I always love hearing people reminisce about Polaris. I have so many fond memories of that event too; like the sub-zero temps in Galloway Forest.
Returning to the OPs question, while keeping the Polaris theme …
The OMM now run the Polaris events (they took over Polaris a few years ago – it’s now called OMM Bike). They are well set up and run. Turn out is good, but not as big as the old days. They have varied the format from time to time, sometimes running it as a “full Polaris” other times as a “return to HQ” format. I’d say that the course design is better than in the early days of Polaris – There are more check-points and fewer outliers for big points.
This Spring OMM Bike (25-26 April) it’s being run as a “return to HQ” format with long and short course options (basically more or less time). The event HQ will be in Bamford in the Peak District.
OP, if you’ve not done an event like this before the short course would give you a great introduction. It’s also a nice excuse to come and ride in the Peaks 🙂