Best Continuous Glucose Monitor (CGM)
Best CGM

Continuous glucose monitoring (CGM) is essential for endurance athletes who want to optimize their performance and manage their blood sugar levels.

CGMs are wearable devices that provide real-time glucose readings, allowing athletes to adjust their nutrition and insulin intake accordingly.

With so many CGM options on the market, it can take time to determine the best fit for endurance athletes.

A runner's wristband displays real-time glucose levels during a marathon

To help athletes make an informed decision, this article will review some of the best continuous glucose monitors for endurance. The article will provide an overview of each device, including its features, accuracy, and ease of use. It will also discuss the pros and cons of each device, as well as any additional considerations that athletes should keep in mind when selecting a CGM. By the end of this article, athletes will have a better understanding of which CGM is the best fit for their individual needs and goals.

Importance of Continuous Glucose Monitoring in Endurance Sports

Continuous Glucose Monitoring (CGM) systems have revolutionized diabetes management by providing real-time glucose data to people with diabetes. However, CGM systems have also found their way into the world of endurance sports, where they are used to monitor glucose levels during long training sessions and races.

CGM systems are particularly important in endurance sports because they allow athletes to monitor their glucose levels in real-time, which can help prevent hypoglycemia or hyperglycemia. Hypoglycemia, which is low blood sugar, can cause dizziness, fatigue, and confusion, while hyperglycemia, which is high blood sugar, can cause dehydration, fatigue, and muscle cramps.

By monitoring their glucose levels, athletes can adjust their food and insulin intake to maintain stable blood sugar levels throughout their training or race. This can help improve their performance and prevent health complications.

Moreover, CGM systems can help athletes understand how their body responds to different types of food and exercise. By analyzing the data from their CGM system, athletes can identify which foods and exercises cause their blood sugar levels to rise or fall and adjust their training and nutrition accordingly.

In conclusion, CGM systems are a valuable tool for athletes participating in endurance sports. They provide real-time glucose data, which can help prevent health complications and improve performance. By analyzing the data from their CGM system, athletes can also gain valuable insights into how their body responds to different types of food and exercise, which can help them optimize their training and nutrition.

Criteria for Selecting the Best Continuous Glucose Monitor

A display of various continuous glucose monitors, with focus on durability and accuracy, surrounded by endurance-related imagery

When selecting the best continuous glucose monitor for endurance, there are several important criteria to consider. These include accuracy, durability, battery life, compatibility with other devices, and ease of use.

Accuracy is perhaps the most crucial factor to consider when selecting a continuous glucose monitor. Endurance athletes rely heavily on accurate readings to make informed decisions about their nutrition and hydration during prolonged physical activity. A monitor with a high level of accuracy will provide reliable readings even during intense exercise.

Durability is another essential criterion for an endurance athlete. A continuous glucose monitor should be able to withstand the rigors of prolonged physical activity without breaking or malfunctioning. A monitor with a durable design will last longer and provide more reliable readings over time.

Battery life is also an important consideration for endurance athletes. A continuous glucose monitor with a long battery life will allow athletes to monitor their glucose levels for extended periods without worrying about the device running out of power.

Compatibility with other devices is another important criterion for selecting a continuous glucose monitor. Athletes may want to connect their monitor to other devices, such as a smartphone or fitness tracker, to track their glucose levels and other health metrics.

A compatible monitor will allow athletes to connect and integrate their data across multiple devices easily.

Finally, ease of use is an important factor to consider when selecting a continuous glucose monitor. A monitor that is easy to use and understand will allow athletes to quickly and easily monitor their glucose levels during exercise without disrupting their routine.

A monitor with a simple and intuitive interface will also be more accessible to athletes with varying levels of technical expertise.

Top Continuous Glucose Monitors for Endurance Athletes

A sleek, high-tech continuous glucose monitor attached to an athlete's arm, with a digital display showing real-time glucose levels

Endurance athletes require a continuous glucose monitor that can keep up with their rigorous training schedules. Here are the top three continuous glucose monitors that are perfect for endurance athletes.


Signos empowers people to make healthy decisions and lose weight based on real-time data from their own personal CGM. You can click to learn more about Signos.


Nutrisense offers real-time glucose data, empowering you to understand the impact of your food and lifestyle choices on your wellness goals. Gain valuable insights to optimize your well-being and make informed decisions.


Levels empower you to understand the impact of food on your health by providing valuable insights derived from cutting-edge biosensors, such as continuous glucose monitors (CGMs).

In conclusion, endurance athletes require a continuous glucose monitor that can keep up with their intense training schedules. These top three continuous glucose monitors provide accurate and reliable glucose readings, making them perfect for endurance athletes.

Features to Consider for Endurance Athletes

Endurance athletes require a continuous glucose monitor that can keep up with their active lifestyle. Here are some features to consider when selecting a CGM for endurance sports:

Sensor Accuracy

Sensor accuracy is a critical factor to consider when choosing a CGM. Endurance athletes need a CGM that provides accurate and reliable glucose readings, especially during intense physical activity. A CGM with high accuracy can help athletes make informed decisions about their glucose levels and adjust their insulin or carbohydrate intake accordingly.

Wearability and Comfort

Endurance athletes need a CGM that is comfortable to wear for extended periods. The device should be lightweight, compact, and designed to withstand the rigors of intense physical activity. A CGM with a secure and reliable adhesive can help ensure that the device stays in place during exercise.

Battery Life and Charging

Battery life and charging are also important factors to consider. Endurance athletes need a CGM with a long battery life that can last for the duration of their activity. A device that requires frequent charging can be inconvenient and disruptive to an athlete’s training routine. Additionally, a CGM with a fast charging time can help ensure that the device is always ready when needed.

In summary, endurance athletes require a CGM that is accurate, comfortable, and has a long battery life. By considering these features, athletes can select a device that meets their specific needs and helps them achieve their training goals.

Data Management and Analysis

A sleek, modern continuous glucose monitor with data analysis software. Graphs and charts display glucose levels over time

When it comes to endurance sports, accurate and reliable data management and analysis are crucial for optimizing performance.

A high-quality continuous glucose monitor (CGM) can provide athletes with real-time access to their glucose levels, as well as long-term trend analysis and integration with other fitness devices.

Real-Time Data Access

One of the most significant benefits of a CGM for endurance athletes is the ability to monitor glucose levels in real-time. This allows athletes to make informed decisions about fueling and hydration during training and competition, helping them to avoid the negative effects of hypoglycemia and hyperglycemia.

CGMs typically come with a mobile app that allows athletes to view their glucose levels in real-time, set alerts for high and low levels, and track trends over time. Some CGMs even offer customizable alerts based on individual glucose targets, helping athletes to stay within their desired range.

Long-Term Trend Analysis

In addition to real-time data access, CGMs also provide valuable long-term trend analysis. By tracking glucose levels over time, athletes can identify patterns and make adjustments to their training and nutrition plans accordingly.

CGM apps typically offer a range of data visualization tools, including graphs and charts that allow athletes to see how their glucose levels have changed over time. Some CGMs even offer predictive analytics, which can help athletes anticipate changes in glucose levels and adjust their behavior accordingly.

Integration with Other Fitness Devices

Finally, CGMs can also be integrated with other fitness devices, such as heart rate monitors and GPS watches. This allows athletes to track multiple metrics simultaneously, providing a more comprehensive picture of their overall performance.

Integration with other devices also allows athletes to sync their glucose data with other fitness apps and platforms, such as Strava and Training Peaks. This can help athletes to better understand how their glucose levels impact their overall performance and make more informed decisions about their training and nutrition plans.

Overall, a high-quality CGM is an essential tool for endurance athletes looking to optimize their performance. With real-time data access, long-term trend analysis, and integration with other fitness devices, a CGM can provide athletes with the insights they need to reach their full potential.

User Reviews and Testimonials

A sleek, durable continuous glucose monitor with a comfortable and secure fit, designed for endurance and active lifestyles

Continuous glucose monitors (CGMs) have become an essential tool for endurance athletes to manage their blood sugar levels during training and competition. Here are some user reviews and testimonials for the best continuous glucose monitors for endurance:

Dexcom G6

  • “The Dexcom G6 has been a game-changer for me. It’s so easy to use and provides accurate readings throughout my long runs.” – Sarah T.
  • “I love how the Dexcom G6 integrates with my smartwatch. I can easily monitor my glucose levels without having to pull out my phone.” – John M.
  • “I’ve tried other CGMs in the past, but the Dexcom G6 is by far the most reliable and consistent.” – Emily S.

FreeStyle Libre 2

  • “The FreeStyle Libre 2 is great for endurance sports because it’s so small and lightweight. I hardly even notice it’s there.” – Tom B.
  • “I appreciate how the FreeStyle Libre 2 has customizable alarms that alert me when my glucose levels are too high or too low.” – Lisa K.
  • The FreeStyle Libre 2 has made it much easier for me to manage my diabetes while training for marathons.” – Mike D.

Medtronic Guardian Connect

  • “The Medtronic Guardian Connect has been a lifesaver for me. It’s so accurate and gives me peace of mind during long bike rides.” – Alex F.
  • “I like how the Medtronic Guardian Connect has a feature that predicts future glucose levels based on trends. It’s helped me avoid lows and highs.” – Rachel L.
  • “The Medtronic Guardian Connect has improved my athletic performance by allowing me to fine-tune my glucose levels during training.” – David W.

Overall, these CGMs have received positive reviews from endurance athletes who rely on them to manage their blood sugar levels. It’s important to consult with a healthcare professional to determine which CGM is best for individual needs and preferences.

Cost Analysis and Insurance Coverage

A person is comparing cost and insurance coverage for continuous glucose monitors, with a focus on endurance use

Continuous glucose monitors (CGMs) can be a significant investment for people with diabetes, especially those who participate in endurance activities. The cost of a CGM can vary depending on the brand, features, and insurance coverage.

In general, a CGM system can cost anywhere from $500 to $1,500. This includes the receiver, transmitter, and sensors. Some brands offer subscription plans that include ongoing sensor shipments for an additional fee. It is important to consider the cost of replacement sensors, which can range from $50 to $100 each and need to be replaced every 7-14 days depending on the brand.

Insurance coverage for CGMs varies depending on the individual’s insurance plan. Some plans cover CGMs as durable medical equipment, while others may require prior authorization or a medical necessity letter from a healthcare provider. It is important to check with your insurance provider to determine coverage and out-of-pocket costs.

Some CGM brands offer patient assistance programs to help with the cost of the system and replacement sensors. These programs are typically income-based and require an application process.

Overall, the cost of a CGM system can be a significant investment, but the benefits of improved glucose control and safety during endurance activities may outweigh the cost for some individuals with diabetes. It is important to consider insurance coverage and patient assistance programs when making a decision about which CGM to purchase.

Maintenance and Support for Continuous Glucose Monitors

Maintaining and supporting continuous glucose monitors is crucial for ensuring their accuracy and longevity. Most manufacturers provide detailed instructions on how to care for and maintain their devices. It is recommended to follow these instructions closely to prevent damage to the device and ensure accurate readings.

One important aspect of maintenance is keeping the sensor site clean and dry. This can be done by using an alcohol wipe to clean the area before inserting the sensor. It is also important to regularly check the sensor site for any signs of irritation or infection.

In addition to proper maintenance, it is important to have access to reliable customer support. Most manufacturers offer customer support via phone, email, or chat. It is recommended to test out the customer support before purchasing a device to ensure that any questions or concerns can be addressed in a timely and satisfactory manner.

Overall, proper maintenance and reliable customer support are essential for ensuring the accuracy and longevity of continuous glucose monitors. By following the manufacturer’s instructions and having access to reliable support, users can ensure that their device is functioning properly and providing accurate readings.

Future Trends in Glucose Monitoring Technology

Continuous glucose monitoring technology has come a long way since its inception. The future of glucose monitoring technology looks promising, with several advancements already in the works. Here are some of the future trends in glucose monitoring technology:

1. Non-Invasive Monitoring

Non-invasive glucose monitoring is the holy grail of glucose monitoring technology. It eliminates the need for finger pricks and invasive sensors, making glucose monitoring more convenient and less painful. Some of the non-invasive monitoring technologies currently in development include optical sensors, radiofrequency-based sensors, and sweat-based sensors.

2. Artificial Intelligence

Artificial intelligence (AI) has the potential to transform glucose monitoring technology. AI algorithms can analyze glucose data in real-time and provide personalized recommendations to the user. This can help people with diabetes make better decisions about their diet, exercise, and medication.

3. Improved Accuracy

Accuracy is crucial when it comes to glucose monitoring technology. Inaccurate readings can lead to incorrect treatment decisions, which can have serious consequences. Several companies are working on improving the accuracy of their glucose monitoring devices. Some of the improvements include better sensors, advanced algorithms, and improved calibration techniques.

4. Integration with Other Devices

Glucose monitoring devices are becoming more integrated with other devices, such as insulin pumps and smartphones. This integration can provide users with more data and insights about their glucose levels. For example, some glucose monitoring devices can now send alerts to the user’s smartphone when their glucose levels are too high or too low.

In conclusion, the future of glucose monitoring technology looks bright. Non-invasive monitoring, artificial intelligence, improved accuracy, and integration with other devices are just a few of the trends that will shape the future of glucose monitoring technology.

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