We have various routes around the area we can recommend so just let us know the length and type of cycle you would like to do.
Here are a few links to websites that may be of interest to you while planning your stay:
Great Glen Way - http://www.greatglenway.org/
Enjoy Loch Ness - http://enjoylochness.com/
South Loch Ness - https://www.visitinvernesslochness.com/
Orbea Bikes - https://www.orbea.com/gb-en/