11th edition – Sunday, March 17th, 2024, 6:00

Results 2023Rules

What distance can you cover for 2, 3, 6 or … 12 hours?

Spring360 is the first city ultra marathon in Bulgaria and first time constrained running competition.

Participants compete who will run longer distance in the given period of time. The lap is 649 m in The South Park of Sofia.

We celebrate Spring since 2014.


Team of three

Make a team of 3 and run 2 hours each. Start at noon.

Team of two

Convince a friend and run 3 hours each. Start at noon.

Solo 6 hours

The classic race for ultra runners. Start at 6 AM and finish at noon.

Solo 12 hours

Since 2017 we’ve added longer distance. For serious ultra runners. Start at 6:00 am, finish at 18 PM.


Laps on the Large Meadow in the South Park. The lap allows to see all the competitors and at the same time to have a support station each 650 m. The course is flat. We are proud that during all the years of the event none of the competitors got lost.

Participations Fees

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