I did the c25k three years ago and have been doing about 6-10 miles a week on and off since, sometimes more off than on! So far I've used various phone apps - which start out great and then stop working effectively so it's time to move on, especially since I've accepted a BIG challenge ... the Chester marathon in October! So that's just over 6 months to get match fit. I've got a plan but need some reliable way of tracking my progress. I'm thinking of an entry level Garmin but interested in what others would recommend please.