The nice people at Trail Runner post their older issues online so you can flip through just like the actual magazine. (They also provide passwords for new issues to subscribers as an added bonus to the print version.) Go to www.trailrunnermag.com and click the Free Digital Editions link to take a browse.
On a related note, congrats to Taylor Murphy for making the cover of this year's Trail Runner Trophy Series Race Edition! It's a great shot of Taylor taken at 5 Peaks Kingston, and can be found inside the June issue (as well as given out at the Trophy Series races).