Ed Small, from Penn, took on the run with 40 friends and family members to support the intensive care unit (ICU) at New Cross Hospital.
And he has donations pour in from across the West Midlands and beyond – with people in Doha and Australia helping the cause.
Each runner completed an hour run or walk from their homes, with some people taking on two legs, before passing on the baton to another runner.
Mr Small, a member of the Wolverhampton and Bilston Athletics Club, said: "I am so thankful of them all for what they have done in such a short time.
"I've had friends all round the world as far as Doha and Australia donate, not to mention round the country, and university friends I haven't seen since 1998.
"Everyone has gone above and beyond and I'm still receiving donations and [my] amazing friends are still spreading the word."
The fundraising effort was started on May 15 before the 45-year-old finished the last leg at West Park with his 13-year-old daughter Amelia on May 17.
He added: "I have a good friend who works on ICU at New Cross and wanted to do this for her and her amazing colleagues.
"I feel very proud to have not only done this and raised £3,600 in just nine days.
"I would like to thank all my friends and their friends and families for their efforts and support throughout the event.
"We had money donated from all over the world, from Australia, Indonesia and Qatar."
The 45-year-old also completed another challenge with friend Kevin Thompson set-up by finishing How Hard Can It Be Events' Icing on the Cake route.
It saw them complete a 13 mile run which they planned as a celebration of the fundraising.
To donate, visit https://www.justgiving.com/fundraising/edsmall