Hey, this is a new feature... We know that there are issues with some of these charts. You may see some big spikes in the middle of some of the charts (phantom hills - we call them) and things like that. We'll be cleaning these up over the next week - looking through each chart, perfecting each one. Until then, take these as good representations of the overall elevation for an event - and actually, they're not too bad, but they'll get even better!
San Antonio Marathon-Marathon of the Americas - Elevation Chart Chart from 2005 race. Course and Elevation for other years may be different.
Starting Elevation: 660 ft. | Ending Elevation: 661 ft.
Minimum Elevation: 640 ft. | Maximum Elevation: 693 ft.
Note: Elevation change is minimal. Chart may tend to overemphasize hills. Pay attention to vertical scale of chart.