The Nop Phra Len Phleng Fair is held during the celebrations of Makha Bucha (around February). A tradition since the times of Sukhothai, it is described in the inscription stone found at Nakhon Chum of how processions were organised to pay homage to the town's major religious sites. The fair today consists of colorfully decorated parades of participants dressed in ancient attires crossing the Ping to pay homage to the Holy Relic on the Nakhon Chum side of the river.