The CNCR - National Soapbox Racing Championship is a national brand of Trilhos do Zêzere, created for the organisation and execution of roller trolley races.

The Aldeias do Xisto Circuit is one of the races that make up this national competition, which promotes an environmentally friendly form of entertainment, promoting contact with the landscape, and cultural and gastronomic heritage. Helping to recover and maintain traditions, while at the same time boosting tourist activity wherever it is held.