Oscar (aged 17) and Robin will be running 100km (in one day ;) along the River Thames, Dollis Brook, The Grand Union and Hertford canals to raise money for the GiveWell Top Charities Fund.

This seeks to improve global health and well-being by supporting the highest-priority funding needs among GiveWell's Top Charities, which are evidence-backed, high-impact, and highly cost-effective opportunities to save and improve the lives of people living in low- and lower-middle-income countries. You can find all the information about the fund here.

You can also find out about the Giving What You can platform here. As they say:

A decade of charity research has revealed something astounding: you can often have 100x more impact by donating to the best charities.

At Giving What We Can, we show you how to find those charities, so you can help solve some of the world’s most pressing problems.

Think you can’t make a difference? We disagree.