Reclaim These Streets had been speaking with the Met Police about how they could proceed with the event but the organisers took the decision to cancel it.
But this did not stop shocked locals flocking to the park, which is located close to where the 33-year-old marketing executive was last seen.
Ms Everard, who lived in Brixton, disappeared on March 3 after walking back from a friend’s home in Clapham.
Wayne Couzens, a serving Met Police officer, has been charged with her murder and kidnap.
The news sent shockwaves through the local community and many looked visibly shaken as they stood by the bandstand.
One woman tweeted: “We went to pay our respects and the whole of the bandstand at Clapham Common is woven through with flowers #saraheverard #reclaimthestreets”
Another Twitter user said: “People are threading their bouquets through the Clapham Common bandstand and already it is making the most beautiful monument to Sarah Everard and to all who knew and loved her.”
On Friday, a High Court judge refused to intervene on behalf of Reclaim These Streets in a legal challenge over the right to protest during lockdown.
The group brought an urgent action in a bid for a declaration that any ban on outdoor gatherings under coronavirus regulations is “subject to the right to protest”, and thus the vigil should be allowed to happen.
Mr Justice Holgate declined to grant the group’s request and also refused to make a declaration that an alleged policy by the force of “prohibiting all protests, irrespective of the specific circumstances” is unlawful.
Reclaim These Streets has encouraged people to join a doorstep vigil at 9.30pm, with the group saying it would be joining people across the country and “shining a light, a candle, a torch, a phone, to remember Sarah Everard and all the women affected by and lost to violence”.
There will also be a live event on YouTube at 6pm.
Ms Everard is thought to have walked through Clapham Common towards her house in Brixton – a journey which should have taken around 50 minutes.
Couzens appeared at Westminster Magistrates’ Court on Saturday morning following his arrest on Tuesday.
Chief Magistrate Paul Goldspring remanded Couzens in custody to appear at the Old Bailey on March 16.
Ms Everard’s family paid tribute to her on Thursday describing her as “bright and beautiful” and “kind and strong” as they appealed for anyone with information to help detectives.
“She was kind and thoughtful, caring and dependable. She always put others first and had the most amazing sense of humour,” the said.
“She was strong and principled and a shining example to us all. We are very proud of her and she brought so much joy to our lives.”