This will be a straightforward post, so, this is in La Plata, in Argentina.
Track surface: Dirt
Track Circumference: 2050m
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Since there is no chute in the far turn the sprints are run at least at 1100m and not less, since that involves starting in the turn itself. Also, there are no races between 1700m and 2100m. Which are, indeed, not-so-common distances.