Rent bikes in town or bring your own. If you don’t have a bike or don’t love biking, you can just go for a walk or jog. The path is stroller and wheelchair friendly.
There is one steep hill to get to the trail, but other than that it is smooth sailing on a nice, paved path. Dallas can be very hot in the summer, so if you go between June and September, bring lots of water and sunscreen. There aren't any places to buy food or drinks, so if you think you'll need a snack bring that too.
Any time of day is fine, although mornings and late afternoons might be best as there is no shade. Always check the weather forecast.
The trail is open year round, but summer can get hot. We went in late morning in June and did fine, but it did get a little hot.