Welsh winger, George North, is visiting the children's cancer ward in Wales for the first time since becoming ambassador for LATCH earlier this year.
The 19-year-old will meet the children there and also donate a signed Welsh rugby shirt to the charity.
North was announced as the ambassador at the charity's 30th birthday, but he couldn't attend due to his rugby commitments.
LATCH supports children with leukaemia and their families in Wales.
More top news
Medication designed for animals was taken from the building in Abertillery on Thursday night.
More than a thousand riders will be taking part in a series of events in and around the town.
Some warm spells of sunshine will develop, although scattered heavy and thundery showers are also expected during the afternoon.