Having just come back from W1 R3, my son asked me about the lengths for next weeks runs.
This reminded me of a very clever post by LouiseW99 who made a spreadsheet detailing the run and walk durations for each week.
I am reposting the link for everyone who may find this helpful:
Click on the link to the original post and follow the instructions to view/download the chart.
Thank you to Louise for making this. I found it a good resource early on in my journey.