I cycle on a regular basis for
         health or sport purposes.
 
      I participate in road racing, triathlons and time trials.
                                          I ride longer distances.
       I often cycle in a group.
... if so, then these routes were designed with you in mind.
Mount Faber Loop (Climbing)   directions
Sembawang-Sengkang Loop   directions
Seletar Airbase Loop (Criterium)   directions