For those of you who only visit White Rock Lake on a lazy Sunday afternoon, this may come as a bit of a surprise, but the most crowded the park ever gets is at six in the morning every day, except during our four-week winter. That's when the Dallas' marathon training groups flock to the park to beat the summer heat or just work out before work. Serious-looking cyclists, often in ravenous packs of 30 to 40 riders, also hit the lake, making the 9.3-mile loop their own personal Tour de France. On weekends, you'll even encounter traffic jams at the park's entrances before the sun has started to rise and a road race or two along the lake shortly thereafter. It's a strangely fascinating sight to see that many people working out furiously so early in the morning, but then again, where else are they going to go? Maybe if we had a park along the Trinity, say without a toll road?