Went here for a walk, park near outlet. Walk about 5 miles to reach Virginia border and headed back. Trail is good for walk definitely recommended walking accompanied and during daytime. No fee to use great view of harbor, Potomac River.

We parked at the Tanger outlets and rented the bikes from the Capital Bikeshare. The entrance to the trail is right there and was a good ride (2.5 miles) to the bikeshare right on the other side of the bridge (Mt Vernon Trail & S Washington). We finished right about 30 minutes, so that first ride was just $2. After a break in the shade (It was in the 90s and HOT), we rented the bikes again and went back over the bridge and to National Harbor. The return trip had more uphill getting over the bridge but not too bad. That trip was 1.8 miles and we rode around the waterfront a little, all within the 30 minute ride (another $2). We found some rare shade to cool off and rest. Then we rented the bikes for the last trip from National Harbor Carousel back to Tanger Outlets where we started. While this was only 1.1 miles, it is almost all uphill, so it is moderately strenuous. It took me 14 minutes and my wife about 20 minutes. The bikes were a great option for a hot day to cover more ground quicker and with some breeze from riding. There are lots of information plaques along the Woodrow Wilson Bridge Trail and many of the plants and bushes are labeled nicely. There isn't all that much shade anywhere along the route, however. Overall, a fantastic, low-cost adventure.