Thats good. Week 5 is crucial. Last day would seem very tough but its possible when you do it and its a good confidence booster. The key is not to take breaks in the program. If any day cannot be done, it should be repeated. I had many previous attempts where i stopped the program. This time i was determined not to skip and hence completed it. Now am working on completing 5k in 40 mins and then in 30 mins before switching over to a bigger plan. Reducing 35lbs over 6 months is awesome. How much do you cycle and at what speed ? I also do cross train with cycling for about 25kms with avg speed of 18-20kmph.