---
title: "Passo Costalunga (Karerpass)"
type: "pass"
lang: "en"
elevation_m: 1745
region: "Trentino-Alto Adige"
valleys: "Bolzano and Val di Fassa"
url: "https://dolomites-guide.com/dolomites-passes/passo-costalunga/"
description: "Passo Costalunga, at 1,745 m, overlooks Lake Carezza. Bus 180 climbs to it from Bolzano, and trails reach it from the lake and the Val di Fassa."
---

# Passo Costalunga (Karerpass)

Passo Costalunga, or Karerpass, lies between the Catinaccio and the Latemar, just above Lake Carezza. Here is how to reach it by bus from Bolzano or the Val di Fassa, which trails climb to it and when to go.

- Elevation: 1745 m
- Region: Trentino-Alto Adige
- Valleys: Bolzano and Val di Fassa

Passo Costalunga (Karerpass in German) is at 1,745 m (5,725 ft). Do not confuse it with Lake Carezza, just below.

## Where is Passo Costalunga and what can you see from it?
The pass sits on the ridge that separates the Catinaccio (Rosengarten) massif from the Latemar. From the pass, both massifs are in front of you, along with the Roda di Vael.

## Pass or Lake Carezza?
**These are two different stops.** Lake Carezza (Karersee) is a small mountain lake known for its deep green water.

From the lake, cross the suspension bridge and follow trail 6 to the pass: allow 1 hour for 3.2 km (2 mi) and 200 m (656 ft) of climbing.

![Lake Carezza and its green water](/images/costalunga-lake-carezza-latemar.webp "Lake Carezza.")

## How do you get to Passo Costalunga?
**By bus**, line 180 of Südtirol Mobil serves the pass every hour from Bolzano, with a stop at Lake Carezza. On the Val di Fassa side, it usually starts from Pera di Fassa, but in July and August from Vigo di Fassa only. Check timetables with Südtirol Mobil.

**By car**, the pass is on the SS 241. Road conditions in South Tyrol can be followed on the [traffic information centre of the Province of Bolzano](https://verkehr.provinz.bz.it).

## What can you do from Passo Costalunga?
**Walk up to Rifugio Paolina**, for a second viewpoint, higher than the pass.

**Arrive on foot from the valley**: two climbs, both longer than the one from the lake:

- from Moena, in the Val di Fassa, on trail 519: 2 hours 30 minutes for 6.45 km (4 mi) and 580 m (1,903 ft) of climbing;
- from Nova Levante (Welschnofen), on trails 10 A, 10, 13 then 21: 3 hours for 9.1 km (5.7 mi) and 688 m (2,257 ft) of climbing.

These are one-way routes.

![Passo Costalunga and its road seen from above](/images/costalunga-pass-aerial.webp "The pass from the air.")

## When should you go to Passo Costalunga?
**In summer, avoid the peak hours**, 9 am to noon. For the lake, come in the evening or early in the morning, when it looks its best.