The fast 5k route, mostly flat with a slight incline, begins and ends on Dovercourt promenade. It winds through Harwich and Cliff park, offering good potential for personal bests. The Harwich 5k series includes a timed handicap, adjusted by a secret algorithm after each race to ensure fair and fun competition. It suits runners targeting a new best, from sub-14 to 40-minute finishers. Tea, coffee, and cake will be served post-race.