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The Downward Spiral

Try it for free in the app

An essential workout for developing tremendous speed, power and recovery, this is a 56-minute structured interval workout with 16+ flat-out power intervals. Just watch out for the Sufferlandrian Pain Suckers (55 min).


Try the sufferfest for free

One subscription works across Windows, Mac, iPad and iPhone devices. Try it for free for 7 days. Cancel easily at any time. If you continue, it’s just $10 USD/month or $99 USD/year.

That's it. No games. Just getting faster.

TRY THE SUFFERFEST FOR FREE