Excess adipose tissue may impact the motor performance of youth. Therefore, the current study examined: (1) if adiposity influenced performance in the jump and reach and 30-yard dash; and (2) if maturation predicted motor performance. Participants (N = 267) included girls aged 8 to 16 years. Latent growth curves were used to assess changes in motor performance. Sum of skinfolds predicted jump and reach performance from age 8.5 to 10.5 years, 11.5-12.0 years, 13.0 years, and from age 14 to 14.5 years (b = -0.013 to 0.051, p < 0.05). Sum of skinfolds predicted 30-yard dash performance from age 8.5 to 14.0 years and at age 15.5 years (b = 0.003 to 0.005, p < 0.05). Maturation did not predict performance. Future research should examine determinants that explain the link between adiposity and motor performance.