.Duathlons are raced over sprint distances, such as 2mile/10mile/2mile, short distances, such as 8mile/24mile/ 8mile or much longer distances, a prime example of which is the 10K/150K/30K Zofingen Powerman. The 2008 World Long Distance Duathlon Champion Catriona

groups improved their VO2 max significantly, and reduced their 5K run times by seven per cent (running only) and eight per cent (running and cycling).  These results show that augmenting a running programme with cycling showed no drop in performance over

three of the triathlon sports:• A 1000m-swim at 90 per cent MHR, followed by a 5K cycle or turbo at 90 per cent MHR, followed by a 2K-run at 90 per cent MHR.