Coros Apex 4 Multisport GPS Watch Black 42mm

Built for Endurance, Precision, and Performance
The Coros Apex 4 Multisport GPS Watch is designed for endurance athletes who demand reliable data, rugged durability, and long-lasting battery life. With up to 65 hours of GPS battery life in the 46mm version (41 hours in 42mm), it supports extended adventures, races, and training blocks. Its dual-frequency GPS, vertical algorithms, and dual-range barometer offer exceptional accuracy in alpine environments, sheer rock faces, or deep backcountry trails.

Advanced Mapping with Global Coverage
Explore with confidence using free global maps, trail and street names, turn-by-turn directions, and built-in points of interest. The Coros Apex 4 GPS watch for triathletes features 30x faster map rendering speeds for real-time responsiveness. The 1.3-inch MIP touchscreen (1.2-inch on 42mm) remains visible in direct sun, snow glare, or shaded forest paths, making it one of the best GPS watches for outdoor adventure.

Rugged Design with Alpine-Grade Materials
Constructed with a lightweight titanium bezel, sapphire glass display, and reinforced lugs, this rugged sports watch is made to handle tough terrain. The always-on Memory-in-Pixel screen combines touch functionality with ultra-clear visibility. Built to withstand the elements, it's ideal for athletes training in extreme conditions or racing at elevation.

Smart Features with Real-Time Feedback
Track HRV, SpO2, sleep, recovery, and training load with a 360-degree health and performance view. Integrated speaker and mic provide audio alerts, hands-free calls, and Voice Pins during training. 3D Flyovers and Adventure Journaling let you visualize routes post-activity. With real-time weather tracking, air pressure, wind, and temperature insights are always a glance away.

Alpine-Grade Engineering - Lightweight Titanium. Reinforced Lugs. Sapphire Glass.

Razor-Sharp Accuracy, Without Limits
APEX 4 delivers industry-leading accuracy across GPS, pace, heart rate, and elevation tracking, along with the ultra-long battery life you have come to expect from COROS.

Where Endurance Meets Altitude
Mountain sports have unique demands. APEX 4 has been designed to meet all of them.

Trail Running

Long Run Ready
From your first trail race to your next 100-milewin, APEX 4 provides on-device global maps,3D terrain views, real-time Effort Pace, route-planning, and fitness metrics designed to help you track your training.

Effort Pace
Effort Pace tells you your equivalent pace on flat terrain so you know when to push, and when to dial back.

Global Maps
Landscape and Topo map layers with street and trail names give you the information you need when you need it, even without cell service.

Navigation
Turn-by-Turn directions, street names, POI's and Back to Start make sure you always know where you're headed, and where you've been.

Running Fitness
Find out Race Prediction times, and what zones to train in to improve specific abilities whether you're prepping for an ultra, or your next 5k all-out effort.

Climbing

Log Every Send
Vertical GPS tuned for climbing and four specialized climbing modes, APEX 4 has everything you need to log every climb with precision, and nothing you don't.

Voice Pins
Save beta mid-route with just your voice so you can remember every crux, move, and emotion you felt.

Four Climbing Modes
Switch between bouldering, single-pitch, multi- pitch, and mountain climb to have data that fits your exact needs.

Skiing

Track The Turns You Earned
Track your vertical in real time, stay oriented on remote descents with advanced map layers, and rely on a display that is always visible. No matter the snow, sun, or your speed.

Topo Maps
Read the mountain instantly with contour lines and terrain details made for ski travel.

Weather
Get live conditions so you can make smarter calls on every skin up and descent.

Precision Metrics
Measure vertical, elevation gain, and heart rate with accuracy you can trust.

Navigation
Stay on course by syncing a GPX track to your watch, and be alerted when you've gone off- course, even in whiteout conditions.

Mountain Sport Training System
APEX 4 and the COROS app form a connected training system built for athletes who want to improve.

Training Status
Training Status tells you if you're building, maintaining, or overreaching-so you stay in control across every season.

Training Load
Training Load tracks how much work you've put in across runs, rides, climbs, and touring.

Base Fitness
Base Fitness shows your long-term aerobic fitness.

Recovery And Readiness Hub

Sleep
Track your total sleep time, sleep phases, sleep quality, and naps.

HRV
Check your overnight HRV to see how your body is responding to training and stress.

Daily Stress
Track your body's stress levels with a simple 1-100 score

Recovery Timer
Recovery Timer shows when your body is ready for easy or hard training, helping you balance rest and effort.

Tools For The Ascent
Accurate data, zero-lag mapping, and incredible battery set you up for success, no matter the task at-hand.