[cwcw]

Nice work. Some suggestions from my personal experience using Strava:

* Most runs are training runs so they carry their purposes instead of full-effort race simulation therefore predications based on training runs are usually a bit off.

* Having said that, Strava supports tagging runs which are races; not sure if the API can expose the tags but it would be useful to do a past race based prediction.

* Other than race time predictions, another area of interest is to evaluate training quality. A Chrome plugin, StravistiX does some of it but I'd like to see more such as using VDOT based on Jack Daniels' running formula which have their meanings in training.

[jerryjeremy]

Great suggestions - thanks!

My thought on the training run piece is that you don't even have to think about which runs or races (or even subsegments of runs/races) are your fastest. Just throw everything into the funnel and out come your race predictions. I'll think about how to use the race tag, because that is available through the API.

Training quality is a big one for me, too (especially with a family). I've actually been working on something similar and much larger than just having race predictions.