Distances: 43 km, 22 km and 10 km.
Location: Nävekvarns IP, Nävekvarn
Date: 7th February 2026
Registration:Race-ID
Start Times: 43 km 09:00, 22 km 10:00 and 10 km 11:00
Cut-Off Time: 10 hours for 43 km, 6 hours for 22 km, 3 hours for 10 km..
Timing & Results: Chip timing for all participants.
Parking & Transport: Parking is available at the start/finish area for a small fee to NGIF.
The 43 km runners complete one full lap of the Tunabergsrundan loop.
The 22 km and 10 km routes follow shorter sections of the same terrain.
Expect varied terrain including forest paths, rolling hills, and coastal landscape.
A true winter trail running experience.
Race numbers are collected at the start area (Nävekvarns IP) up to 30 minutes before your race start.
Parking is available at NGIF for a small fee.
We offer locally sourced food at all aid stations and at the finish.
10 km:
5,5 Kungstorp
22 km:
5,5 km Kungstorp
12 km Gruvans gröna
18 km Sjöskogen
43 km:
5,5 km Kungstorp
12 km Gruvans gröna
21 km Mellsjön
29 km Kovik
37 km Sjöskogen
Post-race food:
All runners are served hot food and cold, alcohol-free Mineral Brewing Recovery Lager at the finish.
Spectators and supporters can purchase food and drinks in the finish area.
All runners have access to the showers and bathroom facilities at Nävekvarn IP
There is several toilets along the course.
To ensure your safety, all participants must carry the following compulsory kit:
- Fully charged phone (with race director’s number saved)
- Windproof jacket
- Thermal base layer
- Hat and gloves
- Water bottle or hydration pack (minimum 500 ml)
- Emergency whistle
- Trail running shoes with good grip
- Survival blanket
- Headlamp if you expect to finish after dark (sunset approx. 16:30).
  Note: trail times can be 50–75% slower than road running.
Bad Weather Kit:
Required if conditions warrant it (confirmed in the race PM 7 days before race day):
- Light down jacket
- Waterproof trousers
- Spare thermal top and leggings
- Extra warm gloves and socks
- Trail shoes with spikes or additional traction aids
- Sörmlands Winter Trail enamel camping mug
- Hand-made wooden finisher’s medal
- Race bib with electronic chip timing
- Aid stations with hot food and hot drinks
- Sörmlands 100 Buff
- Hot food and cold beers at the finish
- Bast Sauna tent, showers and changing facilities at NGIK
Marinans Guesthouse
The closest and has several different options.
To book, send an email to info@marinansguesthouse.se
Lindeborgs Eco Retreat
30 minutes from Nävekvarn, provides climate-positive accommodations with a sauna, yoga space, and natural swimming pond. Prices from SEK 1990.
Registration and Payment Terms
Your registration is binding and will not be refunded, you also agree that your name, start number, age, photos from the race, start time and finish time are published on the internet and possibly other social media platforms. Please note that participation is at your own risk.
Försäkringen Startklar och Startklar Plus
Om du blir sjuk, skadad eller gravid och inte kan delta i loppet kan du som tecknar försäkringen Startklar (155 kr/år) eller Startklar Plus (275 kr/år) få anmälningsavgiften tillbaka. I båda försäkringarna ingår även en olycksfallsförsäkring under resan till/från och under själva loppet. I Startklar Plus gäller också olycksfallsförsäkringen varje gång du tränar under hela året. Försäkringarna är giltiga för alla dina motions- och tävlingsarrangemang i Sverige under försäkringsperioden som är 1 år från och med betaldagen. Läs mer på www.startklar.nu
Namn-, klassbyte eller återbud
Kostnad för namnändring 150kr och är möjligt fram till 8 dagar innan loppet.
As always, participation is at your own risk. Given that this race takes place in the heart of winter, the demands on you as a participant are even higher. It is crucial that you are confident in your ability to face the challenges of a race like this. Ensure you bring the necessary energy and resources for a winter event of this nature, and follow all rules, including having the required equipment. As the event organizers, we do not take responsibility for any personal injuries or damage to equipment.

Race Details:

Course Overview

Race number collection

Aid Stations & Local Food:

Shower & toilets

Compulsory Kit:

What's included:

Accomodation:

Small print:

Participation at Your Own Risk