Conquer Ironman – take on 226km with Hawaii hope Tim Don
The science of speed – which kit really makes you faster?
Elite Q&A with Swiss rocket Daniela Ryf
Four training apps on test
Train with Chrissie – we look at techniques for measuring training improvements
Wetsuit buying guide – all you ever needed to know about neoprene
Tri aerobars grouptest
Find 220 Triathlon on sale at newsagents across the UK, and the digital edition can be picked up via the iTunes store, and Zinio.