SAVE $50 : As of May 1, the Garmin Forerunner 165 is on sale for $199.99 at Amazon. That's a 20% discount on the list price. $199.99 at Amazon $249.99 Save $50 If watching the recent London and Boston marathons has inspired you to take up running, we get it. There’s nothing like watching world records to put a spring in your step. And if you’re looking for a fitness tracker to accompany your training, Amazon has a great deal on the Garmin Forerunner 165 live right now. Garmin’s Forerunner range is built for runners. You’ll get detailed performance stats and guided training features. And the 165 is an excellent choice, especially now that it's under $200. As of May 1, this smartwatch is down from $249.99 to $199.99, saving you $50. Mashable Deals By signing up, you agree to receive recurring automated SMS marketing messages from Mashable Deals at the number provided. Msg and data rates may apply. Up to 2 messages/day. Reply STOP to opt out, HELP for help. Consent is not a condition of purchase.…