Hill climb intervals are probably my favourite type of training. I generally do some kind of hill climb intervals from February to the end of the hill climb season in October. At this time of the year (spring), my 5 minute power is well down because I spend most of the winter focusing on endurance. Even I feel like a break from hill climb intervals in Nov, Dec and Jan. Because I’m starting from a relatively low base, it means that even a few hill climb intervals can see a big improvement in power output.
See also: Techniques of riding uphill
Early Hill Climb sessions
During the early part of the hill climb season, I’m getting used to riding at or above race pace. A typical session might involve:
- Warm up for 15 minutes
- 3 * 1 minute intervals at 95% – this is about 400 watts. They are not completely ‘eyeballs out’ I like to break myself in a bit more gently.
- 7 * 4 – 5 minutes. To make it more interesting, I do intervals up real hills. The hill climb may last between 3 and a half minutes and 5 minutes, depending on where I’m training. I do the first one really hard, but not 100% as if I was doing a hill climb.
I’m most interested in maintaining high power towards the end of interval and towards the end of the interval session. A good indicator of form is how I go during the 6th or 7th interval. In that sense the intervals get harder as you progress towards the end because the muscles are tired and you are carrying around more lactic acid.
If my FTP is 290, I might be doing these intervals at 350 watts. – Or 20% harder than an effort during an hour’s constant time trial.
In between these intervals I ride at a recovery pace. Gently spinning to try and get rid of the lactic acid.
In a typical interval session, it might take 2 and half hours and take 50 miles.
At this time of the year, I might just do one a week. In peak hill climb training season, perhaps two. Generally, I need an easy day before and after to get the most from them. To be honest, if I really do a proper hill climb interval session, you don’t feel like doing anything other than a recovery ride the next day.
After the interval session, I recommend some stretching especially of hamstrings.
Aim of hill climb intervals
- Increase climbing ability
- By racing above your normal race pace, you hope to stress the muscles and heart to pull up your capacity. The main aim for time trialling is to increase your Functional Threshold power (FTP) – roughly the effort / power you can maintain for an effort of an hour. Intervals can do this
- One way to train for an hour time trial is to train for an hour and see how fast you can do it. Intervals are deliberately training for a shorter time so you can ride at a level higher than what you can maintain for a long time.
- Train different muscle fibres. In road races and even short distance time trials (25 miles), you will be using all three muscle fibres – slow twitch, fast twitch and super-fast twitch. Hill climb intervals are a way to train all three. You don’t get this training effect, just by riding hard for an hour.
- Get used to dealing with lactic acid.
- My main early season target is several hilly time trials. These interval sessions replicate hilly time trials quite well. The only difference is that I’m not racing in between hills – only when going up the hills.
Riding the hill climb intervals
Now I have a power meter I do spend a bit of time looking at the power meter to try and gauge effort and smooth over the effort during a climb. This generally involves, holding back a little at the bottom, but then making an even bigger effort towards the end of the interval to maintain the power. I think a power meter is useful in the sense it shows what you are actually putting out. I didn’t realise how easy it is for power to peter out, when the slope eases off at the top.