Having done tonight’s 10k session this morning, I suggest you split the repetitions so you get a break in between. I would do 8 and then have a two or three minutes recovery. Perhaps all come back to the start point. Then have a go at another 7 (maximum). It’s a tough session and no disgrace if you don’t complete the 15! Let me know how it goes.
For the next two Thursdays (21st & 28th March) we will do a mixture of relays, paalauf, fartlek…a more varied and fun session.
I will put together another 8 week programme which will run 4th April until 23rd May. Hopefully you can fit this around any races you plan to do.