Did you know that you can easily support us for the maintenance of this website and the running calculator?
We receive a modest commission from Bol.com if you buy the book The Secret of Running through this affiliate link. We also receive commission from Bol.com if you buy something else but ended up at Bol.com via this button.
For us, every little bit helps and if you are planning to buy something from Bol.com. You help us without costs for yoy.
A thank you from Hans van Dijk and Ron van Megen!