Gallery Run (GR) is a classroom-based dynamic learning technique that promotes higher-order thinking and co-operative learning. This research study examined the influence of GR strategy on Saudi upper-intermediate English as a foreign language(EFL) learners' oral skills. First off, 62 upper-intermediate EFL learners from a language school in Riyadh were opted and randomly sectioned into an experimental group and a control group. Then, the participants in the two groups were given a speaking pretest. The experiment group applied the GR technique in their classroom, whereas the control group received no treatment and continued with an ordinary classroom program. After two-month classes, a speaking posttest was given to the two groups. To analyze the data collected, Independent and Paired Samples T-tests were conducted. The results showed that the experimental group excelled and outperformed the control group. The results also showed that 25.8% and 48.3% of the participants agreed and strongly agreed respectively that the GR technique enhanced their self-dependence. Furthermore, 45% of the participants reported that the ambiance was delightful, which conduced to the amelioration of their speaking competence. Another significant result was that 61.2% and 19.3% of the learners strongly agreed and agreed respectively that GR reduced the levels of loneliness and social anxiety. Furthermore, %58.1 strongly agreed that the GR technique did not put them under any kind of stress, nor did it encourage social loafing. A final finding reported by the 48.4 % of the learners was that GR reduced their alexithymia, social anxiety, and self-monitoring.