I use
http://www.rungps.net/ for windows mobile, yeah I know it's old phone OS, and I still like it.
Only uses data if you want map to follow you, otherwise, it tracks time/distance without data
my sister has a garmin watch that she likes, but I prefer my phone... so I can bring music and if I get hit by car, call for help.
which os do you use? There's lots of free ones that provide distance/time that uses gps/clock only. no data needed unless you wanted other features