Endurance commences RC drilling at Eagle Offset, Reliance Gold

Vancouver, British Columbia--(Newsfile Corp. - September 14, 2026) - Endurance Gold Corporation (TSXV: EDG) (OTCQB: ENDGF) (FSE: 3EG) (the " Company " ) is pleased to announce that the 2026 Reverse Circulation (" RC ") drilling program has now commenced on the Eagle Offset Target on the Company's 100%-owned Reliance Gold Project (the " Project "). The road-accessible Project is located 4 kilometres (" km ") east of Gold Bridge, BC in the historic Bridge River Mining Camp. In January 2026, the Company reported an inaugural Inferred Mineral Resource Estimate of 19.6 million tonnes at an average grade 2.30 grams per tonne ("gpt") Au , for 1.45 million ounces contained gold (" MRE ") (see MRE Disclaimer below).

As announced on January 21, 2026 , the Eagle Offset Target is interpreted to be a structural offset and southern continuation of the Royal Shear Trend that hosts the MRE. The geochemical soil anomaly is 1,300 m x 500 m wide with anomalous gold, arsenic and antimony in talus. Bedrock grab samples up to 8.16 gpt gold are associated with silicified and altered mafic volcanics (see figure 1).

Highlights include:

RC drilling has now commenced at the Eagle Offset Target with a minimum of 25 RC holes planned.

Two drill access trails have recently been excavated across the previously undrilled soil anomaly resulting in new bedrock exposures of intense carbonate altered, silicified mafic and ultramafic volcanics with areas of mineralized multidirectional quartz-carbonate vein stockworks associated with arsenopyrite and stibnite.

Channel sampling has been completed across the newly exposed bedrock (115 samples sent for assay). Results are pending on these samples.

The Company expects to complete up to 50 RC holes with the balance of these holes to be allocated based on geological observations and pending channel sampling results.

Diamond drilling continues with 9,025 m completed to date in 21 drill holes.

Metallurgical and associated testwork studies remain active and an update is expected shortly.

"Our 2026 diamond drilling program is expanding the MRE while this RC drilling program is intended to deliver new and additional near-surface gold discoveries that warrant diamond drilling to expand the gold-antimony camp potential of the Reliance Project," said Robert T. Boyd, President and CEO.

Current estimates indicate that the 2026 diamond drill program will exceed 10,000 m in the area of the MRE. Additional holes and metres are being added to the MRE expansion program to follow up on observed mineralization intersected in step-out drill holes. Assay results are pending on fourteen (14) of the diamond drill holes completed to date.

The Reliance Gold Project is interpreted to host a shallow-level (Epizonal) Orogenic gold system. Gold mineralization is directly related to varying amounts, though generally low concentrations of sulphides, including pyrite, arsenopyrite, and stibnite. These occur as sulphide replacement and multigenerational breccias, which are frequently associated with pervasive silicification, quartz stockwork and/or quartz breccia infill. The geological setting and drilling results to date support the Company's view that the Project has near surface and underground growth potential within multiple gold +/-antimony deposits. The geological and alteration observations at the newly exposed Eagle Offset outcrops are comparable to the alteration and mineralization seen at the deeper portions of the Imperial and Crown Zones in the MRE area.