Big, HUGE 2nd for the Couch to 5K plan... even if you have a good cardio base from cycling. Your skeleton needs to get used to the impact from running (and this takes time) or you'll set yourself up for an injury.

I came into triathlon with a background in swimming only. Had to learn the whole running/cycling part and for running, I chose the Couch to 5K plan. Since then, my best friend and my husband have completed the plan and both have gone on to become terrific triathletes. I am a FIRM believer that anyone can build up to running using this plan.

I'll also let you in on a little secret... I've turned into a pretty decent runner (especially at stand-alone races) but there are still times that I follow the whole walk/run process in training... especially on really hot days when cardiac drift is very noticable. Walk/run is just a SAFE way to approach running in the early stages of base building for new runners AND as a way to safely get through hard training sessions for those who have been running a while.

You can totally do this!!!