I'm not a particularly fast cyclist (usually average around 20km/h), but I'm generally in zone 2 for most of my ride and just creeping into zone 3. On the other

I'm not a particularly fast cyclist (usually average around 20km/h), but I'm generally in zone 2 for most of my ride and just creeping into zone 3. On the other hand, being quite fat, I find hills push me much harder than running because I'm forced to go at least 5km/h * because of the gearing of the road bike and having to maintain a cadence of at least 60 (because lower cadence actually makes it harder). Last year, I mostly switched from a road bike to a gravel bike and found the lowest gear far more comfortable for steep hills because the lowest speed was about half. * I actually can't remember the exact speeds, but I think it was about 5mph / 8km/h on the road bike and roughly about 5km/h on the gravel bike.