Small island (~3.5 × 1.5 km), no private cars for visitors. Vedettes de l'Île de Batz — single-brand GIE; ~15-min crossing; €11 adult / €7 child, 13-yr-old pays adult, ~€44 round-trip. Onboard cash/cheque only; Vieux Port office takes cards.
Tide-dependent boarding (works through 15 Jun 2026). High tide → board at Estacade (Vieux Port, short walk from hotel). Low tide → board shifts to Port de Bloscon, ~30-min walk from Vieux Port. Check the tide table the night before; add a half-hour buffer for a Bloscon sailing.
- Jardin Exotique Georges Delaselle — south-east tip, ~15 min walk · daily 11:00–18:00 (last entry 17:30) · €21 family.
- Phare de l'Île de Batz — west end, ~30 min walk · Tue–Sun, 13:30–16:30 last climb, afternoon only · 44 m, 198 steps · €18 family.
- Lunch: Le PAB (Penn ar Batz), Le Bourg beside the church · walk-in only · phone +33 2 98 61 79 31 to confirm Thursday service. Fallback: Les Herbes Folles at the débarcadère.
- Perimeter GR 34 walk ~10–12 km / 3–4 h, flat — heath, dunes, coves, sheep pasture.
Day rhythm (built around Phare's 13:30 opening)
| Breakfast | At Hôtel Brittany & Spa |
| 10:00 | Ferry Roscoff → Île de Batz (15 min crossing) |
| ~10:30 | Disembark, start GR 34 anticlockwise from the port |
| ~11:30 | Jardin Delaselle (opens 11:00) — south-east tip, 1 h–1h30 inside |
| ~13:00–14:00 | Lunch at Le PAB in the bourg (call to confirm) |
| ~15:00 | Phare de l'Île de Batz — comfortably inside 13:30–16:30 climb window |
| Afternoon | Continue north wild coast back to port |
| 16:30 | Return ferry Île de Batz → Roscoff (fallback 18:00) |
| — | Spa at Hôtel Brittany & Spa |
| 19:00 | DinnerLe Sunset Bar at Hôtel Brittany & Spa — bistronomic sibling to Nori (Loïc Le Bail) · confirmed, 4 pax |
BirdsNesting gulls (lesser black-backed, herring), offshore terns, oystercatchers, passage curlews and whimbrels, stonechats and linnets in gorse. Grey seals possible east side.