Kat's half-century bike ride! This ride had a remote start; we parked at the Whittier Narrows Nature Center; 1000 Durfee Avenue; South El Monte, CA 91733-4410 (8AM-5PM, but gates not locked until maybe 7-8PM); (626) 575-5523. We rode from Whittier Narrows to Seal Beach on the San Gabriel River Bike Trail, and had lunch at River's End at 2:50 pm. At 4 pm, we headed north along the beach across Long Beach to the Los Angeles River Bike Trail which we took back, transitioning to the Rio Hondo Bike Trail which took us to the west side of Whittier Narrows. We arrived back at the car at 6:53 pm, a total of just under 4 hours and 20 minutes of peddling at an average of 12.6 mph! Kat was wearing out towards the end, but picked up the pace and rode the last nearly 25 miles at about 13.5 mph, and 13.7 mph for the last 10 miles. My data suggests my average pulse rate was 97 bpm, and total calories expended, 3200. We had about 1000' of elevation gain for the ride.