Going on to week 4 with a lot of trepidation , deliberately didn't look to see how far the runs would be as I was afraid I would psyche myself out. Woke to a rainy morning so decided to do it on the treadmill, took it really slow 5.4 km walking and 6.4 km 'runs' (still find it hard calling what I do run!) and found it surprisingly easy. Pleased that it felt so good but eternal worrier that I am concerned that outside on the hilly route won't be. Thanks everyone for all the advice so far - love this forum!!