# Jens Jakob Andersen

Jens Jakob Andersen is a former competitive runner focussing on 5K races and cross country races. His personal best is 5K in 15:58 minutes. Besides running, he's the founder of RUNREPEAT.COM, a website that helps runners find the right running shoes.

### Articles by Jens Jakob Andersen

[Ten Running Benefits You Feel Within a Week](https://runkeeper.com/ja/start-running/10-running-benefits-you-feel-within-a-week/)

While some of these may take time to take shape, others you will notice right away.

[A Scientific Look at Which Running Surface is the Best](https://runkeeper.com/ja/health/a-super-scientific-look-at-which-running-surface-is-the-best/)

Let’s look at what the science says about the surface you run on and how it may impact your body.

[My Journey to the Boston Marathon](https://runkeeper.com/ja/stories/my-journey-to-the-boston-marathon/)

I wasn’t planning on running the Boston Marathon this year. As the CEO of a scaling startup and the father […]