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.
Races
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.
Route

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
Super Early Bird
till 04.09.2023- Present
- Finisher Medal
- Personalized Number
- Medical Services on spot
- Closed course
- Free pizza for finishers
- *Fee 98/147 for teams оf 2/3
Early bird
till 13.11.2023- Present
- Finisher Medal
- Personalized Number
- Medical Services on spot
- Closed course
- Free pizza for finishers
- *Fee 118/177 for teams оf 2/3
Standard
till 11.12.2023- Present
- Finisher Medal
- Personalized Number
- Medical Services on spot
- Closed course
- Free pizza for finishers
- *Fee 138/207 for teams оf 2/3
Late
till 29.01.2024- Present
- Finisher Medal
- Personalized Number
- Medical Services on spot
- Closed course
- Free pizza for finishers
- *Fee 158/237 for teams оf 2/3
Super Late
till 26.02.24- Present
- Finisher Medal
- Personalized Number
- Medical Services on spot
- Closed course
- Free pizza for finishers
- *Fee 179/267 for teams of 2/3
LAST Train
- Present
- Finisher Medal
- Personalized Number
- Medical Services on spot
- Closed course
- Free pizza for finishers
- *Fee 238/357 for teams of 2/3