My first impressions were that it's pretty good:
- The website feels very responsive.
- It's easy to tweak the route by dragging it to add a waypoint (One of the flaws with a similar website, cyclestreets.net)
- The 'suggested cycle rides from a given location' is a nice idea, although none of the rides it suggests for me are circular.
- It appears that routing is done using OSRM, with OpenStreetMap data. This is great, as I find it generally has excellent coverage, especially of cycle facilities. However, if you do find an issue which causes odd routes, you can fix it yourself! (An occasional problem is a cyclepath or footpath that ends next to a road, but the cyclepath and road aren't explicitly linked in the OSM data. It needs someone who knows the place to link them up, otherwise the route finder doesn't know that you can get from one to the other).
- It's nice that the route finder considers the possibility of pushing the bike along a short section of footpath; I have known other routing websites to go an extremely long way round because their routing rules ignored footpaths completely.
- The elevation plot is nice.