Glass fiber-reinforced polymer (GFRP) thin-walled structural profiles are gaining traction in civil engineering due to their high strength-to-weight ratio, corrosion resistance, and durability. However, the effectiveness of these structures largely depends on the performance of their connection systems. While bolted joints have been widely used, they introduce stress concentrations and potential durability issues. Adhesively bonded joints offer an alternative, providing a more uniform stress distribution and eliminating the need for mechanical fasteners. Despite these advantages, their application in large-scale structural systems remains limited due to concerns about brittle failure and a lack of established design guidelines. Recent advancements suggest that bonded connections can achieve higher strength and stiffness than bolted counterparts, but challenges such as brittleness of failure and delamination need to be addressed. Strategies to enhance the ductility of bonded joints include the use of flexible adhesives and localized reinforcement techniques. Experimental investigations into the bond behavior of GFRP adhesive joints under static and fatigue loading conditions are essential to better understand their performance and reliability. This work investigates the performance of bonded GFRP pultruded profiles, evaluating the joint strength, stiffness, and fatigue resistance through advanced measurement techniques. The findings contribute to the ongoing development of design recommendations and highlight the potential of bonded connections as a viable alternative for structural GFRP applications.