The UMFÍ and Krónan Mud Run
Now is the perfect time to dig your dirty clothes out of the wardrobe. The UMFÍ and Krónan mud and obstacle run takes place in Mosfellsbær on Saturday 15 August. In the run, families, knitting clubs, groups of friends and neighbours work together to reach the finish line in the dirtiest run of the year. The event is for the whole family and for individuals. Time does not matter here. A good mood and shared joy are what you need to get through all the obstacles along the way.
The focus is on fun exercise, joy and teamwork.
Key information
- Where: Varmá Sports Centre, Mosfellsbær.
- Date: Saturday 15 August 2026.
- When: 9:30–15:00. Groups start every few minutes.
- Start groups: When you register, you choose a start group with a start time that suits you.
- Course: The course is 3.5 km in total and includes 21 obstacles.
- Start: At the Varmá Sports Centre.
- Finish: At the Varmá Sports Centre.
- Organisers: Ungmennafélagið Afturelding, Krónan and UMFÍ.
Who is the event for?
The event is for the whole family and for individuals. Time does not matter – what matters is getting through all the obstacles along the way. The focus is on fun exercise, joy and teamwork.
How does the event work?
The course is muddy fun and challenging. The loop is 3.5 km long with many obstacles to overcome. Families run together and help each other get through the obstacles or solve the challenges together. Everyone aged 8 and over should be able to complete the course with the help of parents and/or guardians.
Ten participants will be started at 2-minute intervals from 9:30 to 12:00. Participants are assigned a start time when they register.
The start and finish are at the Varmá sports hall, where there will be a party atmosphere from the start of the run until the end. There you can cheer on the participants and enjoy time with family and friends. There will be a special mud course in the area for children under eight.
Can I rinse off after the run?
Yes! There will be a rinsing station on site, and participants get free entry to the Varmá swimming pool.
What does it cost and how do I register?
- Individual registration: ISK 3,900 per person.
- Group of 2: ISK 6,900.
- Group of 3: ISK 8,900.
- Group of 4: ISK 10,900.
- Group of 5: ISK 12,400.
- Group of 6: ISK 13,900.
- And so on – each additional person in a group pays ISK 1,500.
NOTE: The group discount is calculated during checkout! Just add all participants to the basket and the discount is applied before you pay.
Race pack collection
Race packs will be handed out at the Krónan store in Mosfellsbær on Thursday 13 August between 17:00 and 19:00. For those who cannot possibly collect their packs in advance, there will be a station at Varmá before the run where packs can be collected. We encourage everyone to collect their packs in advance to reduce crowding and make the start easier.
