For what it's worth - last time I used runkeeper for a long ride I turned off bluetooth, 3G and also turned off any push notifications & fetching of email data. It lasted about 6 ish hours (on my aging 3GS).
I think the same would be true of any similar tracking apps - endomondo, iMap My Ride etc...
#7671624, By Milk The cycling thread
Milk 2,253 posts
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