This study examines the effects of long-term training program on balance and center of pressure (COP) for four male children (13 years of age) with cerebral palsy (CP). These children were classified into one hemiplegic (level II), one diplegic (level II) and two quadriplegic children (levels III and II) using the Gross Motor Function Classification System. Balance measurements (static balance: double leg and dynamic balance: single leg) were evaluated with a force platform for 30 s. In addition, Berg Balance Scale, Modified Ashworth Scale, maximum handgrip strength, modified apley test, body composition measurements were performed for all the subjects. The intervention corresponded to at least three sessions per week as a mixed training regimen for 7 months. All evaluations were repeated 3 times: One prior to the start of the training; the second one after 16 weeks and the third one after 28 weeks. Mixed training program improved performances for all the measured parameters. The greatest static balance improvement was observed in one quadriplegic child (level III) and 5 years old hemiplegia was able to stand unaffected after training. We suggest that children with CP will benefit from long-term mixed training program.