Quote Originally Posted by Nigel View Post
Absolutely. I've got a pair of 'featherlight' 320's which feel like bricks, now. 220's and x-talons is the way. Could do with something this light with a mudclaw sole, though, Mr innov8.

The problem I'm finding with my vibrams is that if I go more than about 6 miles my calfs seize up as though I've been doing calf raises in the gym with heavy weights and gone too far. Does it ease off? Do you just run though it?
Im not sure you actually need a Mudclaw soled version...try the X-Talon and see how well that performs

Your calves may well be stiff, you need to massage & stretch.
Its worth having a look HERE and talking to THIS man