In the present study, single-phase TiC nanotubes and nanorods were synthesized by a novel pressureless spark plasma sintering -SPS- technique using carbon nanotubes -CNTs- and titanium powders at 1050°C for 5 min. Moreover, formation mechanism of the resultant nanomaterials was clarified in detail. X-ray diffraction -XRD-, transmission electron microscopy -TEM-, selected area electron diffraction -SAED- patterns and Raman spectroscopy were conducted to study the microstructure and nature of the produced samples. XRD patterns indicated that all powders reacted to form TiC after applying 1050°C. In addition, according to the TGA results, a significant increment in thermal properties was achieved compared to the pristine CNTs.