The Singapore Sports Council runs a chain of affordable sports facilities, often featuring fantastic outdoor 50 meter pools (see Swimming for a list). Facilities are somewhat sparse but the prices are unbeatable, with eg. swimming pools charging $1 for entry and access to ClubFITT gyms only $2.50. The main downside is the inconvenient location of most facilities out in the suburbs, although most are located close to an MRT station and can be reached within 10 or 20 minutes from downtown. The gyms also have a total ban on bringing in any reading material (aimed at students but enforced blindly), although MP3 players are OK.
Major private gym chains include California Fitness, Fitness First and True Fitness. Facilities are better and locations more central, but the prices are also much higher as non-members have to fork out steep day pass fees (around $40).
Some of the parks offer rental of bicycles and inline skates ($3-6/hour, open till 8pm). Especially rewarding for skaters and cyclists is the 10 km long stretch along East Coast Park with a paved track and lots of rental shops, bars and cafes around the McDonalds. There are toilets and showers along the track. Furthermore every park has a couple of fitness stations.