This ride is not flat at all. It goes through San Elijo hill with over 1580 ft. total climb.
As seen the map, I rode my bike from home to San Marcos Blvd, to Rancho Santa Fe, and at about 4.5 miles I turned into San Elijo Rd. which climbs up the San Elijo hill (see the satellite photo), and at about mile 8 I started descending down until I reached Craven Rd. which I took left to Discovery Rd. back home. The total tour is 11.44 miles and took one hour and 41 minutes as is shown in the statistics on the map. It is quite a workout (927 calories burnt in the effort). The map and its details are taken by the RunKeeper app on my phone.
The satellite photo shows the same map with the details of the San Elijo hill shown clearly. The distance up to mile 4 was more or less flat, but then starting at San Elijo Rd. you see that the road goes up the hill. I looked back while riding the bike and I could see the ocean behind me, a view that most houses on the hill can see. San Elijo Rd. becomes Twin Oaks Rd., and it meets Craven Rd. as you see in the satellite photo. The path from Craven Rd. to S. Bent Avenue is more or less flat, then left on to Discovery Rd. which is also flat. Finally I took the Vera Cruz Rd. back home and that has some climbing in it which provides a nice workout near the end of the exercise. Can you see Lake San Marcos within the trip's loop?
This adventure is similar to my previous post "Coasting the North County Coast" but instead of taking the Coaster train and then walking back from Solana Beach to Encinitas, this time I carried my bike and parked in Encinitas train station and then biked all the way down to Torrey Pines and back. It took less than two hours and the trail was level all the way except between Del Mar and Torrey Pines.
The bike is seen carried on my Honda CRV, and a selfie below shows my bike and I after I arrived to Torrey Pines beach. The distance each way is 7.9 miles taking 55 minutes each way. Most of the path is by the ocean offering wonderful sea breezes and scenery. The third picture shows the beach near Torrey Pines looking back towards Del Mar.
It was a very pleasant experience and I would like to repeat it again and again. I am thinking next time to start from South Carlsbad by parking at the Poinsettia Station and biking from there south to Del Mar and back. This will take longer than two hours both ways but it would be worth the ride because the whole path is on the beach. So for a level ride for about two hours or more this is the perfect route. But for up and down hill rides then you need to go more east towards the mountains. Later on this soon.