Extent of disease:\r\n* Patients with non-metastatic and metastatic disease are eligible\r\n* Initially unresectable patients, with or without metastatic disease, are eligible as long as there is a commitment at enrollment to resect the primary tumor Patients with more than discrete locations of extra-cranial metastatic disease after first-line systemic therapy requiring more than radiation/surgery plans to cover these distinct metastatic disease entities. Have a history of an invasive metastatic disease, except for the following: Individuals with a history of invasive metastatic disease are eligible if they have been disease free for at least years and are deemed by the Investigator to be at low risk for recurrence of that metastatic disease; Known spinal cord compromise or instrumentation due to metastatic disease. Radiation therapy for metastatic disease is allowed. Metastatic CRPC Known metastatic disease Any patient with metastatic disease. Patient does not have metastatic disease Confirmed metastatic disease PHASE IB: =< lines of prior systemic therapy for metastatic disease (if patients have metastatic disease) Has at least identified sites of metastatic disease by imaging. Diagnosis of metastatic disease Presence of metastatic disease Known metastatic disease Metastatic disease Prior radiation treatment for metastatic disease For patients with metastatic disease: N M disease Known metastatic disease Any metastatic disease Widely metastatic disease (oligometastatic disease acceptable) Metastatic disease. Patients may have received one prior hormonal treatment for metastatic disease Metastatic disease or local-regional disease that is considered not resectable for cure Has metastatic disease Patients with more than >= metastatic lung lesions or any one lesion greater than cm and/or extensive metastatic disease outside the chest Patient has had at least one prior systemic therapy for metastatic disease Has metastatic disease Metastatic Metastatic disease Patients must not have known metastatic disease Patients with metastatic disease will not be excluded Patients with metastatic disease The subject has metastatic disease at the time of screening No metastatic disease (M) Patients must have received at least one prior therapy for metastatic disease to be eligible Patients with histologically confirmed metastatic melanoma, metastatic non-small cell lung cancer, metastatic breast cancer, or metastatic pancreatic adenocarcinoma relapsed or refractory to therapy as outlined below or patients with these malignancies who have declined, are or have become unable to tolerate (e.g. progressive chemotherapy-associated peripheral neuropathy), or were not eligible for standard therapy\r\n* Metastatic melanoma patients at any line of therapy\r\n* Metastatic non-small cell lung cancer patients who have relapsed or are refractory to at least one line of systemic anti-cancer therapy for metastatic disease, including cytotoxic chemotherapy or targeted therapy\r\n* Metastatic breast cancer patients who have relapsed or are refractory to at least one line of systemic anti-cancer therapy for metastatic disease, such as cytotoxic chemotherapy, hormonal therapy, or targeted therapy\r\n* Metastatic pancreatic adenocarcinoma who have relapsed or are refractory to at least one line of systemic anti-cancer therapy for metastatic disease, such as cytotoxic chemotherapy or targeted therapy Presence of metastatic disease on scans Known metastatic disease Known metastatic disease Presence of metastatic disease Known metastatic disease Multi-focal or metastatic disease Known metastatic disease Metastatic disease on pretreatment imaging There must be documentation that the patient has evidence of measurable metastatic breast cancer. Histologic confirmation of metastatic disease is not required. Known metastatic disease Metastatic disease History, presence, or suspicion of metastatic disease Patients with metastatic disease Metastatic disease Presence of metastatic disease No prior chemotherapy for metastatic disease Histological or cytological diagnosis of metastatic CRC excluding known microsatellite instable sub-types, metastatic SCCHN or metastatic NSCLC that have progressed or have become intolerant to standard therapy, and whose disease may allow management with other available therapies Metastatic disease Patients with Gilbert's disease or known CNS metastatic disease. Patients with metastatic disease limited to the CNS Metastatic disease Metastatic disease or non-testicular primary Have received at least one prior therapy for metastatic disease Presence of distant metastatic disease or disease not amenable to radiation treatment Presence of metastatic disease Diagnosis of metastatic disease Patients with metastatic disease No more than two prior therapies for metastatic disease Patients must have metastatic disease Patient has known nodal or distant metastatic disease; patients with nodal or metastatic disease require systemic chemotherapy; furthermore, they should be excluded from this clinical trial because of their poor overall prognosis Patients with metastatic disease must have received at least one line of standard of care (SOC) treatment for metastatic disease prior to enrollment Received prior trastuzumab or chemotherapy for metastatic breast cancer except if patient has CNS as only site of metastatic disease History of metastatic disease at any time or presence of detectable metastases. Metastatic disease involving bone with metastatic disease previously confirmed by prior biopsy; or Metastatic disease involving bone previously confirmed on imaging (e.g. CT or MRI) with known (biopsied) primary disease (primary bone cancer is excluded) Prior systemic therapy for metastatic disease Have histologically confirmed unresectable or metastatic melanoma having received no more than one prior systemic therapy for the metastatic disease (eg. ipilumamab and/or BRAF inhibitor); unresectable or metastatic smoking-associated NSCLC having received no more than one prior systemic therapy for the metastatic disease (eg standard of care chemotherapy, as appropriate); unresectable or metastatic transitional cell carcinoma of the bladder, urethra, ureter or renal pelvis having received no more than one prior systemic therapy for the metastatic disease. Have histologically or cytologically diagnosed oligo-metastatic prostate cancer; oligo-metastatic disease is defined to reflect men with low volume disease; specifically, oligo-metastatic disease is defined as less than extra-pelvic metastases; metastatic lesions may be lymph nodes Known metastatic disease Metastatic disease Have metastatic disease Metastatic disease Have metastatic disease Last treatment for metastatic disease including Trastuzumab in combination with pertuzumab Patients with metastatic cancer Documentation of metastatic disease - sites of metastatic disease able to be targeted by SABR Prior chemotherapy for metastatic disease Metastatic disease No prior chemotherapy for metastatic disease Prior systemic chemotherapy for metastatic disease Imaging confirmation of metastatic disease At least one prior treatment for metastatic disease Any metastatic disease Patients with prior surgical resection who develop radiological or clinical evidence of metastatic cancer do not require separate histological or cytological confirmation of metastatic disease unless an interval of > years has elapsed between the primary surgery and the development of metastatic disease; clinicians should consider biopsy of lesions to establish diagnosis of metastatic disease if there is substantial clinical ambiguity regarding the nature or source of apparent metastases Patient has known metastatic disease I . Metastatic disease. Patients should have at least one organ system involved with distant metastatic disease; if only a single metastatic lesion is present, biopsy is mandatory OTHER METASTATIC SITES: Patients with metastatic disease Presence of extra-cranial metastatic disease Group A: Metastatic disease, myeloma, lymphoma; No prior systemic therapy for metastatic disease. Patients with metastatic disease Metastatic disease CNS metastatic disease Unilobar disease Patients with known metastatic disease are excluded Pathologically (histologically or cytologically) confirmed metastatic disease with a new tumor involving or abutting bone that has the clinical and imaging features of metastatic disease\r\n* If the nature of the metastatic disease has been previously documented, index tumor to be treated does not require further documentation (i.e., biopsy) Treatment with erlotinib prior to developing metastatic disease Metastatic disease. Prior systemic therapy for metastatic disease. Patients must have demonstrated metastatic disease and not received > lines of chemotherapy for metastatic disease (N/A for phase II) Presence of metastatic disease to the bone Metastatic disease on baseline staging scans The patient has another metastatic cancer disease. No prior chemotherapy for metastatic disease Metastatic cancer Patients with metastatic disease Have metastatic cancer Patients with metastatic disease (BREAST ONLY) Patients with metastatic disease Presence of metastatic disease Diagnosis of pathologically confirmed metastatic pancreatic, hepatobiliary, esophageal, or lung cancer, either newly metastatic or metastatic at presentation (M+) and enrollment within weeks of diagnosis; measurable disease need not be present Free of macro-metastatic disease Any spinal cord compromise or instrumentation due to metastatic disease; radiation therapy for metastatic disease is allowed RENAL CANCER: Starting any systemic therapy for metastatic disease Presence of metastatic disease Presence of metastatic disease Subject with metastatic disease Known metastatic disease Informed of metastatic disease within the previous weeks No prior therapy for metastatic disease Presence of metastatic disease There is no limit to the amount of prior therapy for metastatic disease Patients with metastatic disease Metastatic disease Absence of metastatic disease as documented by radiographic scans T disease Patients with metastatic disease Metastatic disease Patients with known metastatic disease Patients with any metastatic disease Patients with known metastatic disease Patients with metastatic disease Have confirmed metastatic disease Patient: Does not have metastatic disease Does not have metastatic disease Patients have either metastatic or non-metastatic lung cancer as defined in history and physical