This study examined the impact of dry and pre-soaked basalt fibers on the durability, mechanical, and dynamic properties of concrete. Macro (UMA, PMA) and micro (UMI, PMI) fibers were used at a set dosage of 2%, where water-conditioned pre-soaked fibers were soaked for 24 hours before use. Experimental tests were slump, density, compressive strength, split tensile strength, modulus of elasticity, flexural strength, chloride ion diffusion, and dynamic modulus of elasticity, together with finite element analysis (FEA). Results indicated that the pre-soaked micro-fiber mix (PMI) had maximum compressive strength (39 MPa), 18% more than control, while pre-soaked macro-fiber mix (PMA) had maximum flexural strength (3 MPa), 27.8% more than control. Durability tests also indicated PMA to reduce chloride diffusion by 44%, i.e., improved pore refinement. Dynamic modulus rose to 14%, confirming increased stiffness and fatigue life. FEA result confirmed trends with improved stress distribution and delayed failure in the pre-soaked fiber concretes. Pre-soaking basalt fibers guarantees overall improved fiber–matrix interfacial bond, internal curing, and sustainable response under Dynamic loading.