My marathons

Jungfrau Marathon

The organiser has not published a date. Eiger
Jungfrau
© OpenStreetMap Jungfrau. Photograph by Murray Foubister, CC BY-SA 2.0 via Wikimedia Commons . Course line © OpenStreetMap contributors

The course

Pick a place, or drag along the profile

Flat to km 10, a steep climb of 73 m to km 12, then a long climb of 1621 m home from km 16.

StartFinish

© OpenStreetMap contributors

  1. Photo: Leonhard Lenz, CC0
  2. Photo: Andrewrabbott at English Wikipedia, Public domain
  3. Photo: Leonhard Lenz, CC0

km 30.6mile 19

Wengen railway station

The first control point is at Wengen station, km 30.7, with a running-time limit of 4 h 25 min.

Photo: Andrewrabbott at English Wikipedia, Public domain

Height drawn many times taller than life. Heights: GEDTM30.

Course elevation profile, 8× vertical exaggeration Elevation along the course from km 0 to km 42. The trace runs between 566 and 2283 metres, a range of 1718 metres, drawn at 8 times vertical exaggeration so the shape is legible. Smoothed over 1 km before this profile was derived. An unsmoothed urban surface carries the buildings and would assert a climb that is not there. The dashed stretches are bridge decks: (unnamed span), km 19 to 19.2; (unnamed span), km 19.5 to 19.6; (unnamed span), km 24.7 to 24.9. A bare-earth model reads the ground or the water beneath a bridge, not the deck the runner is on, so those runs are interpolated between the ground either side rather than measured, and they under-report the real climb across a span.
0 10 20 30 40 km
0 10 20 26.2 mi

Dashed: bridge

  • flat to 10
  • steep climb to 12
  • long climb home

Your 5 gels, at the orange marksFor a 4:00 finish, one every 40 minutes

  1. km 7mile 4.4
  2. km 14.1mile 8.7
  3. km 21.1mile 13.1
  4. km 28.1mile 17.5
  5. km 35.2mile 21.8

Get them on AmazonAmazon partner link

The course in short 2 lines
  • From Interlaken to the EigergletscherPoint to point, Interlaken to the Eigergletscher, via Wengen and Wengernalp.
  • Flat for 25 km, then 1,490 m up in 17Net +225 m to km 25, then 1,490 m up to a finish near 2,280 m.
Course notes 2 short reads on the course
km 0 to 42.2GeometryFrom Interlaken to the EigergletscherPoint to point, Interlaken to the Eigergletscher, via Wengen and Wengernalp.

The organiser describes the course as changing scenery: along Lake Brienz, through traditional mountain villages and up to the glacier. In 2026 runners who passed Wengen station had to do so within 4 h 25 min of running time, and the Wengernalp control at the Wixi junction within 5 h 50 min. When many runners are on the course, a relief section of exactly the same length is opened at km 38.9.

Sourced

km 25 to 42.2GradientFlat for 25 km, then 1,490 m up in 17Net +225 m to km 25, then 1,490 m up to a finish near 2,280 m.

Total climb is 1,778 m. From a start near 570 m the road stays under 820 m until about km 22 and reaches Wengen station at about 1,290 m. The next three 5 km stretches add about 360 m, 320 m and 350 m, the last of them ending at the finish near 2,280 m.

Measured

Race fuel

Energy gel
An energy gel sachet
Illustration · drag to turn

5 gels for Eiger, plus 1 spare

Finish

One every 40 minutes, the orange marks on the profile, by the clock:

  1. km 7mile 4.4
  2. km 14.1mile 8.7
  3. km 21.1mile 13.1
  4. km 28.1mile 17.5
  5. km 35.2mile 21.8

Our pick: SiS BETA Fuel gel, box of 6, strawberry and lime. 40 g of carbohydrate a gel, about twice a usual gel, from two kinds of sugar your body takes up side by side.

Easy to forget on race morning: pack them with your bib the night before.

Get it on Amazon

We earn a small fee if you buy through these links. The price is the same.

In Canada the button opens GU Energy Gel, Salted Caramel, 24-pack, the best seller there.

Outside the Netherlands, Belgium, Germany, Austria and Switzerland, the UK and Ireland, Spain and Portugal, Italy, the rest of the EU and Canada the button opens GU Energy Gel, Chocolate Outrage, 24-pack on Amazon.com, the best seller there.

Anti-chafe
Compeed Anti-blister stick
Photo: Compeed

Compeed

Compeed anti-blister stick, 8 ml

Best selling on Amazon amazon.nl, read 2 Nov

An invisible layer before the start keeps seams, straps and shoes from rubbing skin raw.

Put it on before you leave for the start: heels and toes, inner thighs, under a bra or heart-rate strap.

Try it on a long run first, like everything you use on race day.

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We earn a small fee if you buy through these links. The price is the same.

Number belt
A race number belt
Illustration · drag to turn

Compressport Race Belt

Holds your bib without safety pins through your top, with loops for up to 8 gels.

Clip the bib on the night before, so it goes on with your shorts in the morning.

Keep the number on the front, where officials and photographers can see it.

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We earn a small fee if you buy through these links. The price is the same.

Electrolytes
A tube of electrolyte tablets
Illustration · drag to turn

SiS Hydro electrolyte tablets, tube of 20

One tablet in a bottle puts back some of the salt you sweat out.

One tablet in 500 ml of water in the hour before the start.

Only if you have used them in training: nothing new on race day.

Get it on Amazon

We earn a small fee if you buy through these links. The price is the same.

Blister plasters
Compeed Blister plasters, medium, 6
Photo: Compeed

Compeed

Compeed blister plasters, medium, 6

Best selling on Amazon amazon.nl, read 2 Nov

One in a pocket cushions a blister if one starts.

Put it on clean, dry skin and leave it until it comes off by itself.

Give a couple to whoever comes to cheer, so they are there at the km you need them.

Get it on Amazon

We earn a small fee if you buy through these links. The price is the same.
distance
42.2 km26.2 mi
climb
1778 m5833 ft

The Jungfrau Marathon is a hilly course of 42.2 km with 1,778 m of climbing. Its lowest point is 566 m and its highest 2,283 m above sea level.

Trip

Getting a place

Entry through the organiser

Entry details on the organiser’s site →

The organiser, a third party. We take no entries and have no part in the race.

Sources and licence

Last checked.

Course line matched onto OpenStreetMap road geometry: (c) OpenStreetMap contributors, Open Database License 1.0 (ODbL). Elevation sampled from GEDTM30, Global Ensemble Digital Terrain Model at 30 m (v1.2): Elevation: GEDTM30 (Ho & Hengl, OpenGeoHub), CC BY 4.0, Creative Commons Attribution 4.0 International (CC BY 4.0).

Elevation gain computed by us from that line, smoothed over 1 kmsmoothed over 0.6 mi.

The line follows the road down its middle, so it measures 0.66% longer than the certified distance, which is measured on the shortest legal line through every bend.

Date and entry information from the organiser.

Every source and licence behind them →

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