You are off to a great start--nice work! Here's my initial impressions:

1. Is this for hiking or climbing? Your homepage text made the target audience/user-base a little unclear. I think you will find that the two communities are unique and strategies to market will differ between the two. Perhaps refine the focus slightly.

2. You will absolutely need to seed this with content. I hit the homepage and had no desire to proceed since I don't see any user generated content.

3. What advantages would I have using Hikify over say Trails.com or the Trailspace forums? I want to share/participate with an existing community. How will you create yours?

Remember, if this gains traction it will be about the community you establish first, and the technology that powers it second.