Louis, aged 14, from Tettenhall Wood, has already raised £12,500 through walking challenges and cycling around his local area to take part in the London Virtual Marathon during lockdown.
His mother, Teresa said: “Louis suffers from Pectus Excavatum, the collapse of his rib-cage, and becomes breathless.
"Since February last year the NHS has stopped funding the operation he needs, but he is determined to continue fundraising for the hospital where two of his friends were treated for cancer but sadly lost their lives.
“I am obviously very proud of Louis and he walked from Tettenhall to the hospital two years ago but last year it was cancelled because of lockdown.
"He is determined that he is definitely going to complete his walk again this year.
“He is hoping to raise another £300 as every penny counts for the hospital.”