Eiger

The Eiger needs no introduction. Its north face — the Nordwand, the "Murder Wall" — is one of the six great north faces of the Alps, first climbed in 1938 after years of fatal attempts. But there's a second Eiger most people overlook: the west flank, the normal route, the one that's been climbed since 1858. Charles Barrington made the first ascent on 23 August that year, guided by Christian Almer and Peter Bohren. It's the "easy" side. Don't let that fool you.

At 3,967 metres, you're breathing 61% of sea-level oxygen. That's not Himalayan territory — but your body knows something's changed. Resting heart rate climbs. Your legs feel heavier than the gradient suggests. For most climbers arriving from the Interlaken valley without altitude preparation, the first hour above 3,000m is the one that tells the truth.

The starting point is Eigergletscher Station (2,320m), reached by cog railway from Kleine Scheidegg. No mountain hut on the west flank — just an unofficial bivouac spot at 3,060m that climbers call the "Eiger Hilton": a flat ledge, wooden boards left by previous parties, and a view straight at the Mönch and Jungfrau.

Over one million tourists visit the Jungfraujoch (3,454m) every year by train. Most step outside, feel the altitude, and go back in. At that elevation — 63% oxygen — the body already reacts. The Eiger summit is 513 metres higher. The difference matters.

Technical Overview

Route

The normal route takes the west flank, starting from the col between the Eiger and the Rotstock (approximately 2,600m). You reach it from Eigergletscher Station in 30–60 minutes on foot, or via the Rotstock Via Ferrata — about 2 hours, more varied, worth doing if you want a proper warm-up before the real climbing.

From the col, the terrain is mixed: loose slate rubble and slabs tilted downward. That's the Eiger's geological signature. The rock behaves like a tiled roof coated in ball bearings. It's not vertical — but it's rarely solid. Every step counts.

The standard overnight stop is the "Eiger Hilton" at 3,060m — a level bivouac area right on the edge of a 600m drop into the north face. The view at sunset is extraordinary. You start climbing again before dawn.

The most demanding section for route-finding runs between 3,300m and 3,600m: a long diagonal traverse threading between cliff bands. Occasional pegs and cairns mark the way. The west ridge is gained at Point 3,668m. From there — circumvent the false summit to the right, cross the final snow crest, summit.

On descent: the west flank is genuinely dangerous going down. Slick, downward-tilting slabs and an unmarked route have caused more accidents than the ascent. Memorise key abseil pegs on the way up. Don't descend in mist without knowing the route cold.

Oxygen and Acclimatisation

At 3,967m, atmospheric pressure is roughly 63% of sea level. Your lungs extract less oxygen with every breath. SpO2 for healthy, well-prepared climbers typically sits between 86 and 92% at the summit.

AMS risk is moderate. Most people climb the Eiger in one or two days from Kleine Scheidegg (2,061m), without dedicated acclimatisation. Typical symptoms — frontal headache, mild nausea, unusual fatigue — tend to appear in the first few hours above 3,000m, especially if you slept at low altitude the night before.

One night at the Eiger Hilton bivouac (3,060m) acts as natural acclimatisation. Not mandatory — but the difference is real. Resting heart rate may increase by 10–15 bpm compared to the lowlands. That's normal. Loss of coordination or confusion isn't. If those appear, descend immediately.

A useful hack: the Jungfraujoch (3,454m) is minutes away by train. If you've already spent a few hours up there without symptoms, your body has started adapting. Use it as a pre-climb acclimatisation day.

Preparation

Essential gear

• Ice axe and crampons (10-point minimum) — the summit crest is often snow-covered even in summer
• Harness, 30m rope minimum, slings and carabiners for belay stakes
• Helmet — rockfall is a real risk throughout the route
• Layered clothing: the Eiger builds its own weather, fast
• Headlamp with spare batteries for the pre-dawn start
• At least 2 litres of water — no reliable water sources on route

Fitness and technical skills This isn't a route for beginners. You'll need solid experience on mixed terrain (rock, snow, ice), confidence descending loose ground, and the ability to navigate in terrain that doesn't show a clear path. A certified IFMGA mountain guide is strongly recommended unless you've already led multiple AD-grade Alpine routes.

Weather The Eiger creates its own weather. Storms build in hours even on forecast-stable days. July offers the most frequent settled windows. August is good but with higher afternoon storm risk. September is viable but icier. Always check MeteoSwiss and the SAC forecasts before committing to the day.

Frequently Asked Questions

How much oxygen is there on the Eiger summit?

At 3,967m, you breathe 61% of sea-level oxygen. A healthy climber's SpO2 typically falls to 86–92% at the summit. Symptoms of acute mountain sickness — headache, nausea, fatigue — can develop, especially if you haven't acclimatised and ascended quickly from the valley.

Do you need a mountain guide for the normal route?

Not legally — but practically, yes for most climbers. The west flank looks straightforward from below. It isn't: slippery downward-tilting rock, an unmarked descent, serious rockfall exposure, and complex route-finding in the middle section have caught many experienced climbers off-guard. Unless you've done similar AD routes in the Alps before, hire an IFMGA guide.

How do you get to the starting point?

Take the Jungfraubahn cog railway from Interlaken Ost via Grindelwald or Lauterbrunnen to Kleine Scheidegg (2,061m), then continue to Eigergletscher Station (2,320m). Trains run every 30–60 minutes in high season. The train ride itself is part of the experience — the Eiger's west face is right above you the whole way up.

What's the best time to climb the Eiger?

July, with at least a 2–3 day settled weather window. The Eiger's own microclimate means standard valley forecasts can be off. Don't start with anything less than a solid high-pressure forecast. Afternoon thunderstorms are common in August — plan to be off the exposed upper mountain by early afternoon.