Most 'TriVets' rides operate on a lead group system, with arranged stops. They are held every three years for veteran riders, ie over 50s. Usually a relaxed ride, with speeds held down to suit the refreshments stops, particularly when organised by, eg Brentwood (Essex), which uses the same hall for all groups and all stops, so that each group has a specific time for refreshments! As they are intended for older riders, a 12 hour limit applies. On various rides I have done, the oldest rider has been up to 87 years old. Usually the eldest group goes first, the youngest last, finishing for the tea and certificates at the end at 8pm, after an 8+am start. Good fun, and enjoyable.