Back to Dragon Hill this morning. Went for it on the first rep and lowered my PB to 4.40. I think there is a bit more to go as I still had enough left to do another 11 reps, none of which was slower than 7 minutes. That also completed the Strava month’s challenge of 7,500m of climbing. Tempted to go and see if I can lower the PB again next week.