South Rim-2-Rim three day hike: South Kaibab Trail (4780 ft elevation loss, 6.8 mi) to Bright Angel Campground (2 nights there) and up on Bright Angel Trail (4380 ft elevation gain, 9.3 mi). Some did side hikes: part of Clear Creek Trail (~1400 ft elevation gain, 4 mi), River Trail (1.7 mi). Weather cooperated especially during the hike up with temperatures in the 70s, occasional strong wind and clouds. Temperatures at the bottom were in high 80s to low 90s during the day and low 50s at night.