324th ACTIVITY RECORDED WITH GARMIN EDGE 1000 AT https://connect.garmin.com/modern/activity/2673892930; ALSO RECORDED WITH GARMIN EDGE 705 AT https://connect.garmin.com/modern/activity/2675870493. For the INTENDED route, see https://ridewithgps.com/routes/24358214, BUT NOTE THAT THIS RIDE INCLUDED: 1) TWO UP-&-BACKS TO FERN’S HOUSE; 2) TURNAROUND AT CROWN VALLEY PKWY AFTER JK BENT BOTH WHEELS BY HITTING A ROCK AT 48 MPH; 3) EXTRA CREDIT DOWN-&-BACK ON COAST HWY NEAR THE END OF THE RIDE TO GET TO 100 TOTAL MILES. Similar to 02-17-18 at https://connect.garmin.com/modern/activity/2504833706, EXCEPT FOR THE CHANGES NOTED ABOVE. Fern Kissel (miles 12.9–82.5) & JK. Park/start/finish at Carlsbad/Poinsettia Coaster Station, 6511 Avenida Encinas, Carlsbad, CA 92009 (see https://goo.gl/maps/GVV8HcBXeVB2 ). Lap 1: South from Carlsbad-Poinsettia Station, N along the coast to Oceanside Harbor and east to Fern’s house to meet her. North through Camp Pendleton & into San Clemente. “Extra credit” down-&-back to San Clemente State Beach for ~1 mile/100' ascent, then continued N through San Clemente residential tract. North on El Camino Real, then “extra credit” E & N on Camino Capistrano for additional ~0.75 mile/150' ascent, & SW down Palisades Dr to/through Doheny Beach. NE up Street Of The Golden Lantern, N on Pacific Coast Hwy, up Crown Valley Pkwy & Pacific Island Dr (adds 5 miles/870' ascent), & back down Pacific Island Dr WHERE I GLANCED AT MY 48.5 MPH DOWNHILL SPEED & SIMULTANEOUSLY RAN OVER A ROCK? (ROCKS?) SO HARD THAT THE FRONT TIRE BLEW OUT & BOTH WHEELS WERE SIGNIFICANTLY DAMAGED. EVEN WITH THE TOTALLY FLAT FRONT TIRE, I COULDN’T GET THE BIKE TO STOP UNTIL I GOT TO THE BOTTOM OF THE HILL AT CROWN VALLEY PKWY. I changed the front tube (the front tire showed no sign of damage!). The back wheel was so bent that it wouldn’t rotate until I opened the brakes & backed out the cable, leaving the rear brakes only marginally usable. When we tried to roll, the front brake was making a loud, rhythmic “BAM” whenever applied, so we stopped again & discovered that the front wheel was so damaged that when the front brake was even minimally applied, a bulge in the wheel would bang into the brake shoe every rotation, making the front brake unusable. We decided to turn south & head back, instead of continuing north to Laguna Beach Subway as originally planned. Lap 2: South along the coast where Fern was stung by a bee in San Clemente, then had a near head-on collision with an inattentive rider on Old Pacific Hwy (!). We survived to continue south through Camp Pendleton and east to Fern’s house; then I headed back to the coast & added a little “extra credit” south on Coast Hwy to a u-turn at Captain Keno’s near Encinitas Blvd., in order to extend the ride to 100 miles. All’s well that ends well (until I had to pay the bill for a new set of wheels the next day).