Nedd Brockmann has set himself what some see as an impossible challenge, running 4000km from Cottesloe Beach to Bondi Beach.

Determined to achieve the fastest known time in 40 consecutive days, the Sydney tradie also hopes to raise awareness for a good cause along the way, the We Are Mobilise homeless charity which does outreach programs on the street and provide food and hygiene packs to those sleeping rough.

Brockmann hopes to reach a goal of $1 million towards the charity and anticipations the more momentum the run attracts the more money they can raise.

“All the training has been done – it’s time to get running” he told 6PR Breakfast host Gareth Parker.