XL ultra-trails 2027: 155 to 209 km-effort

55 races in 2027 are 155 to 209 km-effort. Each with its date, country, elevation gain/km, cut-off time and minimum speed required.

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Widest cut-off times in XL

The widest cut-off requires a minimum speed of 1.1 km/h: Transpyrenea - 100% Basque - Transpy 100K.

Transpyrenea - 100% Basque - Transpy 100K : 1.1 km/h (103 km in 96 h)
Restonica Trail - Ultra-Trail® di Corsica : 2.3 km/h (111 km in 48 h)
Transylvania 100k : 2.8 km/h (102 km in 36 h)
Montreux Trail Festival - MXTREME : 3.1 km/h (103 km in 33 h)
Trail 100 Andorra - Ultra 105K : 3.1 km/h (107 km in 34 h)

Most rolling races in XL

The most rolling climbs only 2 m per km: C&O Canal 100.

C&O Canal 100 : 2 m/km (292 m elevation gain over 161 km)
Yeti Washington 100 Mile : 4 m/km (599 m elevation gain over 163 km)
Indiana Trail 100 : 9 m/km (1,427 m elevation gain over 161 km)
Bootlegger 100 : 11 m/km (1,708 m elevation gain over 161 km)
Coldwater Rumble 100 : 13 m/km (2,171 m elevation gain over 161 km)

Steepest races in XL

The steepest climbs 76 m per km: Montreux Trail Festival - MXTREME.

Montreux Trail Festival - MXTREME : 76 m/km (7,800 m elevation gain over 103 km)
Trail 100 Andorra - Ultra 105K : 69 m/km (7,318 m elevation gain over 107 km)
Monte Rosa Walserwaeg - Les sentiers des Valdôtains : 67 m/km (8,094 m elevation gain over 120 km)
Eiger Ultra Trail - E101 - Ultra Trail : 64 m/km (6,424 m elevation gain over 101 km)
Ultra Trail do Marão - UTME : 64 m/km (7,530 m elevation gain over 118 km)

Most accessible 100-milers in XL

The most accessible 100-miler runs at 4.3 km/h minimum average pace: Cool Moon 100.

Cool Moon 100 : 4.3 km/h (161 km in 37 h)
Zion 100 : 4.4 km/h (160 km in 36 h)
Tarawera Ultra-Trail - TMiler : 4.5 km/h (163 km in 36 h)
No Business (Clockwise - Odd Years) : 4.8 km/h (162 km in 34 h)
Leona Divide 100 : 4.9 km/h (161 km in 33 h)

Your estimated time on each race

Calculated at your UTMB Index, by the same formula as your RAVIT plan.

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The 55 XL 2027 races (155 to 209 km-effort).
No.	Race	Date	Country	Cat.	Effort-km	Elev. gain/km (m/km)	Time limit	Minimum speed (km/h)	Aid stations
1	Transpyrenea - 100% Basque - Transpy 100K	08/14	FR	XL	155	51	96 h	1.1	unknown
2	Restonica Trail - Ultra-Trail® di Corsica	07/08	FR	XL	180	64	48 h	2.3	11
3	Transylvania 100k	05/22	RO	XL	159	57	36 h	2.8	7
4	Montreux Trail Festival - MXTREME	07/24	CH	XL	180	76	33 h	3.1	9
5	Trail 100 Andorra - Ultra 105K	06/12	AD	XL	179	69	34 h	3.1	11
6	Eryri by UTMB® - Eryri 100K	05/15	GB	XL	166	55	32 h 30	3.3	8
7	Monte Rosa Walserwaeg - Les sentiers des Valdôtains	07/16	IT	XL	201	67	36 h	3.3	14
8	Vietnam Highlands Trail by UTMB - 100K LANGBIANG	01/09	unknown	XL	155	50	29 h	3.6	11
9	Bucovina Ultra Rocks by UTMB - ULTRA ROCKS	07/23	RO	XL	186	60	32 h 30	3.6	13
10	Amazean Jungle Thailand - BETONG 100M	04/30	TH	XL	171	49	32 h	3.6	10
11	Ultra Trail do Marão - UTME	04/02	PT	XL	193	64	32 h	3.7	unknown
12	Swiss Alps 100k	08/06	CH	XL	159	59	27 h	3.7	10
13	Trail de Haute Provence - THP120	05/07	FR	XL	181	47	33 h	3.7	9
14	Wildstrubel - Wild 110 Crans-Montana	09/10	CH	XL	177	56	30 h	3.8	12
15	Julian Alps Trail Run - I FEEL SLOVENIA 120K	09/17	SI	XL	186	53	32 h	3.8	11
16	MaXi-Race - Tour du lac d'Annecy	05/29	FR	XL	157	58	26 h 05	3.8	14
17	Val D'Aran - CDH - Camins d'Hèr	07/09	ES	XL	172	56	28 h	3.9	12
18	Zugspitz Ultra Trail - Ultratrail	06/18	unknown	XL	162	51	27 h	4.0	11
19	La Sportiva Lavaredo Ultra Trail - Lavaredo 120K	06/25	IT	XL	174	44	30 h	4.0	11
20	Eiger Ultra Trail - E101 - Ultra Trail	07/17	CH	XL	164	64	25 h	4.0	14
21	Tenerife Bluetrail - TENERIFE BLUETRAIL 110k	04/09	ES	XL	175	59	27 h	4.1	12
22	SWISS CANYON TRAIL - 111 KM	06/05	CH	XL	163	40	28 h	4.2	13
23	Transgrancanaria - Classic	02/26	ES	XL	193	54	30 h 01	4.2	10
24	Grand Raid Ventoux - UGP - Ultra Géant de Provence	04/23	FR	XL	184	46	29 h 30	4.3	8
25	Ultra Trail Whistler - 100K	06/26	CA	XL	158	53	24 h	4.3	13
26	Cool Moon 100	06/12	US	XL	200	24	37 h	4.3	39
27	Pieniny by UTMB - Spiski Wędrowiec	04/22	PL	XL	197	44	31 h	4.4	9
28	Zion 100	04/10	US	XL	190	19	36 h	4.4	23
29	Trail du Saint Jacques - 100M - Ultra du Saint Jacques	06/18	FR	XL	197	42	30 h 50	4.5	12
30	Tarawera Ultra-Trail - TMiler	02/13	NZ	XL	208	28	36 h	4.5	15
31	S1 Trail - La Corsa Della Bora - Bora Ultra	01/09	IT	XL	163	41	25 h	4.6	9
32	Grand Trail des Cadourques - GTC	04/02	FR	XL	167	35	26 h 30	4.7	8
33	Chianti Ultra Trail - Ultra Trail Chianti Castles	03/20	IT	XL	172	39	26 h 30	4.7	10
34	Ultra Trail Tour de Nancy - UTTN ROI Stan	05/22	FR	XL	162	35	25 h 30	4.7	unknown
35	No Business (Clockwise - Odd Years)	10/23	US	XL	201	24	34 h	4.8	15
36	Leona Divide 100	04/10	US	XL	208	29	33 h	4.9	12
37	mozart 100 - mozart 100	06/05	AT	XL	186	58	24 h	4.9	12
38	Coldwater Rumble 100	01/16	US	XL	182	13	32 h	5.0	15
39	Bootlegger 100	04/03	US	XL	178	11	32 h	5.0	15
40	VA Trail Festival 100	10/09	US	XL	184	15	32 h	5.0	15
41	Mohican 100	05/29	US	XL	187	16	32 h	5.0	20
42	San Diego 100	04/30	US	XL	203	26	32 h	5.0	14
43	ULTRA BOUCLE DE LA SARRA BY TDR - Golden Talc	05/21	FR	XL	186	47	24 h	5.3	unknown
44	C&O Canal 100	04/24	US	XL	163	2	30 h	5.4	21
45	Leadville 100	08/21	US	XL	201	25	30 h	5.4	12
46	Indiana Trail 100	10/09	US	XL	175	9	30 h	5.4	23
47	Old Dominion	05/29	US	XL	200	25	28 h	5.8	23
48	PROVITAL BACKYARD ULTRA - GRAN CANARIA - 24 Loops	05/15	ES	XL	185	15	24 h	6.7	unknown
49	Ultra Trail des Vallees - UTDV 130 Km	03/20	FR	XL	158	24	17 h 20	7.4	unknown
50	TGC	02/19	ES	XL	190	52	unknown	unknown	10
51	TDLS - Ultra Trail de la Sibérie - BE - 125Km	02/20	BE	XL	158	31	unknown	unknown	unknown
52	Nuts Karhunkierros 166 km	05/28	FI	XL	195	16	unknown	unknown	8
53	Yeti Washington 100 Mile	06/25	US	XL	168	4	unknown	unknown	13
54	CDR	07/31	CA	XL	161	37	unknown	unknown	5
55	Ultra Trail Harricana 125km	09/03	CA	XL	162	33	unknown	unknown	14

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 XL races in 2027?

55 2027 races from the RAVIT catalog are 155 to 209 km-effort, out of 740 ranked 2027 races.

Which XL 2027 race has the widest cut-off time?

Transpyrenea - 100% Basque - Transpy 100K: 103 km in 96 h, i.e. a minimum speed of 1.1 km/h.

What pace do you need to maintain on a XL race?

The median minimum speed is 4.3 km/h, across 49 races with a published time limit.

How much elevation gain per km on a XL race?

44 m/km median, from 2 m/km (C&O Canal 100) to 76 m/km (Montreux Trail Festival - MXTREME).

How many XL races publish a time limit?

49 out of 55. 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 55 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.