MTB. Nothing you can ever do on a road bike beats flying down twisty singletrack full speed. And if you think the opposite, then you can’t ride singletrack fast enough 🙂
but I view road cycling as slightly more monotonous in that regard
Slightly?! 😯
They can actually be completely different pursuits, when you think about it. Road riding is kind of like running. You pound out the miles in your own world in that sort of meditative state where you daydream, or you focus on the athelticism, the pain and the speed to get your endorphin high.
MTBing can be like that but it can also be an ‘extreme’ sport – white knuckle singletrack, scary downhills, technical climbs and so on, a test of bike handling, skill and agility. You get endorphins from that and the exercise part too.
Still for me popping over to Cwmcarn is one of my fave rushes because I know it so well I can bury myself up and down to try and shave seconds of my PB.. A great personal challenge that requires fitness and skill.