Cumbria Police are advising motorists to allow extra time and follow the correct road signs when travelling to Elton John's concert this evening.
The singer is performing at this year's Westmorland County Show and thousands of tickets have been sold.
Traffic signs will take those travelling from the south along the A6 to Milnthorpe, and right at the crossroads.
Police say for those coming from the north, the best route is to turn off the Brettargh Holt roundabout and head to Milnthorpe, turning left at the crossroads in the centre of the town.
The traffic lights at the crossroads will be manually operated to ease traffic.
The 214th Westmorland County show gets underway at Lane Farm in Kendal today and around 30,000 visitors are expected.
Her Royal Highness The Countess of Wessex is visiting the show, which is one of the largest and oldest in Cumbria.
Sections include cattle, sheep, goats, horses, pigs, heavy horses, alpacas, dogs and poultry, as well as marquees for The Women's Institute, Learning for Life, Crafts from Cumbria, local produce Food Hall, Rural Crafts and over 350 trade stands.
Despite the wet weather the region has entailed recently, Westmorland County Show is going ahead.
Founded in 1799 and now in it's 213th year, the show is one of the largest and oldest one-day shows in the country.
The main attraction is the livestock competitions, with sections including cattle, sheep, goats, horses, pigs and poultry.
There's also marquees for The Women's Institute, Learning for Life, Crafts from Cumbria, as well as a local produce food hall and over 350 trade stands.
South Lakes MP Tim Farron is launching a "Fair Deal for Dairy Farmers" campaign at this years show.
He'll be asking residents to support his campaign with the NFU to secure the long term future of the dairy industry.
The show is based at Lane Farm, Crooklands near Kendal and gates open at 8am.