Luuk, 16, Mees, 15, and Cas, 16, students at Maurick College in Vught, planned to cycle almost 500 kilometers from Saint-Jan to Paris on Thursday to raise money for KWF. Luuk’s grandfather is undergoing treatment for cancer for the second time.

The students chose the cycling trip for a profile assignment instead of standard research. Luuk said he thinks about his grandfather when the journey becomes difficult.