Time trialling is a means of bike racing without the worry of riding in a bunch.  Riders are normally set off individually at minute intervals and it is just the rider against the clock.  Normally time trial distances be 10, 25 or 50 miles.  For the purposes of the Sensational cycling event the distance is much shorter but is more technical (lots of twists and turns).  Competitiveness will still be an element on a short course with those trying to set a fastest time.
Also try the hill climb.  With a similar format to a time trial, the riders are set off  individually to set a fastest time up a hill.
We also have a children's circuit for those new to cycling to to improve their skills'