Cyclocross (also cyclo-cross, ‘cross or cx) is my favourite discipline of riding bikes. In its contemporary form you ride your bike around in a field and sometimes have to get off your bike and carry it because the hills are too steep or there are stairs or someone put a bunch of boards across the track. I often think of it as the least efficient way of using your bike. It’s awesome.
I’m working on a longish cx explainer.
Further reading of my personal responses with cyclocross can be found under the cx tag or check out my season summaries: