Introduction: Managing diabetes during physical activity (PA) presents unique challenges that can significantly impact glycemic control and diabetes management. Some Automated Insulin Delivery (AID) systems have introduced additional settings that reduce insulin delivery rates and/or increase blood glucose targets to help minimize the risks of hypoglycemia and hyperglycemia associated with physical activity. This study examined how exercise modes affect diabetes management outcomes among AID users, compared to those using non-AID pumps. Methods: Between February-June 2024, 1,668 adults with Type 1 diabetes in the United States completed online surveys in which they reported their A1c levels, PA frequency, challenges related to glycemic control during and after PA, and diabetes management satisfaction. Participants included AID exercise mode users (n=776), AID non-exercise mode users (n=730), and non-AID pump users (n=162). Results were analyzed at the 95% confidence level. Results: Significantly more AID exercise mode users met the recommended 150 minutes of moderate-to-vigorous PA per week (30%) compared to those who did not use the exercise mode (17%) and non-AID pump users (19%). However, AID exercise mode users faced greater challenges with glycemic control, reporting significantly higher rates of hypoglycemia during (51%) and after (41%) physical activity, as well as more frequent hyperglycemia after exercise (15%) compared to the other groups. Diabetes management satisfaction was significantly lower for both AID exercise mode users (34%) and non-exercise mode users (34%) compared to non-AID users (54%), suggesting that exercise modes do not provide a viable solution to the general challenges AID users face with exercise. Further, more non-AID pump users had an A1c ≤7% (75%) compared to AID non-exercise mode users (74%) and AID exercise mode users (68%); however, these differences were non-significant. Conclusion: Glycemic control and satisfaction with diabetes management are weaker among AID users compared to non-AID pump users, suggesting that while AID systems, particularly with activity mode, may offer benefits in PA engagement, they introduce complexities in glycemic management that may impact user satisfaction and health outcomes. Further research is needed to optimize exercise mode features, alongside patient education on the impact of exercise on blood glucose, to reduce these challenges and improve overall diabetes management satisfaction.