Repairs of the access road to Stanton Country Park have begun.
The project includes rebuilding and resurfacing the length of the road and improving verges.
The work is likely to take four weeks, and the council has warned that although pedestrian access to the park will be maintained there will be restrictions on vehicles using the road at times during the work.
Visitors to the park are encouraged to park at Stanton House Hotel, which the council revealed had made its car park available.
Councillor Dale Heenan, Swindon Borough Council’s Cabinet Member responsible for the Town Centre, Heritage and Culture, said: “Stanton is a beautiful park, with a mix of woodland, lake and field walks.
"It is Swindon’s most dog-friendly park, with several fields fenced off to allow dogs off the lead when sheep aren't grazing.
“I visit the park regularly with my dog, Juno, and as most people who visit will know, the access road is tortuous and leaves a lot to be desired."
Coun Heenan promised that once the work was complete there would be no more potholes, no waiting on gravel and a fit-for-purpose road that would be used for decades to come.
He added: “As Cabinet Member responsible for our country parks, I have pushed for Swindon's first ever four-year Park Improvement Plan to demonstrate our commitment.
"I have already highlighted plans to invest more than £1m in Coate Water and Lydiard but we must not forget other parks like Stanton and Mouldon Hill.
"Sorting this road was the obvious immediate priority for Stanton, with Cllr Maureen Penny also very supportive, and there will be more news about park investment soon.
“We are really lucky to have some fantastic parks in Swindon and we must keep investing in them so local people and visitors continue to enjoy them."