You are a practiced cyclist and are looking for an tough training challenge? We can offer you three great - and very hilly - alternatives. The Heuvelland Hill Route will take you up and down 40 hills over a distance of 116 kilometres. You can also split the route into two smaller circuits: the 40/434 and
the 60/880. The first has 434 metres of climbing over a distance of 40 kilometres; the second has an altitude difference of 880 metres over 60 kilometres.
The Hill Route can be downloaded for free via Verken heuvelland hellingenroute official | AllTrails

https://cyclinginflanders.cc/routes

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