This is an absolute gem, which is amazingly steep and goes on forever. Expect lots of super sharp hairpins - you will be out of the saddle for most of this climb, with bursting lungs as well! Even when it’s all over there is another steep section to get to the actual summit. Best climbed after a hard Alpine col holiday of at least two weeks to get your legs and mind strong enough for the challenge. Try to be assertive with traffic; if you stop you’ll never get going again. You can continue westwards along a very remote track if you wish and then loop back round to Penmorfa/Tremadog. Or descend and do it again faster?
Conditions: The highest point of the road is 240m and the coast is nearby; consequently it would be a rare (but not unheard of) event for this road to be blocked with snow.
Approach: The common starting point is Tremadog but Beddgelert is an obvious alternative option.