Ostergaard and 10 colleagues from the maritime procurement platform climbed a total of 1,558 metres in traversing more than 37 kilometres (23 miles) of Pen-y-ghent, Whernside and Ingleborough.
Stuart May, David Hardy, James Simpson, Attila Olbrich, Attila Nemeth, Elvir Leonard, Nehal Patel, Mark Warner, Robin Sinclair and Rayana Choudhary were the others taking part in the one-day challenge.
Heart Research UK spends its funds primarily on medical research into the prevention, treatment and cure of heart disease.