Joined: May 2007
Posts: 23,474
Likes: 16,981
From: SF Bay Area
Bikes: Litespeed Ultimate, Ultegra; Canyon Endurace, 105; Battaglin MAX, Chorus; Bianchi 928 Veloce; Ritchey Road Logic, Dura Ace; Cannondale R500 RX100; Schwinn Circuit, Sante; Lotus Supreme, Dura Ace
I have to concentrate really hard to keep putting out enough effort on a trainer to keep my HR above 120 for half an hour. On the road, it's hard to keep my HR below 140, and I can ride for hours.
So, if you expend the same effort, it should be the same Calories. But good luck expending the same effort!!!
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