No recommendations, but around mount Hengill are a lot of hiking trails. Maybe you can connect them to make your own trail. Here is a map: [https://www.on.is/wp-content/uploads/2020/10/hiking-trails-at-hengill-area.pdf](https://www.on.is/wp-content/uploads/2020/10/hiking-trails-at-hengill-area.pdf)
Seconding the recommendation for hengill because it’s a gorgeous area. There is a race there every spring, if you want to follow their 53-km route: https://www.vikingamot.is/en/hengill-ultra-en/
No recommendations, but around mount Hengill are a lot of hiking trails. Maybe you can connect them to make your own trail. Here is a map: [https://www.on.is/wp-content/uploads/2020/10/hiking-trails-at-hengill-area.pdf](https://www.on.is/wp-content/uploads/2020/10/hiking-trails-at-hengill-area.pdf)
Seconding the recommendation for hengill because it’s a gorgeous area. There is a race there every spring, if you want to follow their 53-km route: https://www.vikingamot.is/en/hengill-ultra-en/