Skip to content
iRun42
MarathonTrail🇨🇭 Flims, Switzerland

Swissalpine K42

Saturday, 17 July 2027In 9 months · Start 09:30

Official site

A mountain marathon above Flims and Laax with views over the Rhine Gorge (Ruinaulta) and the Glarus Alps.

Something out of date? Suggest a correction · Organizer of this race?

Facts checked 10 Oct 2026 against swissalpine.ch, swissalpine.ch.

Elevation gain
2,609 m
Mountain · ↓ 2,609 m
Start altitude
1,081 m
above sea level, from terrain data
Temp at start
16°C
Peaks around 22°C
Entry fee
≈ $155
Open entry
Finishers
—
typical year
Course
Loop
11.5h cut-off
Getting thereFly into ZRH (Zurich), about 89 km from the start

Course map

A detailed route is not available for this race yet. The marker shows the race location.

Elevation profile

Mountain: about 2,609 m of climbing and 2,609 m of descent. A detailed profile isn’t available for this race yet.

Race-day weather

At start
16°C
Peak during race
22°C
Humidity
63%
Chance of rain
24%
Wind
4 km/h

Race day in past years

Historical averages for 17 July ±3 days, 2016–2025, from 09:30 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

Share this race

WhatsAppFacebookXEmail
Organizing this race? Add it to your website

Show your runners the course facts and race-day weather. Paste this code into your site; it displays the badge below and links to this page. It updates automatically when the race details change.

Plan your trip

Searches are set for Flims and the race weekend.

Hotels near the start lineClosest first · 2027-07-16 → 2027-07-18Booking.com Flights to FlimsArrive 2027-07-15, fly home 2027-07-19Google Flights Things to do in FlimsTours and attractions in Switzerland for the days around the raceGetYourGuide

Gear for this race

Trail running shoesGrip for the unpaved sectionsHydration vestCarry water and food between aid stationsElectrolyte tabletsIt often reaches 22°C during the raceTrekking polesHelp on long, steep climbs

Some of these are affiliate links: if you book or buy through them we may earn a commission, at no extra cost to you.

Around the same time

All races in July 2027 →
🇨🇭 St. Niklaus, Switzerland

Gornergrat Zermatt Ultra-Marathon

3 Jul 2027In 9 months
Gain
2,616 m
Start temp
16°C
Entry
$240
45.8 kmMixed road & trailOpen entryaltitude
🇫🇷 Chamonix, France

Marathon du Mont-Blanc

27 Jun 2027est.In 9 months
Gain
2,540 m
Start temp
14°C
Entry
$90
42 kmTrailLotteryaltitude
🇨🇭 Burglauenen, Switzerland

Eiger Ultra Trail E35 North Face Trail

17 Jul 2027In 9 months
Gain
2,500 m
Start temp
15°C
Entry
$285
35 kmTrailLotteryaltitude