What Font grade is B1 at Block'Out Cergy?

B1 at Block'Out Cergy is 4+, about V0–V0+ in V-scale.

What Font grade is B2 at Block'Out Cergy?

B2 at Block'Out Cergy is 5A, about V1 in V-scale.

What Font grade is B3 at Block'Out Cergy?

B3 at Block'Out Cergy is 5B–5C, about V1–V2 in V-scale.

What Font grade is B4 at Block'Out Cergy?

B4 at Block'Out Cergy is 6A, about V3 in V-scale.

What Font grade is B5 at Block'Out Cergy?

B5 at Block'Out Cergy is 6A+, about V3–V4 in V-scale.

What Font grade is B6 at Block'Out Cergy?

B6 at Block'Out Cergy is 6B, about V4 in V-scale.

Climbing gym · Cergy, France

Block'Out Cergy grades, explained

The chain's first gym, opened in June 2008 and enlarged since. It has 2,100 m² with 1,230 m² of climbing surface in three air-conditioned rooms: about 280 boulders on 56 wall profiles, reset every three to four weeks, and a children's area with a slide. Besides the restaurant there are a fitness room, hammam, sauna and an osteopath; parking is free.

Day passes Gym website Directions Day pass €18 · hours and prices below

Bouldering grades

Block'Out uses its own numbered scale, B1 (easiest) to B14, instead of grading by hold colour. Block'Out does not publish Font equivalents. Third-party sources agree that, above about 5C, each B step is roughly one Font step, but they differ on where the scale starts. The levels below follow Kaskad Coaching's table (2026); each level's note gives an older forum mapping (2016).

Level	Font	≈ V-scale
B1An older (2016) forum mapping: 4.	4+	V0–V0+
B2An older (2016) forum mapping: 4+.	5A	V1
B3An older (2016) forum mapping: 5.	5B–5C	V1–V2
B4An older (2016) forum mapping: 5+.	6A	V3
B5An older (2016) forum mapping: 6A.	6A+	V3–V4
B6An older (2016) forum mapping: 6B.	6B	V4
B7An older (2016) forum mapping: 6C.	6B+	V4
B8An older (2016) forum mapping: 7A.	6C	V5
B9An older (2016) forum mapping: 7A+.	6C+	V5–V6
B10An older (2016) forum mapping: 7B.	7A	V6
B11An older (2016) forum mapping: 7B+.	7A+	V7
B12An older (2016) forum mapping: 7C.	7B	V7–V8
B13An older (2016) forum mapping: 7C+.	7B+	V8
B14An older (2016) forum mapping: 8A.	7C	V9

Block'Out grades the same way at all 13 of its gyms. All Block'Out gyms and grades

From climbers' descriptions and photos of the gym's grade boards. Gyms reset and regrade often, and grades vary between setters, so treat this as a guide and check the boards when you visit.

Visiting Block'Out Cergy

Address: 9 chaussée Jules César, 95520 Cergy, FranceGoogle Maps Apple Maps OpenStreetMap
Booking: Walk in: no booking neededNo booking needed: open climbing is unlimited in time during opening hours. Single sessions and multi-visit books can also be bought online.Day passes
Prices: Day pass · adult €18
Day pass · concessionclub members from other gyms, school and university students, jobseekers €16
Day pass · childunder 10 €12
10-visit pass · adultvalid at all Block'Out gyms except Toulouse and Nantes; mandatory lifetime card +€5; reduced rate €130 €150
10-visit pass · adultHappy hour only (weekdays 11:00–16:00 and 21:30–23:00; weekends 18:30–21:00); mandatory lifetime card +€5 €100
Monthly · adultPass France, valid at all Block'Out gyms; 12-month commitment (then rolling), set-up fee waived; reduced rate €44. Without commitment: €50 set-up fee in the first month. €49
Monthly · adultHappy-hour-only pass (weekdays 11:00–16:00 and 21:30–23:00; weekends 18:30–21:00); same 12-month commitment terms €36
Shoe hire €5
Reduced and under-10 rates shown on the page's price table; the mandatory lifetime card applies to 10-visit cards.All prices on the gym's site
Opening hours: Mon–Fri 11:00–23:00
Sat–Sun 09:00–21:00
Hours on the gym's site
First visit: What to know before your first visit
Phone: +33 1 30 75 13 27
Photos: Instagram Photos on Google Maps

Day pass · adult	€18
Day pass · concessionclub members from other gyms, school and university students, jobseekers	€16
Day pass · childunder 10	€12
10-visit pass · adultvalid at all Block'Out gyms except Toulouse and Nantes; mandatory lifetime card +€5; reduced rate €130	€150
10-visit pass · adultHappy hour only (weekdays 11:00–16:00 and 21:30–23:00; weekends 18:30–21:00); mandatory lifetime card +€5	€100
Monthly · adultPass France, valid at all Block'Out gyms; 12-month commitment (then rolling), set-up fee waived; reduced rate €44. Without commitment: €50 set-up fee in the first month.	€49
Monthly · adultHappy-hour-only pass (weekdays 11:00–16:00 and 21:30–23:00; weekends 18:30–21:00); same 12-month commitment terms	€36
Shoe hire	€5

Mon–Fri	11:00–23:00
Sat–Sun	09:00–21:00

Instagram

Hours and prices from the gym's own website, checked 3 October 2026. They change, so check before you go.

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Questions

What Font grade is B1 at Block'Out Cergy?: B1 at Block'Out Cergy is 4+, about V0–V0+ in V-scale.
What Font grade is B2 at Block'Out Cergy?: B2 at Block'Out Cergy is 5A, about V1 in V-scale.
What Font grade is B3 at Block'Out Cergy?: B3 at Block'Out Cergy is 5B–5C, about V1–V2 in V-scale.
What Font grade is B4 at Block'Out Cergy?: B4 at Block'Out Cergy is 6A, about V3 in V-scale.
What Font grade is B5 at Block'Out Cergy?: B5 at Block'Out Cergy is 6A+, about V3–V4 in V-scale.
What Font grade is B6 at Block'Out Cergy?: B6 at Block'Out Cergy is 6B, about V4 in V-scale.

Convert any grade All gyms

Other Block'Out gyms

All 13 Block'Out gyms

More gyms in France

All 2 climbing gyms in Cergy

Sources

Checked 3 October 2026. Gear Loop isn't affiliated with Block'Out Cergy.