I really hope you’ve managed to catch up on your sleep. I’m leaning towards the slightly threshold based sessions. I don’t want to call them threshold because lack of accurate data is making it hard for the team to perform them properly. But if in unfamiliar territory working to heart rate is an excellent way to do it. Albeit the first km there will be a HR lag so pace is a better metric. But you should find it’s a consistent session without overdoing it. Plenty of stretching and strength work combined with some decent easy miles. Again heart rate for those is the way to go, especially if tired, don’t be afraid to slow down. My last two easy runs, my average pace was different by 30 seconds per km. But the heart rate was the same. Any problems shout. Keep smashing it Chris.

Coach Simon🍊