The Peak is part of a £27.3m development currentlky being built in Stirling, Scotland
The agency's Glasgow team has been hired by Active Stirling, a division of Stirling Council, to promote the complex and the Stirling Sports Village Project as a whole.
The agency will also work on the official opening of The Peak in April.
Stirling hopes to attract athletes to train in the area ahead of the London Olympics in 2012 and the Glasgow Commonwealth Games in 2014.
The development includes a nine-court sports hall, a 25m swimming pool, a climbing wall and a six-sheet ice pad, football pitches and a water-based hockey pitch.
Weber Shandwick has offices in Aberdeen, Edinburgh, Glasgow and Inverness and employs 55 staff in Scotland.