Nikki succeeded in losing more than three stone, initially through a sponsored diet and then by being sponsored to do 10K and half marathon races.
The FitTastic challenge is raising money for the Blind Veterans charity. It started on September 11 and ends on November 6.
Taking part are Waitrose shop assistant Jen Smith, 31 and mums Sarah Mepham, 36, personal care assistant; Nicky Conticell, 40, catering
co-ordinator at Warden Park Primary school and Jennie Samarasinghe, 43,
Operations Director of a Healthcare company. All live in Burgess Hill.