Can transmit 20Mbps LVDS signal over 200 meters long using CLC001+CLC014?

As far as I can see, the CLC014 is no longer sold. (Replacements like the LMH0074 also have a minimum frequency, because they are designed for SMPTE.)

Consider increasing the frequency (e.g., times eight) by XORing the signal with a 80 MHz clock, or some other encoding.

There is an older application report, Comparing Bus Solutions (SLLA067). Have a look at figure 1:

So for 20 Mbps over 200 m, I'd think of RS-422/RS-485.

However, this combination of speed and distance might go beyond the physical limits; the THVD1450/SN65HVD78 datasheets say (200 m ≈ 650 ft):

And RS-485 transceiver chips use single-ended signals; to convert from/to LVDS, you need to add receivers/transmitters like the DS90LT012A/DS90LV011A.