  The PASSAGES ($Planck$ All-Sky Survey to Analyze Gravitationally-lensed
Extreme Starbursts) collaboration has recently defined a sample of 30
gravitationally-lensed dusty star-forming galaxies (DSFGs). These rare,
submillimeter-selected objects enable high-resolution views of the most extreme
sites of star formation in galaxies at Cosmic Noon. Here, we present the first
major compilation of strong lensing analyses using LENSTOOL for PASSAGES,
including 15 objects spanning $z=1.1-3.3$, using complementary information from
$0.6^{\prime\prime}$-resolution 1 mm Atacama Large Millimeter/submillimeter
Array (ALMA) and $0.4^{\prime\prime}$ 5 cm Jansky Very Large Array continuum
imaging, in tandem with 1.6$\mu$m $Hubble$ and optical imaging with Gemini-S.
Magnifications range from $\mu = 2 - 28$ (median $\mu=7$), yielding intrinsic
infrared luminosities of $L_{\rm IR} = 0.2 - 5.9 \times 10^{13}~L_\odot$
(median ${1.4}\times 10^{13}~L_\odot$) and inferred star formation rates of
$170-6300~M_\odot~{\rm yr}^{-1}$ (median $1500~M_\odot~{\rm yr}^{-1}$). These
results suggest that the PASSAGES objects comprise some of the most extreme
known starbursts, rivaling the luminosities of even the brightest unlensed
objects, further amplified by lensing. The intrinsic sizes of far-infrared
continuum regions are large ($R_{\rm e} = {1.7 - 4.3}$ kpc; median $3.0$ kpc)
but consistent with $L_{\rm IR}-R_{\rm e}$ scaling relations for $z>1$ DSFGs,
suggesting a widespread spatial distribution of star formation. With
modestly-high angular resolution, we explore if these objects might be maximal
starbursts. Instead of approaching Eddington-limited surface densities, above
which radiation pressure will disrupt further star formation, they are safely
sub-Eddington -- at least on global, galaxy-integrated scales.
