Hill repeats occupy a polarised place in training culture: some riders build seasons around them, others avoid climbs entirely. For some, it is the only way to get the necessary intensity without a track. For others, it is just random suffering that lacks a clear purpose in a session design.
There is a tendency to treat climbing as a magic bullet for fitness, but high intensity intervals only work if they serve a specific goal. Without a plan, you are just grinding a gear for the sake of a number on a screen.
Does your preference for or against hill repeats come down to the terrain you have available, or a specific training philosophy?
The focus on hill repeats is less about the terrain and more about managing the power to weight ratio. It is easy to fall into the trap of grinding a heavy gear, but that just leads to burning out. The real goal should be shifting the philosophy toward spinning a higher cadence. Preserving the leg muscles through a higher turnover makes the climb a sustainable effort rather than just random suffering, which helps in seeing actual fitness gains over several months of consistent work.
Spinning a higher cadence helps with sustainability, but that is not the only goal of hill work. If the purpose is a short, high-intensity effort to raise the ceiling, then grinding a gear is often the reality of the effort. Sustainability is for the long haul; targeted intervals are about the specific physiological stress you are chasing. If the session design is just to avoid burnout, it is a different goal than pushing close to max effort for a few minutes.
Pushing for that ceiling requires more than just effort; it needs a precise anchor. A structured MAP ramp test provides the clear insight into the aerobic ceiling necessary to set those high-intensity targets. Without using a power meter to track specific wattage benchmarks, it is difficult to tell if a session is actually driving physiological gains or just causing fatigue. Grinding through steady threshold blocks at precise wattage builds race endurance far faster than unfocused efforts. The key is ensuring the interval design targets a specific percentage of that MAP to ensure the stress is productive rather than random.
