Lonza Biwak (2975 m) in Switzerland – SAC mountain hut
Live availability · updated … Gallery · 1 photo
Swiss Alpine Club

Lonza Biwak

2975 m · Switzerland · ZERMATTERS BAHNHOFSTRASSE 58 CH-3920 ZERMATT +41 27 966 24 66
Bookable online SAC 8 beds
Lonza Biwak
Altitude
2975 m
Beds
8
Association
Swiss Alpine Club
Season
open from 13 Oct 2026
Max. nights
20
Current availability – free beds by date
Number in cell = free beds many (4+) few (1–3) fully booked closed
Next 14 nights
  • 13 Oct 20268 free
  • 14 Oct 20268 free
  • 15 Oct 20268 free
  • 16 Oct 20268 free
  • 17 Oct 20268 free
  • 18 Oct 20268 free
  • 19 Oct 20268 free
  • 20 Oct 20268 free
  • 21 Oct 20268 free
  • 22 Oct 20268 free
  • 23 Oct 20268 free
  • 24 Oct 20268 free
  • 25 Oct 20268 free
  • 26 Oct 20268 free
As of 13 Oct 2026 · free beds from the official reservation system. The calendar below loads live availability in your browser.

Add to planner → Book on hut-reservation.org →
Bed alert
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Pick a date and leave your e-mail. We’ll write the moment a bed opens up at Lonza Biwak on that day.
Blatten
Stay in the valley
Blatten
Arrive the day before and spend the night in the valley, so you start the climb rested.
Hotels & guesthouses near Blatten · Booking.com
Booking.com →
Foto Blatten: Anidaat · CC BY-SA 4.0 · Wikimedia
Hut team & contact
ZERMATTERS BAHNHOFSTRASSE 58 CH-3920 ZERMATT +41 27 966 24 66
0279662466 www.zermatters.ch ↗ View on Google Maps ↗

Lonza Biwak is a mountain hut at 2975 m in Switzerland. It is operated by the Swiss Alpine Club (SAC). It offers 8 beds in 1 category (Massenlager). The hut is managed by ZERMATTERS BAHNHOFSTRASSE 58 CH-3920 ZERMATT +41 27 966 24 66. Overnight stays can be booked online – see the current availability by date above.

Bed categories

CategoryBeds
Massenlager · ML8
Schutzraum/Winterraum · SrWr0
Categories and beds according to the official reservation system. Prices per night vary by hut, so check the booking system.

What to pack

Sleeping bag liner
Sleeping bag liner
Required in huts
Browse at 4camping →
Hiking boots
Hiking boots
Ankle-high, for multi-day treks
Browse at 4camping →
Waterproof jacket
Waterproof jacket
Hardshell, 3-layer
Browse at 4camping →
Backpack 30–40 l
Backpack 30–40 l
Multi-day, with rain cover
Browse at 4camping →
Trekking poles
Trekking poles
Telescopic and foldable
Browse at 4camping →
Headlamp
Headlamp
Rechargeable
Browse at 4camping →
Layered clothing
Layered clothing
Base layer, merino
Browse at 4camping →
First-aid kit
First-aid kit
+ emergency blanket
Browse at 4camping →

FAQ about the Lonza Biwak

Can you stay overnight at Lonza Biwak?+

Yes. Lonza Biwak offers 8 beds and is managed by ZERMATTERS BAHNHOFSTRASSE 58 CH-3920 ZERMATT +41 27 966 24 66. See the current availability by date above.

How do I reserve a bed at Lonza Biwak?+

Lonza Biwak is bookable online. Check the free beds for your date above and reserve via the official Alpenverein system (hut-reservation.org).

How do I know if beds are still free?+

The live availability above shows the free places per day – updated daily from the official reservation system.

At what altitude is Lonza Biwak?+

At 2975 m in Switzerland.

What rooms and dormitories are there?+

8 beds in 1 category: Massenlager (8).

How many nights can I stay?+

Up to 20 nights in a row.