Another interesting thing (to me anyway as I don't have the info on my basic cycle computer) is that Strava gives me the actual gradient of the various places I go.
There are some very short and steep "walls" dotted all over the place in my area and I like to have a go at them from time to time. However, some of these "walls", given the Strava figures, can't be considered walls at all really, just quite steep.
One particular 200 metre section I ride up quite frequently, the steepest one I do, I estimated that it must be over 20% gradient. The Strava data puts it at about 17%. Still a fair old climb but watching the vuelta the other day on the Angliru, really gives you a good perspective on what the climbs the pros are dealing with, real "walls". I think 23% gradient was mentioned on the steepest part of that beast. Ouch!
I can't comment on the accuracy or otherwise of Strava gradients. As you're a new user you probably aren't aware that how some of these software packages and hardware define as climbs is a bit of a mystery. See my example below.
I recently went on 63 mile, 4400 feet with a friend. She likes to have the route on her top of the range Garmin. She also likes to switch on all the information stuff, climbs, gradients etc. I sent her the route with the comment there are four climbs.
We set off, after two climbs I commented on the lines of "two down, two to go". My buddy said "my Garmin says there are 11 climbs on the ride, 9 to do". I listed the climbs and conceded the 5/6% 0.3 mile section about 1 mile from home is a climb, after 60 miles it's harsh ( on the ride my time was 5:35, my PB is 2:50). During the ride my companion shouted the climbs the Garmin was showing. Well!! 1.5 miles/3.5% with one short 100 yard kick, 1.6.2.8%, 0.7/3.4%, 0.7/2.8% and so on. I'm not a fantastic climber, when go on a hilly/rolling ride this is what we expect to encounter.
I don't understand software packages define a climb, it doesn't match my idea of one. You're over Bacup way. I'd say the Bacup road out of Todmorden towards Bacup is a climb or the climbs around Barley, Roughlee, Downham, The Nick, the road up to the Singing Ringing Tree, etc. Those are climbs, absolute buggers to get up.