I am training for a marathon and have been running between 35 and 40 miles a week. Recently, I developed a pain in my outer right hip that bothers me when I put weight on that side either walking or running. The pain seems to go away when I directly press on the area with my hand. The pain has been going on for about two weeks. I'm not sure what other information might be helpful, but I'm hoping you may be able to help me.
Gray, you are describing pain that is most likely a trochanteric bursitis that is developing. Typically, the pain begins as you descibe, then progresses to a more severe pain that you cannot easily relieve with pressure. Often the pain radiates down the leg, and becomes an ITB strain on top of the bursitis. In either event, the onset is biomechanical. You need to both stretch the ITB, and wear orthotics for relief.
The Greater Trochanter is the large hip bone, and the bursa, a sack of fluid that allows the ITB to glide over the boney prominance. When it gets irritiated, the bursa is very painfull, and hard to settle down. If you have hgigh arch or flat feet, the femur has to travel further with each stride (in the frontal and transverse plane), so the ITB places more pressure on teh structure, leading to the bursitis. Orthotics will help this biomechanical problem, but in the meantime, you have to lengthen the now shortened ITB. Stretches that help this are stretches that you feel on the outside of your thigh at the hip. Try several different stretches because the fibers travel in many different directions, and all need to be stretched and hydrated.
Also, pay attention to the side of the road you run on. One fellow I worked with discovered that if he ran on the other side of the road, the problem went away due to the angle of the road, and the impact on his biomechanics. Good luck.