarks to know
Four-Way parking area where ranch roads meet
Open meadows and the broad slope of Culebra's northwest ridge
Large cairn where the route meets the northwest ridge
False summit on the ridge before Culebra
Culebra's rocky summit with Red Mountain's red ridge to the south
Low saddle between Culebra and Red Mountain
Reddish rock on Red's north ridge and summit
Getting down
Walk back north down to the saddle, then climb back up to Culebra's summit. This reclimb is slow and tiring. From Culebra, retrace the ridge northwest over the false summit.
The most common mistake is missing the point where you left the northwest ridge on the way up. The ridge is wide, and in fog it is easy to keep going too far or to drop off the wrong side. Look for the large cairn, then head west down the talus and grass toward the road and the Four-Way. Go slowly on the steep talus below the ridge. Be back at the parking area in time to leave the ranch when the owners require it.
If things go wrong
Culebra's summit is the main decision point. If the weather looks poor or anyone is tired, skip Red Mountain and go back the way you came. Once past the saddle, you must reclimb Culebra to get home, so do not start toward Red unless the weather and your group are in good shape. If lightning is close, get off the ridge crest, spread out, and crouch low. If someone is hurt, keep them warm and still, and send someone down to the Four-Way to find ranch staff or other hikers. Call 911 when you can reach help.
3D flyover
No 3D flyover for this peak
After the first half mile there is no clear trail. Most of the climb is open slopes on the ranch with no set path. A flyover only works when there is a set trail to trace. Without one, the line would be a guess, and a guess could send you the wrong way on the mountain. Use the step-by-step route with a good map and GPS track instead.
See the trail on video
A climb of this route filmed by Ruggedland. The video belongs to them and only plays when you press play. This video covers Culebra and Red Mountain together.
Jump to
Other routes
Every way up Red Mountain A we list, with its class.
This describes the route on a dry summer day. Snow, ice, a washed-out road or an afternoon storm can make it a very different climb. Check recent conditions the week you go and turn around when the day tells you to.