This is from the wikipedia site on the Hash House Harriers:

An event held annually by some chapters is the “Red Dress Run”. In 1987, Donna Rhinehart was taken to a hash in Long Beach, California, to be introduced to the sport. She was invited to “wait in the truck” until her host returned. Instead Rhinehart joined the hash in her red dress. The following year, the San Diego Hash House Harriers sent Rhinehart an airline ticket to attend the inaugural “Red Dress Run”. Hundreds of hashers wore red dresses for the event which was widely covered by local media. In addressing the crowd, Rhinehart, or “The Lady in Red” as she became known, suggested that such hashes might be held to raise funds for local charities. The event quickly spread around the globe to places such as Beijing, Montreal, Helsinki, Osan/Yangsan Hashers, Moscow, Tokyo, New Orleans,^[10] Washington DC and Hobart in Australia. Over the years, it has raised millions of dollars for charity. The New Orleans Hash House Harriers attracted 7,000 participants to their Red Dress Run in 2010, raising more than $200,000 for 50 local charities.

Today the Red Dress Run is another part of the Hash House Harriers’ heritage. Rhinehart died in 2013 as the Hash House Harriers were celebrating the 25th anniversary of their Red Dress Run.

https://en.wikipedia.org/wiki/Hash_House_Harriers

Our kennel (the proper name for a chapter of the HHH) had not planned a Red Dress Run until later in the year. But when the news spread that Donna Rhinehart had died, we decided to come to our next scheduled run in red dresses (or wear something red) in order to honour her. None of us never knew Donna personally or had met her but she had had an impact on our lives. We toast her every year.

The Ragtag Daily Prompt: Memorial