50 km Trail Ultra

Presented by Klättermusen

All the info you need is in the RacePM.

Starting in the Nyköping runners will follow the stunning rolling trails of the Sörmlandsleden to the finish area in Nävekvarn.

800 vertical metres of climbing. 80% Trail, 10% Gravel, 10% Asphalt 

The route is mainly single-track trail, wider farm trails and gravel roads with some sections of asphalt, following Sörmlandsleden.

Download the latest GPX-file of the route, updated September 3rd:
S100 50k 250903.gpx
S100 50k 250903.gpx.zip

registration

Registration closes on Thursday September 4th at 23:59.
Please note that the race might be full ahead of this time.

The Klättermusen partnership
In 2025, Klättermusen joins us as the presenting partner for the Sörmlands 50K. They’ve been making durable, responsibly built gear in Sweden for 50 years, and it just fits. Like us, they care about the outdoors, doing things the right way, and building a community around shared values. This isn’t about hype — it’s about showing up, being part of something real, and supporting the people who make trail running what it is.

Start: 10:00, Saturday September 6th. Nils Oscar Bryggeri, Fruängsgatan 2, Nyköping. 58°44'51.1"N 17°00'22.3"E

Finish: Nävekvarns Folkets Park

Elevation: 800 meters

Stifa: 14,55

Registration fee: 1050 SEK 31 jan - 30 apr
1150 SEK 01 maj - 05 sep

Race numbers: Collect your race number in the reception at Nävekvarns Havscamping on Friday September 5th between 17:00–21:00 or at the start in Nils Oscar Bryggeri on Saturday September 6th between 09:00–09:45.

Bus transfer:
Here are the departure times for the bus transfer, be sure to arrive in time.
08:45 Nävekvarn Folkets Park
09:20 Nils Oscar Bryggeri, Nyköping

50K Training plan

  • Info on what will be available at each aid station will be updated at a later time.

    1. Kila, 14,9 km
      58°43'37.8"N 16°53'24.3"E

    2. Gälkhyttedammen 27,5 km
      58°41'31.6"N 16°48'38.3"E

    3. Nävsjön 36,0 km
      58°39'44.0"N 16°44'07.6"E

    4. Dammkärr 45,9 km
      58°37'58.0"N 16°45'47.4"E

  • • Sörmlands 100 Trail Run Buff
    • Live results and split times throughout the race
    • GPX file of the Route
    • Exclusive Run Happy Sörmlands 100 Trail Run Socks (optional extra)
    • Sörmlands 100 Window Sticker
    • Access to Nävekvarn Folkets Park after race arean and sauna after the race
    • Hand made, wooden finishers medal
    • Well stocked aid stations, including stops at some for Sörmlands finest restaurants and food producers
    • Medical teams on the course
    • After race refreshments, locally produced hot food and Mineral Brewing alcohol-free beer.

  • Max time 14 hrs.

  • The compulsory kit list is as follows:
    • Bottles or Bladder with capacity for 1 litre of liquid
    • Mobile phone with race director and medical team number saved
    • Some form of navigation tool, for example the app Min Karta. This is so that you can give a position in an emergency
    • Race number*
    • Emergency foil blanket or bivi bag

    *Provided at check in

    However, we also recommend the following:
    • Head torch plus extra batteries/powerbank (or an extra headlamp), if you think you will take more than 8 hours to finish.
    • A small red light to be attached to the back of your pack after dark, if you think you will take more than 8 hours to finish.
    • Whistle
    • Emergency food 500cal (eg 2 Snickers)
    • Cup, The race is cupless which means you must bring a cup with you if you want any hot drinks along the way
    • Emergency money or card

    We are a small organization and as the course is quite long, and often hard to access by car, it may take several hours between the time you decide to drop out and the time we can pick you up. Please prepare your kit so that you can keep warm and dry if this situation should occur.

  • Saturday, September 6
    Shuttle buses will depart at 20:00 and 21:00 from Nävekvarn Camping to Nyköping Central Station. Cost: 100 SEK. Payment via Swish on site. If you don’t have Swish, please speak to the merch table before leaving.

    Public bus (line 561) departs from the bus stop outside the village store (approx. 8 minutes’ walk from the finish area):

    17:50⇢18:23, Nyköping Central Station
    22:19⇢22:52, Nyköping Central Station