<p>This study experimentally investigated the electromechanical behavior and fracture energy of high-performance fiber-reinforced concretes (HPFRCs) under repetitive bending loading. Four series of studied HPFRCs have identical mortar matrix but different added fiber types and contents as follows: HPFRC0 (no fiber, 0.0% by volume), HPFRC1 (macro hooked fiber, 1.5% by volume), HPFRC2 (micro smooth fiber, 1.5% by volume), and HPFRC3 (hybrid fiber, including 1.0% by volume macro hooked fiber mixed with 0.5% by volume micro smooth fiber). The self-sensing capability of the studied HPFRCs was evaluated through the proposed flexural gauge factor, which was calculated from fractional change in electrical resistance (FCR) during loading. All the HPFRCs exhibited high self-sensing capabilities under flexure with repetitive loading. The self-sensing capabilities of the HPFRCs decreased with increasing the fatigue stress ratio. The FCR at the compression side increased, whereas that at the tension side decreased with an increase in loading, regardless of HPFRCs series. It was found that the HPFRCs demonstrated their flexural gauge factors ranging from 125.5 to 1340.8; these values are significantly greater than the normal gauge factor of metal only around 2. The HPFRC0 series produced the highest gauge factor, i.e., the best self-sensing capability. The order of the HPFRCs series in terms of flexural gauge factor with the fatigue stress ratio less than 0.3 was observed as follows: HPFRC0 &gt; HPFRC1 &gt; HPFRC2 &gt; HPFRC3. However, the order in terms of elastic fracture energy, plastic fracture energy, and total fatigue fracture energy was contrary.</p>