Below is the course table posted by the organizers..
[Gran Fondo]

For the GPX file of the course, please refer to the file the organizers posted on the event homepage.
Below, I drew the course myself on Strava in order to get accurate information on each climb.
[Gran Fondo]

And I looked around the climbs on the course that are worth noting.
1) Dosirakjae west side
- Starts about 12.59km after the start
- Length 3.20km, average gradient 3.4%
* It qualifies as Cat.4 under the UCI climb standard. (3.20*1000*3.4=10,880)
* It corresponds to 6★ on my own climb scale.

2) Geureutgogae west side
- Starts about 19.57km after the start
- Length 0.71km, average gradient 5.6%
* It does not qualify for any Category under the UCI climb standard. (0.71*1000*5.6=3,976)
* It corresponds to 5★ on my own climb scale.

3) Teokgeorigogae west side
- Starts about 36.9km after the start
- Length 1.50km, average gradient 6.8%
* It qualifies as Cat.4 under the UCI climb standard. (1.50*1000*6.8=10,200)
* It corresponds to 7★ on my own climb scale.

4) Geonjisan
- Starts about 43.4km after the start
- Length 0.72km, average gradient 7.5%
* It does not qualify for any Category under the UCI climb standard. (0.72*1000*7.5=5,400)
* It corresponds to 7★ on my own climb scale.

5) Jeonyanggogae east side
- Starts about 63.1km after the start
- Length 0.65km, average gradient 7.4%
* It does not qualify for any Category under the UCI climb standard. (0.65*1000*7.4=4,810)
* It corresponds to 7★ on my own climb scale.

6) Geumuigogae
- Starts about 65.84km after the start
- Length 0.28km, average gradient 13.9%
* It does not qualify for any Category under the UCI climb standard. (0.28*1000*13.9=3,892)
* It corresponds to 13★ on my own climb scale.

7) Danggogae
- Starts about 81.3km after the start
- Length 0.53km, average gradient 8.9%
* It does not qualify for any Category under the UCI climb standard. (0.53*1000*8.9=4,717)
* It corresponds to 8★ on my own climb scale.

※ Danggogae and Gogiljae (Gogilgogae) are joined together as a two-stage combo and form the KOM section of the event.
8) Gogiljae (Gogilgogae)
- Starts about 82.35km after the start
- Length 0.65km, average gradient 12.8%
* It qualifies as Cat.4 under the UCI climb standard. (0.65*1000*12.8=8,320)
* It corresponds to 12★ on my own climb scale.

※ Danggogae + Gogilgogae two-stage combo: the event's KOM section

For the Gran Fondo above, these 8 climbs are the main ones.
For detailed information on the climbs, please refer to the content at the link below.
In particular, I have built an app that lets you easily look up information on 750 well-known climbs across the country.
If you save it as a bookmark or put a shortcut on your home screen, you can easily look up a climb's distance, average gradient, elevation gain, start point, finish point and so on from your phone anytime, anywhere.
https://blog.naver.com/scvhwan/224368896739
※ Information on supply points during a course recon (convenience stores)
https://blog.naver.com/scvhwan/224369945720
The text above is content I keep posting on my blog, and since it seems many people here are taking part in the Gran Fondo, I am sharing it.
I hope everyone taking part finishes safely without accidents.
