Personalized Marathon Training Plan Guide

Preparing for a marathon requires a systematic training plan. RunBox AI coach creates a customized 16-20 week marathon training plan based on your fitness level, goal time, and available training time.

Why Choose an AI-Customized Marathon Training Plan?

1. Personalized Assessment: Based on your running experience and fitness condition
2. Smart Adjustments: Training intensity optimizes automatically with progress
3. Scientific Pacing: Based on your target finish time
4. Injury Prevention: Reasonable intensity progression to avoid injuries

epson sports watch first impressions at beijing marathon</

Hello, everyone. My name is Time S. During this trip to the Beijing Marathon, I rented an Epson GPS sports watch at the Epson booth at the Beijing Marathon Expo.

When I think of Epson, what comes to mind is their famous printers. Actually, Epson started out making watches. The full name of the company is Seiko Epson Corporation. Founded in Japan in 1942, they initially made clocks and clock components. Seiko invented the world's first quartz watch in 1969, which was a huge success in an era where precision was paramount in the watch industry, with an annual error of only a few seconds. (Mechanical watches, affected by gravity, have significant errors and need daily adjustments. Although the tourbillon can correct these errors, its mechanism is very expensive and only used in top-tier watches, making it impractical for widespread use.) Affordable and durable quartz watches quickly dominated the global watch market, leaving the Swiss watch industry in dire straits, even on the brink of bankruptcy! Even old brands like Jaeger-LeCoultre had to sell their factories! Until a man named Nicolas Hayek stepped in, buying up Swiss watch brands and proposing a new concept: watches are about history and taste, and precision is good enough... Well, well. In terms of history, Seiko had only been around for twenty or thirty years, how could it compare to the centuries-old Swiss watch industry? In terms of taste, how could quartz movements compare to the charm of mechanical movements? After this, the Swiss watch industry miraculously revived and started selling even more expensively! Now you know why you can't afford a Swiss watch? Blame this guy!

SF-850 Accessories

The Epson SF-850 has six main features.

For those with experience using sports watches, the operation will be familiar. Turn it on, select the language, and choose between kilometers and miles. If you're outdoors, you can choose automatic time synchronization. Connect to the recommended app, Codoon.

One design flaw of the Epson SF-850 that I dislike is the lack of a quick return button. You have to navigate back step by step to the return menu and then press the confirm button to go back.

Time was tight. I received the Epson SF-850 on September 16th and competed on September 17th. I adjusted it to the running interface and didn't dare to press any buttons randomly during the race. I maintained a heart rate below 170 throughout, and the real-time pace of 5.35 was very accurate, thanks to the high-precision GPS and heart rate sensor. I finished the race in 3.55 hours! Although I hit the wall and slowed down significantly after 35 kilometers, I finished safely, which is what matters.

Sync sports data with Codoon.

Here's a video to give you a feel for it.