As a cyclist myself, it's cool to see social media posts of most of the F1 drivers (and many in other series) training regularly on road/mountain bikes. Bottas, for example, is dating a British professional cyclist and they post photos from training rides all the time. It has got me thinking... let's say we have a closed course time trial around a GP circuit on bikes, who on the current F1 grid would win that race? My money is actually on Alonso, he may be one of the oldest drivers but he is also absolutely fanatical about his fitness.
There's a popular cycling channel on YouTube called GCN, they did an episode pitting a former pro cyclist against Tony Kanaan, and Tony (even in his early 40s) is nearly as strong as the cyclist, helps to dispel the myth that drivers are not athletes-