I don't know how she did it!

Maths for fun group today and our 'teacher' has completed a 100km night time charity ride in London on this bike with 3 gears. It took her 8 hours - she confessed she invested in some padded shorts to make it more comfortable!
We 'played' with coloured bits of wood in different lengths. We all behave like little kids, so it was very apt!