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| | Going for the long run |
 | | So while ultra runs might be two or more times longer than a marathon (there's not a standard ultra distance, although 100 miles, 100 kilometers, 50 miles and 50 kilometers are popular), ultra runners say they're actually easier on your body. |
 | | Because the races take so long, many participants, who tend to be older than the crowds drawn to most 5K and 10K runs, walk the uphills and jog the downhills and flats. |
 | | They compare notes on runs they've finished, gush about the plush comfort of running on pine-needle covered trails, share their fears of doing their first 50-miler or 100-miler. |
| www.azcentral.com /health/fitness/articles/1223longrun-ON.html (1359 words) |
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