Kala Patthar: The Viewpoint Above Everest Base Camp

How High Is It

The height of Kala Patthar depends on who you read, and the gap is worth knowing before you claim a personal best. Wikipedia gives the usual figure as 5,545 to 5,550 m (18,192 to 18,209 ft) but records GPS readings far higher, including 5,644.5 m (18,519 ft) in 2008. The Three Passes trek page of We Seek Travel lists it at 5,643 m as the highest point of that route. Wikipedia attributes the discrepancy to different measured points and notes, with a citation-needed tag, that the prayer-flag summit measures above the 5,545 m ridge point. The table below puts the main points of the area side by side from the same sources.

No climbing permit is needed for Kala Patthar, which Wikipedia calls the highest altitude most people reach without one. Only the two standard trek permits for the Khumbu apply, the Sagarmatha National Park entry and the Khumbu Pasang Lhamu Rural Municipality fee, according to Nepal Hiking Team.

What You See and Why It Beats Base Camp

The reason trekkers drag themselves up a dark hill at four in the morning is simple: from base camp you mostly cannot see Everest. Wikipedia explains that Nuptse blocks Everest's high summit from much of the region, and Nepal Hiking Team says the view of the mountain is almost completely blocked at base camp. Holy Mountain Treks puts it the other way round: Everest is the sight not visible from base camp itself.

From the summit of Kala Patthar the line-up runs Everest at 8,848.86 m (29,031.7 ft), Nuptse at 7,861 m, Changtse at 7,543 m and Lhotse's northern flank at 8,516 m, with Pumori at 7,161 m and Ama Dablam at 6,812 m also visible according to Nepal Hiking Team. Holy Mountain Treks adds the Khumbu Glacier and Khumbu Icefall below, and one source lists Changtse at 7,583 m rather than 7,543 m. Wikipedia adds that the hill's prominence is only 10 m, so the climb is short but the position is what matters. The view is the most accessible close-up of Everest there is without a climbing permit, which is why treks such as the Everest Base Camp 12 Days trek and the Everest Three Passes Trek build in the climb.

Time, Distance and Effort

The trail starts at Gorak Shep, given as 5,163 m on the Wikipedia Kala Patthar page and 5,164 m on the Gorak Shep page. Wikipedia says the ascent usually takes 1.5 to 2 hours, and starting from Lobuche instead adds two to three hours one way. Nepal Hiking Team puts the distance from Gorak Shep at roughly 2 km with a descent of around an hour, and Holy Mountain Treks gives a round trip of 3.7 km with 420 m of elevation gain in about 2 hours.

The final stretch is a 5 to 10 minute boulder scramble to the prayer-flag summit, per Wikipedia. For comparison, the walk from Gorak Shep to Everest Base Camp takes 1.5 to 2.5 hours according to Wikipedia, so the side trips are comparable walks.

Sunrise Against Sunset

Both starts work and both have a cost. Nepal Hiking Team says sunrise climbers leave around 4:00 to 4:30 AM and sunset climbers start 4:00 to 5:00 PM. Sunset brings fewer crowds but more afternoon cloud and wind.

Holy Mountain Treks recommends the morning hike because evening cloud is common and there is a risk of walking the last stretch in the dark, saving sunset for a clear forecast and the alpenglow it can produce. The pre-dawn cold is real: Nepal Hiking Team says temperatures regularly hit minus 10 to minus 15 degrees. Kandoo Adventures lists base camp nights at minus 17C in March and minus 8C in May, and Everest Trekking Routes lists base camp night lows of minus 25C from December to February, so dress for the worst month you trek in.

Sunrise is the pick for most people, and the viewpoint is a stop on treks such as Island Peak and EBC Climb.

Altitude Advice

At roughly 5,545 m you are higher than the Nepal base camp at 5,364 m and breathing air with far less oxygen than at sea level. Altitude sickness typically occurs only above 2,500 m and symptoms often show within ten hours of ascent, per Wikipedia. Headache, nausea, fatigue, dizziness and poor sleep are the AMS signs listed by Himalayan Hero, which advises limiting sleeping-altitude gains to 300 to 500 m per day above 3,000 m and never ascending with worsening symptoms, while HACE needs immediate descent.

Wikipedia advises no more than 300 m of sleeping gain per day above 3,000 m. The practical rule for Kala Patthar: reach Gorak Shep after proper acclimatisation days lower down, climb slowly, and turn back if symptoms worsen. The aid post at Pheriche, manned twice yearly in trekking season by volunteer doctors of the Himalayan Rescue Association, sits on the route below.

The Tours That Land There

Two bookable listings in this site's comparison name a Kala Patthar landing, and a third uses a helicopter on the way down. The Everest Base Camp Helicopter Landing tour costs $1,600 per person, runs 5 to 6 hours from Kathmandu, seats five passengers per helicopter and includes hotel pickup, with national park fees, municipal tax and airport tax not included. The Everest View Hotel Helicopter Breakfast tour costs $1,352 per person, runs 6 hours, and offers a Kala Patthar or base camp landing weather permitting, with breakfast at Everest View Hotel at 3,880 m. The EBC Trek with Helicopter Return trek costs $2,250 per person over 12 days and finishes with the helicopter from Gorak Shep to Lukla instead of a landing, which suits trekkers who climb on foot first.

Ground time at the top is short. Amazing Nepal Trek lists 8 to 10 minutes on the ground in its itinerary and 10 to 15 minutes in its information section, so the operator itself disagrees. Alpine Adventure Club says its landing there is subject to weather and local government permission and gives no time limit. Landings are also restricted by rule: Nepal's National Park Authority told operators that regular flights may land only at Lukla, Namche and Syangboche, with flyovers of Kala Patthar and base camp permitted, reports Onlinekhabar, which notes the Park Authority became much stricter after a helicopter crash in the region killed six people. Treat a landing as possible, never as certain.

When you weigh the flight against the trek, remember the trek versions cover the climb on foot: the 14-day Everest Base Camp Trek 14 Days at $1,800 per person lists Kala Patthar at 5,555 m as its maximum altitude. Operator pages outside this catalog quote other helicopter prices, and only the US dollar card prices here are bookable trip prices.