To date Penny Comins has completed 14 Ironman’s, over 30 marathons and an ultra. Now she prepares for one of the top 10 toughest endurance races in the world - O till O
Race preview: Penny Comins is in Berlin for the 39th BMW Berlin Marathon - September 30, 2012. Because big city marathons are not just about the elite, she reports of her own experiences in the build up to the big race