I travel quite a bit in my job. Sometimes I will go to a plant and find they have facilities where I can stick with my normal routine and run at lunch and the ride later that evening. But sometimes that just doesn't seem to work out. Last week was one of those weeks. I'm just one of those people who really does not like to get out of bed before dawn to workout, race yes, train no. As a result, I take advantage of those weeks to do some bricks. I did a reverse brick (run- bike), and standard brick (bike-run) using a hilly out and back course on road near the hotel and a ride on the exercise bike in the hotel. Then I threw in a decathlon brick (run-bike-run) on the machines. Once I got back home I kept my brick week going by doing some biking in the morning then doing a Run-swim brick about an hour later.
Obviously the run-Bike and run-bike -run mimic what you experience in a race and pays direct dividends but the reverse brick is a great opportunity to get your legs used to pacing while your are tired and training for that late race biking. But the one I enjoy the most the run-swim, I think pays a ton of dividend. Normally during the swim you are fresh, but with one of these brick you enter the water tired and it forces you to concentrate on form and staying smooth and getting used to the later stages of a HIM or IM swim.
Each night a good water bottle of EFS during the middle of the workout and a waterbottle of UltraGen with in 30 min of the end and my legs feel great the next morning. Stay flexible, stay thirsty, and have fun.