After a rainy period a lot of water and mud make it tough. Besides that quite heavy as the terrain is never flat. You always go up or down, with sometimes short but steep climbes. Actually it consists out of two separate routes (so called green and red routes) which are connected at some points, so they can be followed as one loop. The route can be followed by following the green and red arrows along the route.
More info and a map can be found at:
How to get there:
From Nijmegen drive South towards Malden. As Malden is not that big the easiest point to start at is the McDonalds restaurant (just North of Malden and South of Nijmegen).