Overview

Most endurance athletes rely on a small set of familiar apps, often overlooking powerful platforms that could significantly improve their training, recovery, and race strategy. This list of nine websites highlights valuable tools for tracking data, finding races, improving nutrition, preventing injuries, and making smarter tech purchases. Each platform serves a specific purpose, helping athletes train more efficiently and make better performance decisions.

9 Websites Every Endurance Athlete Should Know About

Most runners, cyclists, and triathletes stick to the same two or three apps for years. They log miles, check pace, maybe glance at a leaderboard, and call it a day. Meanwhile, a handful of platforms exist that could genuinely change how they train, race, and recover. Some of these sites are well-known but poorly understood. Others fly under the radar entirely, used mainly by coaches and elite athletes who guard their resources like trade secrets.

This list pulls together 9 websites that serve different purposes across the endurance world. A few handle training data. Others help you find your next race or fix the tight hip that has been bothering you for months. Each one does something specific and does it well. None of them requires a sports science degree to use, and all of them offer something you probably cannot get from your current setup.

Strava: The Platform That Made Training Social

Strava commands attention because of its scale. The platform serves over 150 million users worldwide, which means your Sunday long run or Tuesday interval session becomes part of a global feed where friends, teammates, and strangers all see what you did.

The company rolled out more than 40 new features in the past year, but the one worth mentioning is Athlete Intelligence. This AI-powered tool analyzes your activity data and gives you summaries of what your workouts actually mean. After launch, more than 80% of users who gave feedback said they found these insights helpful or very helpful. The feature now includes power data analysis and segment breakdowns for subscribers.

Strava also updated its Flyover feature, which creates a 3D map playback of your activities. You can share these directly to Instagram Stories, which sounds minor until you realize how much easier it makes showing people a new route or a hard effort without explaining it in words.

The free version tracks your activities and connects you to others. The paid tier unlocks training logs, live segments, and the AI features mentioned above.

The Feed: Where Nutrition Stops Being Confusing

Endurance nutrition is a mess of conflicting advice, sponsored content, and products that promise everything while explaining nothing. The Feed cuts through this by stocking products from dozens of brands and presenting them alongside educational content that actually helps you understand what you are buying.

The site carries gels, chews, hydration mixes, recovery products, and gear from brands that range from household names to smaller companies making targeted products for specific needs. What makes it useful is the filtering system. You can sort by sport, dietary restriction, flavor preference, and intended use, which turns a 45-minute search into a 5-minute decision.

The Feed also publishes guides and articles that explain how different products work, when to use them, and what combinations make sense for different race distances. This educational angle sets it apart from retailers who list products without context.

For athletes who have tried 15 different gels and still feel lost, or for those who want to experiment with new options before a big race, this site functions as both a store and a learning resource.

TrainingPeaks: The Metrics That Coaches Actually Use

TrainingPeaks is the platform that serious coaches and self-coached athletes use to structure and analyze training over time. Its value comes from three proprietary metrics that have become industry standards.

Training Stress Score measures the total load from a single workout by combining duration and intensity into one number. Chronic Training Load averages your daily stress over 42 days to give you a fitness number. Acute Training Load does the same over 7 days to show fatigue. The relationship between these numbers produces Training Stress Balance, which tells you whether you are fresh or tired.

These metrics have real-world validation. Experienced triathlon coaches have noted that athletes who finish the Ironman World Championship in Kona under 9 hours typically have a Chronic Training Load around 150. Very fit athletes can safely increase their load by 5 to 7 points per week without breaking down.

TrainingPeaks integrates with most devices and allows coaches to prescribe workouts remotely while monitoring athlete compliance and response. For self-coached athletes, the workout library and planning calendar make it possible to structure a season without guessing.

DC Rainmaker: 60-Page Reviews Because Someone Has To

Ray Maker runs a website that has become the definitive resource for sports technology reviews. Before buying a GPS watch, cycling computer, smart trainer, or power meter, checking DC Rainmaker first saves time, money, and regret.

Some reviews on the site exceed 60 pages when printed and include hundreds of photos. Maker tests products in real training conditions over weeks or months, documenting everything from box dimensions to software quirks that only appear after extended use.

The site covers GPS watches, cycling computers, smart trainers, heart rate monitors, and almost every category of sports gadget available. Each review follows a consistent format, making it easy to compare products across brands.

Maker lives in Mallorca and remains the primary author, which gives the site a consistent voice and testing methodology. The guides section organizes products by category and budget, which helps when you know what type of device you need but have not narrowed down which model suits your situation.

Athletica.ai: Training Plans That Adjust On Their Own

Athletica takes the guesswork out of periodization by using AI to build and adjust training plans based on your actual data. The platform syncs with wearables and sensors, then modifies your schedule according to how you respond to training.

The science behind Athletica comes from HIIT Science, a research-based approach to high-intensity interval training. The platform serves as the practical application of the principles outlined in the HIIT Science textbook, meaning your workouts have academic backing rather than an arbitrary structure.

The AI monitors heart rate variability and training load to prevent overtraining before it happens. Coaches using the platform can swap sessions via the Workout Wizard, and athletes can make adjustments on their own while the system tracks how those changes affect recovery and readiness.

Athletica supports running, cycling, swimming, and triathlon, with programs designed to build endurance, strength, and recovery windows appropriate for each athlete's goals and physiology.

VeloViewer: The Secret Weapon of WorldTour Teams

VeloViewer connects to Strava and transforms your data into visualizations and analysis tools that the basic Strava interface cannot match. All men's and women's WorldTour and ProTour cycling teams use VeloViewer, along with Continental teams, national federations, and race organizers.

The platform has been an official supplier to top professional cycling teams since 2016 and has helped support victories at every Tour de France since 2017. The same tools available to professional race vehicles are available to anyone willing to connect their Strava account.

Features include Explorer Tiles, which gamify visiting new roads and trails by tracking which map squares you have ridden through. The VeloViewer Score lets you compare performance metrics with other users. Maps, 3D and 2D elevation profiles, and detailed activity data give you a clearer picture of your efforts than Strava's native interface provides.

Cyclists who want to understand their data at a deeper level, or who enjoy chasing new roads and comparing themselves to others, will find VeloViewer worth the time to set up.

Ahotu: 72,000 Races Across 195 Countries

Ahotu bills itself as the biggest endurance calendar in the world, and the numbers support that claim. The platform lists over 34,795 events across running, triathlon, cycling, swimming, and swimrun, with total listings exceeding 72,000 races in more than 195 countries.

The site started as a running calendar in 2009 and has grown into a multi-sport resource that covers everything from local 5Ks to ultramarathons on different continents. Filters let you search by sport, distance, location, and date, which makes planning a race season or finding something new while traveling straightforward.

Event organizers use Ahotu to promote their races, so listings often include direct links to registration, course information, and logistical details. For athletes who want to race somewhere new or who are looking for events that fit specific criteria, Ahotu removes the need to search multiple sites or rely on word of mouth.

FindMyMarathon: Built For Boston Qualifiers and PR Chasers

FindMyMarathon solves a specific problem: choosing the right marathon for your goals. The site lists nearly 1,000 marathons and provides data that matters to runners chasing personal records or Boston Qualifying times.

Each race listing includes an elevation profile, speed rating, and course score based on how the terrain affects finishing times. Over 600 course-specific pace bands are available, built on peer-reviewed research about running economy on different gradients. You can generate custom pace bands based on a course's topography, your goal time, and your preferred pacing strategy.

The comparison tool lets you view multiple marathons side by side, evaluating PR potential and Boston Qualifying likelihood before you commit to registration fees and travel. PR Scores and Course Scores cover more than 500 marathons, giving you objective data to inform your decision.

Runners who have struggled to qualify for Boston or who want to maximize their chances of a personal best will find this site more useful than general race listings.

Yoga for Endurance Athletes: The 20 Minutes That Prevent Injuries

Flexibility, balance, and joint stability matter for endurance performance, but most athletes skip yoga because the sessions feel too long or disconnected from their training. Programs designed specifically for endurance athletes solve this by offering 20 to 30-minute sessions that complement existing workout schedules.

Research supports the approach. A 2013 study found that athletes who incorporated yoga four times per week for 9 months showed improvements in vertical jump, speed, endurance, and balance. A 2020 study demonstrated that regular yoga practice lowers injury risk and reduces general fatigue.

The benefits extend beyond injury prevention. Yoga poses train muscles and tendons to stabilize joints, improve range of motion, and build functional strength in the core and stabilizing muscles. Breath awareness and concentration practice transfer directly to racing, where mental focus often determines outcomes.

These programs are designed to fill gaps rather than replace existing workouts. A 25-minute hip-opening routine after a long run costs little time and addresses the tightness that leads to compensation patterns and eventual injury.

How To Choose What You Actually Need

Not every athlete needs all nine of these websites. The right combination depends on where you are in your training and what problems you are trying to solve.

Pick one or two that address your current gaps. Add others as your needs change. Each of these sites does something well enough to become a regular part of how you train, race, and recover.

Conclusion

You don’t need all nine websites, just the ones that solve your current challenges. Whether you need structure, better recovery, smarter race selection, or deeper analytics, choosing the right tools can elevate your performance and make your training more strategic and effective.