Summary: I bought this unit primarily to use on hiking trails but found that its GPS is not well suited to that task. Seems like it might be handy otherwise although I found it a bit hard to navigate and it didn't seem able to calucalte the calories which was my number 2 priority. I suggest calling the manufacturer first to discuss your needs as the specs don't really address this issue. When calling Garmin, be prepared to wait at least 1/2 hour for service.
Summary: I already own the 205 version and bought the 305 for the heart monitor... very happy with it except for one thing... It does not display the speed in the diplay window... just the pace/mile ... No speed to be found on the watch at all (though the 205 has it... now i have to convert or get used to run by pace...: If not for that, it's an excellent gps watch... would buy it again :) UPDATE: This watch died in 2012... Bought the 310xt with HR monitor...
Good to improve technique , not a must have though
5 March 2011
Excerpt: I seem to kick the trend here in that I don't really run, i've been jogging maybe twice in the last year. I bought the garmin based on reviews on dooyoo hoping to get a bit fit for the summer holidays. A fortnight in and im sad to say I've given up already, but at no fault of the garmin. If anything it was the only reason I went out in the first place My first impression was that the, well, "watch" I suppose was pretty huge on my wrist.