On Sunday, regular morning services will be held at St Giles' Cathedral and Greyfriars Tolbooth, and a free public event showcasing the "best of the Church of Scotland" is to start at 1300 BST in Edinburgh's Princes Street Gardens.
Malcolm, whose 20.08 secs personal best at the 2001 Worlds in Edmonton, starts his 200m European quest at 1030 BST on Thursday hoping to go better than his 2002 performance in Munich.