The Hills have Bikes is a fully self-supported bike packing race across Germany that starts and finishes at de Proloog cafe in Amerongen. 60% of the route is off-road, with a mix of gravel, sand, rocks, roots, single trails. The THHB has two categories – solo and pair.
At least a gravel bike with 42mm tires is recommended.
Register: https://www.adventurebikeracing.com/register-event/