Nice afternoon for a run so off I go across some footpaths and bridleways. Dodging cows and enjoying the scenery. All was going great until about 8k when my left calf muscle gave out. Had to walk home as I couldn't run for toffee at this point!!. One good thing was that my water bottle waist belt worked a treat. Home now, ice compression sock and foam rolling , ouch ouch ouch ! Hope I'm OK for park run Saturday! Oh well . happy running folks.