Short XXS trails 2027: less than 25 km-effort
95 races in 2027 are less than 25 km-effort. Each with its date, country, elevation gain/km, cut-off time and minimum speed required.
Widest cut-off times in XXS
The widest cut-off requires a minimum speed of 1.0 km/h: mozart 100 - mozart Lake Trail.
- mozart 100 - mozart Lake Trail : 1.0 km/h (12 km in 12 h)
- S1 Trail - La Corsa Della Bora - S1 Family Hike & S1 Karst Trail : 1.6 km/h (14 km in 9 h)
- La Voglanaise : 1.9 km/h (15 km in 7 h 45)
- Transgrancanaria - Promo : 2.0 km/h (12 km in 6 h)
- Stoos-Trail - ST10 : 2.1 km/h (10 km in 5 h)
Most rolling races in XXS
The most rolling climbs only 7 m per km: Istria 100 - 21K.
- Istria 100 - 21K : 7 m/km (155 m elevation gain over 22 km)
- Ultra Trail des Vallees - La Course du Mesnil 18 Km : 8 m/km (150 m elevation gain over 18 km)
- Tarawera Ultra-Trail - T14 : 9 m/km (127 m elevation gain over 14 km)
- Hunsbuckel-Trail - ShortTrail : 11 m/km (135 m elevation gain over 12 km)
- Trail Alsace - Ronde des Pages : 14 m/km (252 m elevation gain over 18 km)
Steepest races in XXS
The steepest climbs 72 m per km: Transgrancanaria - Promo.
- Transgrancanaria - Promo : 72 m/km (869 m elevation gain over 12 km)
- Montreux Trail Festival - Freddie's Family : 70 m/km (902 m elevation gain over 13 km)
- Montreux Trail Festival - Freddie's Day : 68 m/km (834 m elevation gain over 12 km)
- Trail des 4 cantons - T15 : 67 m/km (991 m elevation gain over 15 km)
- GUBBIO TRAIL CITTA' DI PIETRA - 10 KM : 67 m/km (754 m elevation gain over 11 km)
Your estimated time on each race
Calculated at your UTMB Index, by the same formula as your RAVIT plan.
Effort-km = km + elev. gain/100 · categories XXS to XXL by effort-km · minimum speed = distance ÷ time limit.
Distances as the crow flies from the start, rounded to the nearest ten. Cities: GeoNames (CC BY 4.0).
Ranking glossary
- Effort-km
- Distance in km plus elevation gain divided by 100: 50 km and 2,500 m of gain equals 75 effort-km. Categories: XXS under 25, XS 25 to 44, S 45 to 74, M 75 to 114, L 115 to 154, XL 155 to 209, XXL 210 and above.
- Gain/km
- Elevation gain divided by distance, in meters per kilometer: the lower it is, the more runnable the race.
- Time limit
- The maximum time allowed by the organizer to reach the finish, the final cut-off time.
- Minimum speed
- Distance divided by time limit, in km/h: the average pace to maintain to finish within the deadline. The lower it is, the wider the cut-off.
FAQ
How many XXS races in 2027?
95 2027 races from the RAVIT catalog are less than 25 km-effort, out of 740 ranked 2027 races.
Which XXS 2027 race has the widest cut-off time?
mozart 100 - mozart Lake Trail: 12 km in 12 h, i.e. a minimum speed of 1.0 km/h.
What pace do you need to maintain on a XXS race?
The median minimum speed is 4.0 km/h, across 88 races with a published time limit.
How much elevation gain per km on a XXS race?
36 m/km median, from 7 m/km (Istria 100 - 21K) to 72 m/km (Transgrancanaria - Promo).
How many XXS races publish a time limit?
88 out of 95. The others show « unknown » and fall to the end of the minimum speed ranking.
Why rank by effort-km rather than distance?
Because 100 m of elevation gain costs roughly the effort of one flat kilometer: 50 km and 2,500 m gain make 75 effort-km, like 75 flat km.
Method and sources
Data updated October 31, 2026, covering 95 2027 races in the RAVIT catalog.
- Distance, gain, date, country and time limit: sourced from each race organizer's website, and utmb.world for UTMB World Series events; each entry cites its source.
- Categories XXS to XXL: calculated by RAVIT using effort-km (km + gain/100), at the thresholds shown above.
- Minimum speed: distance divided by time limit. A race with no published time limit displays « unknown » and sorts to the end.
- Aid stations: the number of documented aid stations on the race's RAVIT entry; « unknown » when none are yet documented.