>Cross Training>What would be more accurate?
Run like a kid again!
I've got a fever...
On your deathbed, you won't wish that you'd spent more time at the office. But you will wish that you'd spent more time running. Because if you had, you wouldn't be on your deathbed.
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A Saucy Wench
I agree that the bike computer would be more accurate. However, you also mention you already have a Garmin... the Garmin isn't so inaccurate I'd buy another computer.
What I have noticed, though,is that reading a Garmin on my wrist is inevitably a little bit more difficult than reading things like speed and distance on the bike computer, so that's something to keep in mind.
As far as cadence goes, I've always felt a decent rider can get a feel of this rather quick, so I wouldn't obsess about it.
I have become Death, the destroyer of electronic gadgets
"When I got too tired to run anymore I just pretended I wasnt tired and kept running anyway" - dd, age 7
TRIing to beat the heat!
Sub-1:42 for half marathon √ (1:41 at Disney, Jan '12)
Sub-22 for 5k √ (21:51 in Sept '12)
BQ for marathon- FAIL