  We study the temperature dependence of electrical resistivity for currents
directed along all crystallographic axes of the spin-triplet superconductor
UTe$_{2}$. We focus particularly on an accurate determination of the
resistivity along the $c$-axis ($\rho_c$) by using a generalized Montgomery
technique that allows extraction of crystallographic resistivity components
from a single sample. In contrast to expectations from the observed highly
anisotropic band structure, our measurement of the absolute values of
resistivities in all current directions reveals a surprisingly nearly isotropic
transport behavior at temperatures above Kondo coherence, with $\rho_c \sim
\rho_b \sim 2\rho_a$, that evolves to reveal qualitatively distinct behaviors
on cooling. The temperature dependence of $\rho_c$ exhibits a peak at a
temperature much lower than the onset of Kondo coherence observed in $\rho_a$
and $\rho_b$, consistent with features in magnetotransport and magnetization
that point to a magnetic origin. A comparison to the temperature-dependent
evolution of the scattering rate observed in angle-resolved photoemission
spectroscopy experiments provides important insights into the underlying
electronic structure necessary for building a microscopic model of
superconductivity in UTe$_{2}$.
