Runners will cross a special ruler near the Rīga State Gymnasium No. 2 that will accumulate kinetic energy and convert it into kilowatt-hours to find out the amount of energy generated by all participants.
The marathon will take place on May 6 and 7.
There is a choice of the classic marathon, half-marathon, 10 km, 5 km, and a mile race.
More information and registration is available on the official website.
