They completed the challenge on Saturday, in aid of the unit in Southampton Hospital, which cared for one of their grandchildren.
Sharon Ross, Katrina Turnball, Donna Ashman, Susanne Ross, Carolin Nunn-Hammond, and Natalie Sumner were dressed as babies to tackle the course at Rookery Fit Farm in Bognor Regis.
Their efforts were inspired by Sharon Ross’ grand-daughter, Vienna,
Vienna was born two months premature in May, 2020, with a congenital condition called Gastroschisis, which required surgery.
She was treated at Southampton’s Princess Anne Hospital in the neonatal unit and stayed there for a month until she was well enough to return home.
With an initial aim of raising just £500, the women raised more than ten times their target.
Darcey Wadey, 29, from Littlehampton, is Vienna’s mother. She said: “I didn’t take part in the assault course, it was just my mum and her friends, but they did so well and it went great.
“It looked brutal, but they all managed to complete it.
“They really enjoyed the assault course but they were so tired after and definitely all aching now.
“I felt emotional watching them, but I am so grateful that they were able to give something back.”