Hello Hina!
Its good to hear tht yu are on a great path. Your post caught my attention because im not relly a runner, but im signed up for the Chicago Tough Mudder in May as well! I am currently 40lbs overweight and am using c210k to get in the best shape possible for the race. Im currently in week 3 day 1 of this app. Maybe we can help each ther achieve our ultimate goal!