All winners from the walk will be honoured at an awards night at Wicksteed Park on Friday, March 28.
Prizes are on offer for categories including the craziest hat, largest youth group, largest family team and for the dog wearing the craziest hat.
Charity founder Glennis Hooper, from Wellingborough, said: “A huge thank you to everyone who took part, see you next year.”
And she added: “I feel so very proud and appreciative of the extended Crazy Hats team who all pull together and work tirelessly before and on the day to ensure walkers have a good time.
“We are extremely fortunate to have such a committed and dedicated team in this county who all share the same belief in the charity’s work.”
All the winners will be announced at the event at Wicksteed Park’s Celebration Suite on Friday at 7.30pm.