Hi Anne,
Following the description of each day in the itinerary of an active holiday, the duration of walking is stated.
However, if you look under 'Welfare, Health & Safety' in the Essential Information section of your JY brochure, guidance about the level of walking is mentioned:
'Tours described as 'Active' are not suitable for anyone with any limited or mobility issues'.
I hope this helps you.
Kind Regards,
Amy