Sporting events and venues in England are conducting major security reviews following the Manchester Arena attack.
The Great City Games in Manchester takes place on Friday and is an open and free event for the public.
A spokesman for the organisers said: "We are awaiting advice from the authorities on these events and will provide an update as soon as possible."
The FA Cup final, Football League play-offs and the PGA Championship are also this week.
Twenty-two people, including children, were killed and 59 injured when a lone male attacker detonated an improvised explosive device at the Manchester Arena, police have said.