I did this one yesterday and I found it a bit tougher than expected, it was very warm mind. I think Week 5 run 3 is a bit of a false dawn! You run for twenty minutes, think you're a world beater then in week 6 you realise there is still plenty of work to be done. Still I am very pleased with how far I have managed to come in 6 short weeks.
I've got the 25 minute marathon to come tomorrow, might have a change of scenery for that one....