The Tour de Broads Sportive takes place on Sunday 18th August. http://www.tourdebroads.com/
The Shouldham Beer Festival runs from 30th August 5pm to 1st September 7pm. https://kingsarmsshouldham.co.uk/events/beer-cider-gin-music-festival-2019/
Several Regional Audaxes:
Sat 20 July Bildeston, Suffolk 100/160/200k.
Sat 24 August Mildenhall Cycling Festival 52/100/160/200/300k
Sat 21 September Carbrooke Watton 100/200k
Sat 28 September Suffolk Byways 117k http://www.aukweb.net/events/detail/19-105/