For Front Range residents, there are any number of ways to reach the trailhead for Mt. Lady Washington. It is the same as the Longs Peak TH and access to Mt. Meeker begins here as well for our suggested route. Probably the most direct route on the Front Range is from Longmont to Lyons, and then west on SH/CO 7 to Allenspark and continuing north to the turnoff on the left for the Longs Peak TH. The turnoff is 10 miles north of the SH7/72 intersection. If coming from Estes Park, the turnoff is 9.2 miles south on SH7 from the SH7/US36 intersection. Drive about a mile to the trailhead parking.
Warning: The trailhead parking is frequently filled to capacity during peak summer season months. Often you will find vehicles parked along the side of the road for a significant distance down from the trailhead. This is especially true on weekends, when even with a 6:00 AM arrival, you may have trouble finding a place to park. So plan on an early arrival.
Overnight camping in vehicles at the trailhead is not permitted. There is a campground close to the trailhead called the Longs Peak CG. It is "first come - first served," tents-only and has about 25 sites. It easily fills daily. Some of the other campgrounds in RMNP have a reservation system. There are also National Forest campgrounds relatively close by such as: Olive Ridge, Camp Dick, and Peaceful Valley which can also be reserved. Try www.reserveamerica.com or check out this link:
https://www.nps.gov/romo/planyourvisit/camping.htm