Notes
The intervals consisted of a kind of flat section of grass in my normal loop. Started with a slight rise up which I got up to close to full, then held this speed along a short section of flat which led to a slight downhill section that I let accelerate me down, then a last slight rise which I tried to hold speed up and finally a finish straight that I concentrated on slight decel and relaxation. Did one of these ever loop except the 9th loop which was just a slow one.