Experiments are reported on the ion thermal transport due to the ion‐temperature‐ gradient‐driven instability (ITG mode) and its transport scaling properties with respect to instability parameters like fluctuation leveln˜/niand linear growth rate as well as the drive parameter &eegr;i(=∂ ln[Ti]/∂ ln[ni]) in the Columbia Linear Machine [Phys. Fluids26, 1044 (1983)]. The measured local ion thermal conductivity &khgr;⊥(r) is highly anomalous and strongly correlated with the radial profile of the ITG mode. The linear scaling of the averaged thermal conductivity ⟨&khgr;⊥(r)⟩ with the averaged mode fluctuation level ⟨n˜/ni⟩ and linear growth rate indicates strong turbulence‐type scaling. The scaling of &khgr;⊥with the drive parameter &eegr;iis offset linear.