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    Rendezvu
    On a mission to get more people to enjoy the outdoors© 2026
    RendezvuAboutFor HostsFor BrandsFor Shoppers
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    Brand: COROS

    Category: Running General

    Recommended by Emi Stretton, What Gets Me Through the Miles — Philadelphia, PA

    Highlights: long distance

    The APEX 4 by COROS is a premium multi-sport GPS watch designed for athletes who demand precision and performance. With advanced tracking features and a robust design, it empowers users to reach their fitness goals while providing real-time insights. 1. High-Resolution Touchscreen: A vibrant 1.5-inch display with a resolution of 240x240 pixels for clear visibility in all lighting conditions. 2. Multi-Sport Modes: Supports over 200 different sports, including running, cycling, swimming, and more, allowing for versatile training options. 3. Long Battery Life: Up to 30 hours of continuous GPS tracking and up to 100 hours in UltraMax mode, ensuring you stay powered during long adventures. 4. Advanced Heart Rate Monitoring: Equipped with a built-in optical heart rate sensor for accurate tracking of your heart rate during workouts. 5. Water Resistance: Rated at 5 ATM, making it suitable for swimming and water sports without worry. 6. Smart Notifications: Receive calls, texts, and app alerts directly on your wrist, keeping you connected while on the move. 7. Customizable Watch Faces: Personalize your watch with a variety of watch faces to match your style and preferences. The APEX 4 is ideal for serious athletes and fitness enthusiasts who engage in various sports and outdoor activities. It excels in environments ranging from urban running trails to open water swimming, making it perfect for training and competition alike. Designed for users of all skill levels, this watch is particularly beneficial for those looking to track their performance metrics and improve their training efficiency. Whether you're preparing for a marathon or enjoying a weekend hike, the APEX 4 is your reliable companion for every step of the journey.

    Price: $429 - $479

    Expert Review

    I use my COROS APEX 4 to track my training, monitor effort, and keep an eye on the data that actually matters when I’m putting in serious mileage. I’ve found it especially useful for long runs and ultramarathon training, where pacing, elevation, navigation, battery life, and knowing when to back off can make a big difference. I’m always learning how to use the data to train smarter—not just run more.

    Recommended by Emi Stretton

    Frequently asked questions

    What does Emi Stretton say about the APEX 4?

    I use my COROS APEX 4 to track my training, monitor effort, and keep an eye on the data that actually matters when I’m putting in serious mileage. I’ve found it especially useful for long runs and ultramarathon training, where pacing, elevation, navigation, battery life, and knowing when to back off can make a big difference. I’m always learning how to use the data to train smarter—not just run more.

    Rendezvu
    APEX 4 by COROS — recommended by Emi Stretton
    Misc

    APEX 4

    Emi Stretton
    Emi StrettonRecommended in “10 Products I Actually Use”
    I use my COROS APEX 4 to track my training, monitor effort, and keep an eye on the data that actually matters when I’m putting in serious mileage. I’ve found it especially useful for long runs and ultramarathon training, where pacing, elevation, navigation, battery life, and knowing when to back off can make a big difference. I’m always learning how to use the data to train smarter—not just run more.
    Purchasing through this link directly supports Emi
    Misc

    APEX 4

    Emi Stretton
    Emi StrettonRecommended in “10 Products I Actually Use”
    I use my COROS APEX 4 to track my training, monitor effort, and keep an eye on the data that actually matters when I’m putting in serious mileage. I’ve found it especially useful for long runs and ultramarathon training, where pacing, elevation, navigation, battery life, and knowing when to back off can make a big difference. I’m always learning how to use the data to train smarter—not just run more.
    Purchasing through this link directly supports Emi
    APEX 4 by COROS — recommended by Emi Stretton

    This product is for…

    Trail runners, ultramarathon athletes, and mountain sports enthusiasts who prioritize battery life, navigation, and clean data over smartwatch connectivity. The 42mm size is specifically noted as a good fit for smaller wrists.

    Worth noting…

    The Apex 4 adds a faster processor, sapphire glass, street-name maps with POIs, and button/dial improvements over the Apex 2. It does not reset during mid-activity charging and supports GPX file loading for race course navigation.

    Why does Emi Stretton recommend COROS?

    Emi Stretton recommends the COROS APEX 4 for running general. I use my COROS APEX 4 to track my training, monitor effort, and keep an eye on the data that actually matters when I’m putting in serious mileage. I’ve found it especially useful for long runs and ultramarathon training, where pacing, elevation, navigation, battery life, and knowing when to back off can make a big difference. I’m always learning how to use the data to train smarter—not just run more.

    Is the APEX 4 a good running general?

    Yes — Emi Stretton recommends the APEX 4 by COROS as their running general pick. I use my COROS APEX 4 to track my training, monitor effort, and keep an eye on the data that actually matters when I’m putting in serious mileage. I’ve found it especially useful for long runs and ultramarathon training, where pacing, elevation, navigation, battery life, and knowing when to back off can make a big difference. I’m always learning how to use the data to train smarter—not just run more.

    Is the APEX 4 good for long distance?

    Emi Stretton recommends it for long efforts: I use my COROS APEX 4 to track my training, monitor effort, and keep an eye on the data that actually matters when I’m putting in serious mileage. I’ve found it especially useful for long runs and ultramarathon training, where pacing, elevation, navigation, battery life, and knowing when to back off can make a big difference. I’m always learning how to use the data to train smarter—not just run more.

    More from Emi Stretton's 10 Products I Actually Use

    • LMNT Variety Pack
    • The Feed Precision Fuel and Hydration Chews
    • Injinji Run Lightweight Mini-Crew
    • COROS Heart Rate Monitor
    • Salomon GRVL Skin 4 Hydration Vest
    • rabbit Ice Bandana
    • SPIbelt Dual Pocket PRO
    • Amphipod Soft-Tech Luxe Soft Flask Handheld Water Bottle - 16 fl. oz. Blue 16 Fl Oz

    View Emi Stretton's expert gear recommendations on Rendezvu