Climbing a mountain vs long distance bike for losing weight?

[Quantumphysics]

Both are cardio. Mountain is about 338meter and the bike is about 20km.
Which is better for losing weight?

 

[mug]

The best thing for losing weight is eating less and the activity tha burns more calories will lose more… but do what you think is fun and focus on diet

 

[AlexBrown84]

Do Both

 

[aBetterMii]

Do mountain biking