Hello. I am planning to start the 160km plus gran fondo bike plan level 2. My event is single day 160km on a hilly course. I was planning to substitute the 3 weekly foundation rides on wed/thur/sat to Zone2 runs of same duration plus strides on one or two of the days. I have been mixing cycling and running for the past three years consistently. Thank you for the great resourses and plans. I have followed the olympic triathlon and 10k run plans from the books to really great results!
Thank you and Best Regards,