Garmin Forerunner245 vs. 645

Forerunner 245

Retail: $300-350

A newer model and all-around solid watch for more serious runners.

Reasons to Pick the FR245

LONGER BATTERY LIFE

The 245 has 24 hrs of battery life on GPS vs. the 14 hrs of the 645.

PACEPRO

Creates a pacing plan for your races and runs, based on elevation and goal time.

Forerunner 645

Retail: $400-450

An older but higher-end model with more tracking profiles and an altimeter. Greatly discounted on 3rd-party retail sites.

Reasons to Pick the FR645

GARMIN PAY

Make contactless payments using your watch.

MORE ACTIVITIES

Also tracks Skiing, Snowboarding, XC Skiing, Paddleboarding, Rowing, Stairs Climbed. 

Learn more in  my in-depth comparison.