100 Miles Trail Ultra

All the info you need is in the RacePM which will be sent out 10 days before the race.

100 miles, från Sjö till Hav, heading south from Mariefred the historic town on the banks of Lake Mälaren, crossing the region to the coastal village, Nävekvarn.

2800 vertical metres of climbing. 60% Trail, 30% Gravel, 10% Asphalt

The route is mainly single-track trail, wider farm trails and gravel roads with some sections of asphalt. Mainly following a network of pre-marked trails, Sörmlandsleden & Eriksgata.

Download the latest GPX-file of the route, updated April 17th:
S100_100m_260417.gpx

Registration closes on Thursday September 10th at 23:59.
Please note that the race might be full ahead of this time.

registration

Start: 12:00, Friday September 11th,
Gripholms Slott, Mariefred.

Finish: Nävekvarns Folkets Park

Elevation: 2 800 meters

Stifa: 17,39

Registration fee: 1950 SEK, December 1st 2025–February 28th 2026
2150 SEK, March 1st–May 31 st 2026
2350 SEK, June 1st–September 10th 2026

Race numbers: Race numbers and trackers collection from 10:00–11:30 on sept 11th at the START only.

Bus transfer:
Here are the departure times for the bus transfer, be sure to arrive in time.
09:15 Nävekvarn Folkets Park
09:35 Nyköping Centralstation
10:45 Läggesta Tågstation
11:00 Arrive Mariefred

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

    1. Laxne, 14,5 km
      59°11'36.8"N 17°11'05.0"E

    2. Sörmlandsleden korsning, 32 km
      59°06'34.2"N 17°18'52.9"E

    3. Erikslund, 46 km
      59°02'21.7"N 17°13'33.2"E

    4. Penningby, 62 km
      58°57'51.5"N 17°08'12.7"E

    5. Likstammen, 76 km
      58°56'18.0"N 17°13'42.0"E

    6. Tystberga 88 km
      58°50'58.0"N 17°14'49.2"E

    7. Förola, 98 km
      58°49'47.4"N 17°07'12.8"E

    8. Söra, 111 km
      58°47'17.7"N 16°59'46.7"E

    9. Nyköping, 121 km

    10. Kila, 134 km
      58°43'37.8"N 16°53'24.3"E

    11. Gälkhyttedammen 147 km
      58°41'31.6"N 16°48'38.3"E

    12. Nävsjön 156 km
      58°39'44.0"N 16°44'07.6"E

    13. Dammkärr 165 km
      58°37'58.0"N 16°45'47.4"E

  • • Sörmlands 100 Trail Run Buff
    • Live GPS Tracking and split times throughout the race
    • GPX file of the Route & Route Map
    • Sörmlands 100 Window Sticker
    • Access to Nävekvarn Folkets Park after race arean and sauna after the race
    • Hand made, wooden belt buckle
    • 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.

  • Erikslund, 46 km 
    Closes at 21:00. Max time 9 hrs.

    Liksstammen 76km
    Closes at 03:00. Max time 15 hrs.

    Tystberga, 88 km
    Closes at 05:00. Max time 17 hrs.

    Nyköping, 121 km
    Closes at 14:00. Max time 26 hrs.

    Nävsjön, 156 km
    Closes at 21:00. Max time 33 hrs.

    Dammkärr, 165 km
    Closes at 00:00. 36 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
    • First aid kit
    • Route Map*
    • Gps tracker*
    • Race number*
    • Emergency foil blanket or bivi bag
    • Rain jacket.
    • Head torch plus extra batteries/powerbank (or an extra headlamp) 
    • A small red light to be attached to the back of your pack after dark

    *Provided at check in

    However, we also recommend the following:
    • Spare long sleeve top base layer
    • Whistle
    • Hat or buff and gloves
    • 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.

  • Will be updated closer to race day.

    Saturday, September 12th
    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