Since it appears that there are a couole of other Flamme Rouge players reading this blog, I thought I'd share this nifty little page.
Under Track List there is a huge library of single courses and full tours (with up to 22 stages in some cases). It is just the track layouts for the game - there's not the accompanying 'actual' map or cross-section profile - but it's great to have so much stuff in one place. They are uncredited, but are certainly the work of multiple people, since I recognise some from when they were posted on BGG.
For example, here's the Bretagne Classic-Ouest France 2021 for 4players: