As njee says, it’s not easy:
Swains Lane – as recommended by Alex Blomeley
In short : Swains Lane is arguably the most famous climb in London. Nestled in-between Hampstead Heath and Highgate Cemetery, it’s an iconic spot for training. At the bottom are a handful of lovely cafés and as a reward at the top The Flask always has a fine selection of brews.
An average of 9pc over 0.6km means it’s not the longest hill in the land, but it definitely has a sting in its tail. The hill starts deceptively, with a gradual increases up to about 9pc, before a brief respite as you pass the entrance to the cemetery. It then rears up to its full 14% for 40 meters or so, before rolling off at the top.
Thirsty work.
What makes it tough? 14pc is pretty tough; you’ll want to be out of the saddle to power up an include like that. For me though, I would say the toughest part is just after the steepest section as it takes a lot longer than you might think to get back to flat. If you’ve dug too deep to get over the 14pc quickly this last bit is really going to burn.
How can I get to the top? A steady effort up the first section to get your heart rate going as you reach the cemetery entrance. A little spin of the legs, then refocus as you prepare for the main effort. Take some speed into the climb and then get out of the saddle. Try not to lean too far forward on the bike as when wet you’ll find your back wheel slipping at this gradient. If you can, ride just within your maximum effort so you can finish strong across the top.
What’s a good time? For this short climb section I’m currently 17th on Strava with a time of 1:56. I’d say that under 3.00 is good, sub 2:30 is very good and under 2 mins will put you in the top 25 (of 4700) on Strava.