About 700 people took part in this year’s Walk Ten event at Althorp House.
It is thought the walkers have raised a total of about £46,000 for Marie Curie Cancer Care.
Charity spokesman Carrie Seaton said: “It was a wonderful occasion, the rain didn’t stay away, but there was still a fantastic atmosphere among the people out on route.
“And the mood at the end of the evening was fantastic with participants sitting around their picnics listening to the live music and taking in the occasion.
“We were very lucky to have fantastic support from our amazing volunteers, we wouldn’t have been able to put the event on without them.”
The walk took part in Althorp’s 550-acre parkland on Saturday and was held to fund the care of people with terminal illnesses and provide vital support for their families.