VirtuSlo 4Endurance League is a race series with 6 races over a 6 week period.
Races will be held on Sunday from 8th November 2026 till 13th December 2026.
- Zone 1 at 10:00 CET / 09:00 UTC
- Zone 2 at 18:05 CET / 17:05 UTC

REGISTRATION and more info at https://www.virtuslo.racing/Opens a new window

PRIZES by 4Endurance for Registered riders residents of European Union and UK .

LEAGUE SCHEDULE
Stage 1: 08.Nov’26
GELS - Greatest London Loop Reverse - 2 Laps (51.5km - 710m)
BARS - Greatest London Loop Reverse - 1 Lap (25.8km - 355m)
*Mass Start with GELS - PEN A and BARS - PEN B
Stage 2: 15.Nov’26
GELS - Watopia, Itza Party - 1 Lap (46.2km - 507m)
BARS - Watopia, Itza Party - 1 Lap (46.2km - 507m)
Stage 3: 22.Nov’26
GELS - New York, Watts the Limit - 2 Laps (60.5km - 419m)
BARS - New York, Watts the Limit - 1 Lap (31.0km - 219m)
Stage 4: 29.Nov’26
GELS - France, Roule Ma Poule - 2 Laps (48.9km - 418m)
BARS - France, Roule Ma Poule - 1 Lap (26km - 263m)
Stage 5: 06.Dec’26
GELS - Watopia, Coast Crusher - 1 Lap (42.7km - 211m)
BARS - Watopia, Coast Crusher - 1 Lap (42.7km - 211m)
Stage 6: 13.Dec’26
GELS - Paris, Double Espresso - 2 Laps (64.2km - 453m)
BARS - Paris, Double Espresso - 1 Lap (33.7km - 232m)

LEAGUE CLASSIFICATION
- The winner of the day is rider First Across the Finish Line.
- The winner overall in the category will be the one with the highest cumulative score of 5 best races out of 6 (worst result will be deleted after week 3). Results at https://www.virtuslo.racing/Opens a new window
- To score points, riders must finish the stage and be listed in zwiftpower.com results.
- Riders Highest Category during the 4Endurance League will be taken for the Overall Category Points Classification.
- Zwiftpower VirtuSlo 4Endurance League will show unofficial General Classification.

MANDATORY REQUIREMENTS
- Zwift Activities must be saved PUBLIC for verification.
- World Tour Level Performances above the limits stated below must be supported by DUAL POWER Recordings uploaded to Zwiftpower and with margin off error of less than 4%. Outside KOM efforts on Strava can be used for verification of Dual Power analysis.
*MEN: above 4.8W/kg or 350W for 20min, 5.5W/kg or 425W for 5min, 9W/kg for 1min.
**WOMEN: above 4.5W/kg or 280W for 20min, 5W/kg or 325w for 5min, 7.5W/kg for 1min.

RULES AND RACE Settings
- No Powerups
- No TT Bikes
- Minimum Trainer Difficulty 30% (NO ERG)
- Participants must be registered on zwiftpower.com to be included in the results
- Smart trainer or Power Meter with Cadence sensor Paired is required.
- Heart Rate Monitor required.
- No Indoor Bikes without Controlled Resistance (Cadence=Power)
- Sticky Watts or unusual pedalling technique to get an unrealistic advantage will result in DQ
- The organizer reserves the right to disqualify a participant for any other justified reason.

Code of Conduct
- We expect the best racing behavior from all riders, if riders have an issue then always contact race control via email first, we will investigate every request raised.
- In a race we do not expect riders to abuse others, flag, report to race control, screen shot etc.... riders who ignore this will be DQ'd for the series
- Discord chat remains objective and banter - anything more will be removed and warnings/bans will be issued.

Zwiftpower results: questions, complaints, etc., please contact us https://www.virtuslo.racing/Opens a new window
- Any complaints must be submitted within 24 hours of the start of the race.
- Official results will be published by Wednesday of the respective week.
- No result corrections will be accepted after publication of Official Results.

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