Form meets function with Garmin’s high-performance line of personal trainers — the Forerunner 305, 405 and 205. The Forerunner 305 includes a high sensitivity GPS receiver, new courses feature and robust wireless heart rate monitor for optimal performance.

Lock On to Satellite Signals
Forerunner 305 sports a unique design that wraps the GPS antenna around part of the wrist for a better view of the sky, and its high sensitivity GPS receiver provides improved tracking under trees and near tall buildings. Forerunner 305 also sports a robust ANT+™ wireless heart rate monitor with softer, more comfortable chest strap and superior battery life. It eliminates cross-talk with other devices to reliably measure and send heart rate data, and it helps you train in your optimal heart rate zone.

Take It to the Next Level
Forerunner 305’s courses feature lets you compete against previous workouts: you can compare your pace and heart rate to your past performance over the same run. You can also use Forerunner 305 to train for your next duathlon or triathlon with multi-sport workouts, a feature that lets you seamlessly transition between sports without resetting the unit, so you can use it for running, biking and more.

Train indoors and still track your distance, pace and calories burned with the optional Foot Pod accessory. This wireless sensor attaches to your running shoe and transmits distance and pace data to your Forerunner 305 so you can still use it when GPS reception is unavailable.

Get the Data You Need
You can customize any of Forerunner 305’s three main data screens — up to twelve data fields give you instant feedback on your workout. And, as with every Forerunner, each workout is stored in memory so you can review and analyze the data and see how you’ve improved over time.

Track Your Progress
As an added benefit, you can plan, analyze and store data from your workouts through our online community, Garmin Connect™, or our free Garmin Training Center® software. Conveniently upload your data to Garmin Connect for an in-depth analysis of your workouts, online mapping and route sharing that will take your training to the next level. With Garmin Training Center® software, you can analyze data with interactive graphs that chart your pace, time, distance and heart rate. Overlay your run on a map so you can pinpoint specific areas and see how elevation and other factors affect your performance. Endurance athletes can also use Forerunner with TrainingPeaks.com, an easy-to-use web-based training system designed to help athletes train for any event.

Question: How do I change between Speed and Pace on my Forerunner® 205/305?

Answer:
By holding the Mode button down for 4 seconds, you can select which activity you would like to perform. Switching between activities will change the unit automatically.

Running: Pace
Biking: Speed
Other: Speed

To change between Pace/Speed in Mode, follow these steps:

• Press Mode till you reach the Main Menu
• Select Settings and press Enter
• Select the type of sport you are currently doing and press Enter
• Select Speed Units and press Enter
• Under the Units option press Enter, and then switch between Pace/Speed

Question: Can I load maps on my Edge 205/305?

Answer:
No. The Edge 205 and 305 do not have mapping memory, so there is no way to load detailed maps on these models.

Physical & Performance:
Unit dimensions, WxHxD: 2.1” x 2.7” x 0.7” (5.33×6.86×1.78 cm)
Display size, WxH: 1.3” x 0.8” (3.3×2.0 cm)
Display resolution, WxH: 160×100 pixels
Weight: 2.72 oz (77 g)
Battery: rechargeable lithium-ion
Battery life: 10 hours, typical
Water resistant: yes (IPX7)
GPS-enabled: yes
High-sensitivity receiver: yes
RoHS version available: yes
Maps & Memory:
Basemap: no
Ability to add maps: no
Accepts data cards: no
Lap history: 1000 laps
Waypoints/favorites/locations: 100
Routes: 50
Features:
Heart rate monitor: yes
Bike speed/cadence sensor: yes (some versions)
Foot pod: yes (optional)
Automatic sync (automatically transfers data to your computer): no
Garmin Connect™ compatible (online community where you analyze, categorize and share data): yes
Garmin Training Center® software compatible: yes
Virtual Partner® (train against a digital person): yes
Courses (compete against previous workouts): yes
Auto Pause® (pauses and resumes timer based on speed): yes
Auto Lap® (automatically starts a new lap): yes
Auto Scroll (cycles through data pages during workout): yes
Multi-sport (changes sport mode with a press of a button): yes
Advanced workouts (create custom, goal-oriented workouts): yes
Simple workouts (input time, distance and calorie goals): yes
Pace alert (triggers alarm if you vary from preset pace): yes
Time/distance alert (triggers alarm when you reach goal): yes
Vibration alert: (choose between alert tones and/or vibration alert): no
Interval training (set up exercise and rest intervals): yes
Heart rate-based calorie computation: no
Customizable screen(s): yes
Barometric altimeter: no
Unit-to-unit transfer (shares data wirelessly with similar units): no
Power meter compatible (displays power data from compatible 3rd party ANT+™-enabled power meters): no
Sport watch: no

Features:

GARMIN FORERUNNER 305	GARMIN FORERUNNER 405	GARMIN FORERUNNER 310XT	GARMIN FORERUNNER 405CX
Heart rate: The digital heart rate monitor continuously tracks heart beats per minute	Heart rate: Optional - Add a flexible, wireless heart rate monitor to help you make the most out of your training.	Heart rate: Optional - Add a flexible, wireless heart rate monitor to help you make the most out of your training.	Heart rate: The digital heart rate monitor continuously tracks heart beats per minute
Mode change: Multisport - change to different sport focus with a press of a button		Mode change: Multisport - change to different sport focus with a press of a button
Workouts: Advanced workouts - create custom, goal-oriented workouts Interval training - set up exercise and rest intervals Simple workouts - input time, distance and calorie goals	Workouts: Advanced workouts - create custom, goal-oriented workouts Interval training - set up exercise and rest intervals Simple workouts - input time, distance and calorie goals	Workouts: Advanced workouts - create custom, goal-oriented workouts Interval training - set up exercise and rest intervals	Workouts: Advanced workouts - create custom, goal-oriented workouts Interval training - set up exercise and rest intervals Simple workouts - input time, distance and calorie goals
Alarms: Pace alert - triggers alarm if you vary from preset pace Time/Distance alert - triggers alarm when you reach goal	Alarms: Pace alert - triggers alarm if you vary from preset pace (advanced workout only) Time/Distance alert - triggers alarm when you reach goal (advanced workout only)	Alarms: Pace alert - triggers alarm if you vary from preset pace (advanced workout only) Time/Distance alert - triggers alarm when you reach goal Vibration alert - choose between alert tones and/or vibration alert	Alarms: Pace alert - triggers alarm if you vary from preset pace (advanced workout only) Time/Distance alert - triggers alarm when you reach goal (advanced workout only)
Computer connectivity: Garmin Connect compatible - online community where you analyze, categorize and share data System requirements are Windows 2000 or higher / Intel based Mac running OS 10.4 or later with Safari Garmin Training Center software compatible	Computer connectivity: Garmin Connect compatible - online community where you analyze, categorize and share data System requirements are Windows 2000 or higher / Intel based Mac running OS 10.4 or later with Safari Garmin Training Center software compatible AutoSync - automatically transfers data to your computer Unit to unit transfer - shares data wirelessly with simlar units	Computer connectivity: Garmin Connect compatible - online community where you analyze, categorize and share data System requirements are Windows 2000 or higher / Intel based Mac running OS 10.4 or later with Safari Garmin Training Center software compatible AutoSync - automatically transfers data to your computer ANT+ wireless technology - lets you automatically transfer information back and forth between watcha nd the computer	Computer connectivity: Garmin Connect compatible - online community where you analyze, categorize and share data System requirements are Windows 2000 or higher / Intel based Mac running OS 10.4 or later with Safari Garmin Training Center software compatible AutoSync - automatically transfers data to your computer Unit to unit transfer - shares data wirelessly with simlar units
GPS: Enabled High sensitivity receiver RoHS version available	GPS: Enabled High sensitivity receiver RoHS version available	GPS: Enabled High sensitivity receiver RoHS version available	GPS: Enabled High sensitivity receiver RoHS version available
Running: Virtual Partner - train against a digital person Courses - compete against previous workouts 1000 lap histories 100 waypoint 50 routes Auto Pause - pauses and resumes timer based on speed Auto Lap - automatically starts a new lap Auto Scroll - cycles through data pages during workout OPTIONAL Foot Pod(see accessories on this page) Add the ability to measure speed and distance and runner's cadence when indoors and outdoors	Running: Virtual Partner - train against a digital person Courses - compete against previous workouts 1000 lap histories 100 waypoint Auto Pause - pauses and resumes timer based on speed Auto Lap - automatically starts a new lap Auto Scroll - cycles through data pages during workout OPTIONAL Foot Pod(see accessories on this page) Add the ability to measure speed and distance and runner's cadence when indoors and outdoors	Running: Virtual Partner - train against a digital person Courses - compete against previous workouts 1000 lap histories 100 waypoint Auto Pause - pauses and resumes timer based on speed Auto Lap - automatically starts a new lap Auto Scroll - cycles through data pages during workout OPTIONAL Foot Pod(see accessories on this page) Add the ability to measure speed and distance and runner's cadence when indoors and outdoors	Running: Virtual Partner - train against a digital person Courses - compete against previous workouts 1000 lap histories 100 waypoint Auto Pause - pauses and resumes timer based on speed Auto Lap - automatically starts a new lap Auto Scroll - cycles through data pages during workout OPTIONAL Foot Pod(see accessories on this page) Add the ability to measure speed and distance and runner's cadence when indoors and outdoors
Cycling: OPTIONAL GSC10 (see accessories on this page) Add speed and cadence bike sensor - monitor pedaling cadence and wheel speed	Cycling: OPTIONAL GSC10 (see accessories on this page) Add speed and cadence bike sensor - monitor pedaling cadence and wheel speed	Cycling: OPTIONAL GSC10 (see accessories on this page) Add speed and cadence bike sensor - monitor pedaling cadence and wheel speed	Cycling: OPTIONAL GSC10 (see accessories on this page) Add speed and cadence bike sensor - monitor pedaling cadence and wheel speed
		Calories: Heart rate based calorie computation	Calories: Heart rate based calorie computation
Unit size: 2.1 " wide x 2.7" high x 0.7" deep (5.33cm x 6.86cm x 1.78cm)	Unit size: 1.88 " wide x 2.78" high x 0.646" deep (4.8cm x 7.1cm x 1.6cm)	Unit size: 2.1 " wide x 2.2" high x 0.8" deep (5.4cm x 5.6cm x 1.9cm)	Unit size: 1.88 " wide x 2.78" high x 0.646" deep (4.8cm x 7.1cm x 1.6cm)
Display: Size 1.3" wide x 0.8" high (3.3cm x 2.0cm) Resolution 160 pixel wide x 100 pixels high Customizable screen	Display: Size 1.06" diameter (2.7cm) Resolution 124 pixel wide x 95 pixels high Customizable screen	Display: Size 1.3" wide x 0.8" high (3.3cm x 2.0cm) Resolution 160 pixel wide x 100 pixels high Customizable screen	Display: Size 1.06" diameter (2.7cm) Resolution 124 pixel wide x 95 pixels high Customizable screen
Weight: 2.72 oz. (77 g)	Weight: 2.11 oz. (60 g)	Weight: 2.5 oz. (72 g)	Weight: 2.11 oz. (60 g)
Battery: Rechargeable lithium ion Battery life - up to 10 hours, typically	Battery: Rechargeable lithium ion Battery life - 2 weeks in power save mode; 8 hours in training mode	Battery: Rechargeable lithium ion Battery life - up to 20 hours, typically	Battery: Rechargeable lithium ion Battery life - 2 weeks in power save mode; 8 hours in training mode
	Sports watch: dual time, date, alarm		Sports watch dual time, date, alarm
Water resistant: IPX7	Water resistant: IPX7	Water resistant: up to 50 meters. Although the watch is water resistant, Heart Rate cannot be sent through the water using 2.4GHZ frequency. Just like GPS signals do not work underwater.	Water resistant: IPX7

Forerunner 305
Heart rate monitor
Garmin Training Center® software
Docking cradle
Expander strap
AC charger
USB cable
Owner’s manual
Quick start guide

See features.

Running and Workout Features: 305 310XT 405 405CX 405HR Routes 50 routes X Lap history 1000 laps X X X X X Foot pod opt. opt. opt. opt. opt. Courses - compete against previous workouts X X X X X Auto Pause - pauses and resumes timer based on speed X X X X X Auto Lap - automatically starts a new lap X X X X X Auto Scroll - cycles through data pages during workout X X X X X Mulit-sport - changes sport mode with a press of a button X X Advanced workouts - create custom, goal oriented workouts X X X X X Simple workouts - input time, distance and calorie goals X X X X Pace alert - triggers alarm if you vary from preset pace X Pace alert - triggers alarm if you vary from preset pace for advanced workouts only X X X X Time and distance alert - triggers alarm when you reach goal X X Time and distance alert - triggers alarm when you reach goal for advanced workouts only X X X Vibration alert - choose between alert tones and/or vibration alert X Interval training - set up exercise and rest intervals X X X X X Customizable screen X X X X X Power meter compatible - displays power data from compatible 3rd party ANT+ enabled power meters (records data approx. 1 per second) X Unit to unit transfer - shares data wirelessly with similar units X X X

Cycling and Workout Features: 305 310XT 405 405CX 405HR Bike speed/cadence sensor opt. opt. opt. opt. Bike speed/cadence sensor on some versions X

Heart Rate: 305 310XT 405 405CX 405HR Heart rate monitor X opt. X X Heart rate monitor on some models X Heart rate based calorie computation X X X

Computer connectibility: 305 310XT 405 405CX 405HR Garmin Connect - an online community where you analyze, categorize and share data. Easy uploads, transfer courses and goals, and update setting. X X X X X Garmin Connect compatible with Windows XP or newer and PowerPC and Intel based Mac runing OS 10.4 or later with Safari X X X X Garmin Training Center software - It operates directly on your computer, not on the Internet.Track and analyze your fitness activities and use it to review activity history as well as create workouts and send them to your Garmin fitness device. X X X X X Garmin Training Center compatible with Windows XP or newer and PowerPC and Intel based Mac runing OS 10.4 or later with Safari X X X X Virtual Partner - Train against a digital person. X X X X X Automatic sync - automatically transfers data to your computer X X X X

Maps: 305 310XT 405 405CX 405HR Waypoints/Favorites/Locations 100 X X X X X

Software: 305 310XT 405 405CX 405HR Garmin Training Center software - It operates directly on your computer, not on the Internet.Track and analyze your fitness activities and use it to review activity history as well as create workouts and send them to your Garmin fitness device. works X X X X

Receiver: 305 310XT 405 405CX 405HR High sensitivity X X X X X

GPS: 305 310XT 405 405CX 405HR Enabled X X X X X

Watch: 305 310XT 405 405CX 405HR Time X X X Dual time X X X Date X X X Alarm X X X Extra wrist strap X

Batteries: 305 310XT 405 405CX 405HR Type rechargeable lithium-ion X X X X X Battery life typically hours 10 20 8 8 8 Battery life in power save mode 2 wks. 2 wks. 2 wks.

Water resistance: 305 310XT 405 405CX 405HR Yes IPX7 50m IPX7 IPX7 IPX7

Resolution: 305 310XT 405 405CX 405HR 160 pixels wide x 100 pixels high X X 124 pixels wide x 95 pixels high X X X

Size: 305 310XT 405 405CX 405HR Unit dimensions 2.1 inch wide x 2.7 inches high x 0.7 inch deep (5.33 centimeters wide x 6.86 centimeters high x 1.78 centimeters deep) X Unit dimensions 2.1 inch wide x 2.2 inches high x 0.8 inch deep (5.4 centimeters wide x 5.6 centimeters high x 1.9 centimeters deep) X Unit dimensions 1.88 inch wide x 2.78 inches high x 0.646 inch deep (4.8 centimeters wide x 7.1 centimeters high x 1.6 centimeters deep) X X X Display size 1.3 inch (2.7 centimeters) X X X X X Display size 1.06 inch wide x 0.8 inches high (3.3 centimeters wide x 2.0 centimeters high)

Weight: 305 310XT 405 405CX 405HR 2.72 ounces (77 grams) X 2.5 ounces (72 grams) X 2.11 ounces (60 grams) X X X

RoHS: 305 310XT 405 405CX 405HR Available X X X X X

Manual
An instruction manual is included with your product. click here for a PDF version

Quick Start Guide
An quick start guide is included with your product. click here for a PDF version

Heart Rate Guide
Instructions on how to use the heart rate monitor chest transmitter. click here for a PDF version

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Great product for personal training.