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VirtuSlo 4Endurance League 2025

VirtuSlo 4Endurance League is a race series with 6 races over a 6 week period.
Races will be held on Sunday from 9th November 2025 till 14th December 2025.

Zone 1: 10:00 CET / 09:00 UTC
Zone 2: 18:05 CET / 17:05 UTC

 

PRIZES

Pre-Registration for PRIZES required for Slovenia, Italy, Croatia, Germany, Austria, United Kingdom, Spain, France, Portugal and European Union

LEAGUE SCHEDULE

* Stage 1 and 2 – Single Pen Mass Start (*Pen A League Points)
Stage 1: 09.Nov’25 – France, Gentil 8 – 2 Laps (49.0km – 502m)
Stage 2: 16.Nov’25 – Greater London Loop Reverse – 2 Laps (41.4km – 511m)
* The Organizing Committee will manually edit results for Stage 1 and 2 and assign racers into lowest PEN possible for Stage 3.
* Stage 3 to 6 – Staggered PEN Starts +2min
Stage 3: 23.Nov’25 – Watopia’s Waistband – 2 Laps (53.2km – 196m)
Stage 4: 30.Nov’25 – Makuri, Shisa Shakedown – 1 Lap (53.5km – 556m)
Stage 5: 07.Dec’25 – Watopia, ZG25 Queen – 1 Lap (44.8km – 894m)
Stage 6: 14.Dec’25 – Watopia, The Big Ring – 1 Lap (51.1km – 274m)

PEN -> Max Score

A / (TBD after Stage 2)
B / (TBD after Stage 2)
C / (TBD after Stage 2)
D / (TBD after Stage 2)
E / (TBD after Stage 2)

– You may increase your Zwift Racing Score up to 30-points over the PEN Range as a result of the race and your race will stand. If you breach PEN Range Limits by >30-points, then it is likely you didn’t have a maximal 5-minute effort in your 90-day history and you will be upgraded to the correct PEN.
– During the League riders starting in the lower PEN than in any of the previous Stages will be upgraded.
* Upgrades will include Time Penalty (example: Pen C to B is +1min, Pen D to B is +2min).

 

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).
  • To score points rider must finish the stage and be listed in Zwiftpower results.
  • Riders daily finishing rank translates into League Points.
  • Riders Highest Category during the 4Endurance League will be taken for the Overall Category Points Classification.
  • Zwiftpower VirtuSlo 4Endurance League 2025 will show unofficial General Classification with 10 ZRS Sub Categories.

 

LEAGUE Points

Pen  A 200 196 193 191 190 189 188 187 186 185 … 1pt
Pen B 175 171 168 166 165 164 163 162 161 160 … 1pt
Pen C 150 146 143 141 140 139 138 137 136 135 … 1pt
Pen D 125 121 118 116 115 114 113 112 111 110 … 1pt
Pen E 100 96 93 91 90 89 88 87 86 85 … 1pt

 

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
  • Neutralized Bikes and Wheels
  • No TT Bikes
  • Minimum Trainer Difficulty 30%
  • Participants must be registered on zwiftpower.com to be included in the results
  • Smart trainer or Power Meter 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

 

Zwiftpower results: questions, complaints, etc., please contact us at virtuslocc@gmail.com

 

Zwiftpower Disqualifcation Codes

WKG : Exceeded category power limits (95% of 20mins)
UPG : Please upgrade; rider has proven ability to race in higher category
ZP : Zpower sources of power data prohibited in this category/finishing position
HR : Heart rate monitor required in this category/finishing position
DUAL : No dual uploaded or not set as public
ZRVG : ZADA disqualification
5W : 5-minute power exceeded 6 w/kg without ZADA approval
REGN : Unregistered rider, would have originally finished in Nth place if not disqualfieid
15S  Exceeded 15-second w/kg limit
DQ : Disqualified for other reason (see note, or contact organizers)

Important note: We are 100% dependent on Zwiftpower monitoring and their statistical service.