  We present a measurement of the inclusive jet cross section in ppbar
interactions at sqrt{s}=1.96 TeV using 385 pb^{-1} of data collected with the
CDF II detector at the Fermilab Tevatron. The results are obtained using an
improved cone-based jet algorithm (Midpoint). The data cover the jet transverse
momentum range from 61 to 620 GeV/c, extending the reach by almost 150 GeV/c
compared with previous measurements at the Tevatron. The results are in good
agreement with next-to-leading order perturbative QCD predictions using the
CTEQ6.1M parton distribution functions.
