Dennis Peche is among the CrossFit Rising Oak athletes taking part in the annual CRO 6-Hour Enduro Charity Event in support of Rainbows and Smiles. Photo: Eric Barnfather CrossFit Rising Oak (CRO) has raised more than R40 000 for Rainbows and Smiles through its annual CRO 6-Hour Enduro Charity Event. The CrossFit gym united athletes, families, sponsors, and supporters for a day defined by endurance, teamwork, and purpose.