diff --git a/bincio/edit/server.py b/bincio/edit/server.py
index 1d1886d..7bddb8d 100644
--- a/bincio/edit/server.py
+++ b/bincio/edit/server.py
@@ -435,6 +435,87 @@ async def upload_image(activity_id: str, file: UploadFile = File(...)) -> JSONRe
     return JSONResponse({"ok": True, "filename": dest.name})
 
 
+@app.get("/api/athlete")
+async def get_athlete() -> JSONResponse:
+    dd = _get_data_dir()
+    athlete_path = dd / "athlete.json"
+    if not athlete_path.exists():
+        raise HTTPException(404, "athlete.json not found — run bincio extract first")
+
+    data = json.loads(athlete_path.read_text(encoding="utf-8"))
+
+    # Layer edits/athlete.yaml overrides on top
+    overrides = _read_athlete_edits(dd)
+    for key in ("max_hr", "ftp_w", "hr_zones", "power_zones", "seasons", "gear"):
+        if key in overrides:
+            data[key] = overrides[key]
+
+    return JSONResponse({
+        "max_hr": data.get("max_hr"),
+        "ftp_w": data.get("ftp_w"),
+        "hr_zones": data.get("hr_zones"),
+        "power_zones": data.get("power_zones"),
+        "seasons": data.get("seasons", []),
+        "gear": data.get("gear", {}),
+    })
+
+
+@app.post("/api/athlete")
+async def save_athlete(payload: dict[str, Any]) -> JSONResponse:
+    dd = _get_data_dir()
+    athlete_path = dd / "athlete.json"
+    if not athlete_path.exists():
+        raise HTTPException(404, "athlete.json not found — run bincio extract first")
+
+    # Write edits/athlete.yaml with validated fields
+    edits_dir = dd / "edits"
+    edits_dir.mkdir(exist_ok=True)
+    overrides: dict[str, Any] = {}
+    if payload.get("max_hr") is not None:
+        overrides["max_hr"] = int(payload["max_hr"])
+    if payload.get("ftp_w") is not None:
+        overrides["ftp_w"] = int(payload["ftp_w"])
+    if payload.get("hr_zones") is not None:
+        overrides["hr_zones"] = [[int(lo), int(hi)] for lo, hi in payload["hr_zones"]]
+    if payload.get("power_zones") is not None:
+        overrides["power_zones"] = [[int(lo), int(hi)] for lo, hi in payload["power_zones"]]
+    if payload.get("seasons") is not None:
+        overrides["seasons"] = [
+            {"name": str(s["name"]), "start": str(s["start"]), "end": str(s["end"])}
+            for s in payload["seasons"]
+        ]
+    if payload.get("gear") is not None:
+        overrides["gear"] = payload["gear"]
+
+    import yaml
+    (edits_dir / "athlete.yaml").write_text(
+        yaml.dump(overrides, allow_unicode=True, default_flow_style=False),
+        encoding="utf-8",
+    )
+
+    # Patch athlete.json in-place (preserves power_curve, updated_at, etc.)
+    data = json.loads(athlete_path.read_text(encoding="utf-8"))
+    data.update(overrides)
+    athlete_path.write_text(json.dumps(data, indent=2, ensure_ascii=False))
+
+    # Re-merge so _merged/athlete.json symlink stays valid
+    from bincio.render.merge import merge_all
+    merge_all(dd)
+
+    return JSONResponse({"ok": True})
+
+
+def _read_athlete_edits(data_dir: Path) -> dict:
+    path = data_dir / "edits" / "athlete.yaml"
+    if not path.exists():
+        return {}
+    try:
+        import yaml
+        return yaml.safe_load(path.read_text(encoding="utf-8")) or {}
+    except Exception:
+        return {}
+
+
 @app.delete("/api/activity/{activity_id}/images/{filename}")
 async def delete_image(activity_id: str, filename: str) -> JSONResponse:
     dd = _get_data_dir()
diff --git a/site/src/components/AthleteDrawer.svelte b/site/src/components/AthleteDrawer.svelte
new file mode 100644
index 0000000..6225f7c
--- /dev/null
+++ b/site/src/components/AthleteDrawer.svelte
@@ -0,0 +1,277 @@
+<script lang="ts">
+  import { createEventDispatcher } from 'svelte';
+
+  export let editUrl: string;   // PUBLIC_EDIT_URL base
+
+  const dispatch = createEventDispatcher<{ close: void; saved: void }>();
+
+  // ── State ──────────────────────────────────────────────────────────────────
+  let loading = true;
+  let saving = false;
+  let error: string | null = null;
+  let status: string | null = null;
+
+  let maxHr: number | null = null;
+  let ftpW: number | null = null;
+  let hrZones: [number, number][] = [];
+  let powerZones: [number, number][] = [];
+  let seasons: { name: string; start: string; end: string }[] = [];
+
+  // ── Load ───────────────────────────────────────────────────────────────────
+  async function load() {
+    loading = true; error = null;
+    try {
+      const res = await fetch(`${editUrl}/api/athlete`);
+      if (!res.ok) throw new Error(await res.text());
+      const d = await res.json();
+      maxHr      = d.max_hr    ?? null;
+      ftpW       = d.ftp_w     ?? null;
+      hrZones    = d.hr_zones    ? d.hr_zones.map((z: number[]) => [z[0], z[1]] as [number,number]) : [];
+      powerZones = d.power_zones ? d.power_zones.map((z: number[]) => [z[0], z[1]] as [number,number]) : [];
+      seasons    = d.seasons ?? [];
+    } catch (e: any) {
+      error = e.message;
+    } finally {
+      loading = false;
+    }
+  }
+  load();
+
+  // ── Zone editing helpers ───────────────────────────────────────────────────
+  function onHiChange(zones: [number, number][], i: number) {
+    // Cascade: next row's lo = this row's hi
+    if (i + 1 < zones.length) zones[i + 1][0] = zones[i][1];
+    zones = [...zones]; // trigger reactivity
+    return zones;
+  }
+
+  function addZone(zones: [number, number][]): [number, number][] {
+    const prevHi = zones.length ? zones[zones.length - 1][1] : 0;
+    return [...zones, [prevHi, prevHi + 50]];
+  }
+
+  function removeZone(zones: [number, number][], i: number): [number, number][] {
+    const next = zones.filter((_, idx) => idx !== i);
+    // Re-cascade lo values
+    for (let j = 1; j < next.length; j++) next[j][0] = next[j - 1][1];
+    return next;
+  }
+
+  // ── Season helpers ─────────────────────────────────────────────────────────
+  function addSeason() {
+    const year = new Date().getFullYear();
+    seasons = [...seasons, { name: `${year}`, start: `${year}-01-01`, end: `${year}-12-31` }];
+  }
+  function removeSeason(i: number) {
+    seasons = seasons.filter((_, idx) => idx !== i);
+  }
+
+  // ── Save ───────────────────────────────────────────────────────────────────
+  async function save() {
+    saving = true; status = null; error = null;
+    try {
+      const res = await fetch(`${editUrl}/api/athlete`, {
+        method: 'POST',
+        headers: { 'Content-Type': 'application/json' },
+        body: JSON.stringify({
+          max_hr:       maxHr,
+          ftp_w:        ftpW,
+          hr_zones:     hrZones,
+          power_zones:  powerZones,
+          seasons,
+        }),
+      });
+      if (!res.ok) throw new Error(await res.text());
+      status = 'Saved.';
+      dispatch('saved');
+    } catch (e: any) {
+      error = e.message;
+    } finally {
+      saving = false;
+    }
+  }
+
+  function closeDrawer() { dispatch('close'); }
+
+  // Close on Escape
+  function onKeydown(e: KeyboardEvent) { if (e.key === 'Escape') closeDrawer(); }
+</script>
+
+<svelte:window on:keydown={onKeydown} />
+
+<!-- Backdrop -->
+<div
+  class="fixed inset-0 bg-black/50 z-40"
+  on:click={closeDrawer}
+  role="presentation"
+></div>
+
+<!-- Drawer -->
+<aside class="fixed top-0 right-0 h-full w-full max-w-lg bg-zinc-950 border-l border-zinc-800 z-50 flex flex-col shadow-2xl overflow-hidden">
+
+  <!-- Header -->
+  <div class="flex items-center justify-between px-5 py-4 border-b border-zinc-800 flex-shrink-0">
+    <h2 class="text-base font-semibold text-white">Edit Athlete Profile</h2>
+    <button on:click={closeDrawer} class="text-zinc-400 hover:text-white text-xl leading-none">×</button>
+  </div>
+
+  {#if loading}
+    <div class="flex-1 flex items-center justify-center text-zinc-500 text-sm">Loading…</div>
+  {:else if error && !saving}
+    <div class="flex-1 flex items-center justify-center text-red-400 text-sm px-6 text-center">{error}</div>
+  {:else}
+
+  <!-- Scrollable body -->
+  <div class="flex-1 overflow-y-auto px-5 py-5 space-y-8">
+
+    <!-- Key numbers -->
+    <section>
+      <h3 class="text-xs font-medium text-zinc-400 uppercase tracking-wide mb-3">Key numbers</h3>
+      <div class="grid grid-cols-2 gap-4">
+        <label class="block">
+          <span class="text-xs text-zinc-500 mb-1 block">Max HR (bpm)</span>
+          <input
+            type="number" min="100" max="250"
+            bind:value={maxHr}
+            class="w-full bg-zinc-900 border border-zinc-700 rounded-md px-3 py-2 text-sm text-white focus:outline-none focus:border-blue-500"
+          />
+        </label>
+        <label class="block">
+          <span class="text-xs text-zinc-500 mb-1 block">FTP (watts)</span>
+          <input
+            type="number" min="50" max="600"
+            bind:value={ftpW}
+            class="w-full bg-zinc-900 border border-zinc-700 rounded-md px-3 py-2 text-sm text-white focus:outline-none focus:border-blue-500"
+          />
+        </label>
+      </div>
+    </section>
+
+    <!-- HR Zones -->
+    <section>
+      <h3 class="text-xs font-medium text-zinc-400 uppercase tracking-wide mb-3">HR Zones (bpm)</h3>
+      <div class="space-y-2">
+        {#each hrZones as zone, i}
+          <div class="flex items-center gap-2">
+            <span class="text-xs text-zinc-500 w-5">Z{i+1}</span>
+            <input
+              type="number"
+              bind:value={zone[0]}
+              disabled={i === 0}
+              class="w-20 bg-zinc-900 border border-zinc-700 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:border-blue-500 disabled:opacity-40"
+            />
+            <span class="text-zinc-600 text-xs">–</span>
+            <input
+              type="number"
+              bind:value={zone[1]}
+              on:change={() => { hrZones = onHiChange(hrZones, i); }}
+              class="w-20 bg-zinc-900 border border-zinc-700 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:border-blue-500"
+            />
+            <span class="text-xs text-zinc-600">bpm</span>
+            <button
+              on:click={() => { hrZones = removeZone(hrZones, i); }}
+              class="ml-auto text-zinc-600 hover:text-red-400 text-sm leading-none"
+            >×</button>
+          </div>
+        {/each}
+      </div>
+      <button
+        on:click={() => { hrZones = addZone(hrZones); }}
+        class="mt-2 text-xs text-zinc-500 hover:text-white border border-zinc-700 hover:border-zinc-500 rounded px-3 py-1 transition-colors"
+      >+ Add zone</button>
+    </section>
+
+    <!-- Power Zones -->
+    <section>
+      <h3 class="text-xs font-medium text-zinc-400 uppercase tracking-wide mb-3">Power Zones (watts)</h3>
+      <div class="space-y-2">
+        {#each powerZones as zone, i}
+          <div class="flex items-center gap-2">
+            <span class="text-xs text-zinc-500 w-5">Z{i+1}</span>
+            <input
+              type="number"
+              bind:value={zone[0]}
+              disabled={i === 0}
+              class="w-20 bg-zinc-900 border border-zinc-700 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:border-blue-500 disabled:opacity-40"
+            />
+            <span class="text-zinc-600 text-xs">–</span>
+            <input
+              type="number"
+              bind:value={zone[1]}
+              on:change={() => { powerZones = onHiChange(powerZones, i); }}
+              class="w-20 bg-zinc-900 border border-zinc-700 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:border-blue-500"
+            />
+            <span class="text-xs text-zinc-600">W</span>
+            <button
+              on:click={() => { powerZones = removeZone(powerZones, i); }}
+              class="ml-auto text-zinc-600 hover:text-red-400 text-sm leading-none"
+            >×</button>
+          </div>
+        {/each}
+      </div>
+      <button
+        on:click={() => { powerZones = addZone(powerZones); }}
+        class="mt-2 text-xs text-zinc-500 hover:text-white border border-zinc-700 hover:border-zinc-500 rounded px-3 py-1 transition-colors"
+      >+ Add zone</button>
+    </section>
+
+    <!-- Seasons -->
+    <section>
+      <h3 class="text-xs font-medium text-zinc-400 uppercase tracking-wide mb-1">Seasons</h3>
+      <p class="text-xs text-zinc-600 mb-3">Overlay multiple seasons on the power curve chart.</p>
+      <div class="space-y-2">
+        {#each seasons as season, i}
+          <div class="flex items-center gap-2">
+            <input
+              type="text"
+              bind:value={season.name}
+              placeholder="Name"
+              class="w-20 bg-zinc-900 border border-zinc-700 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:border-blue-500"
+            />
+            <input
+              type="date"
+              bind:value={season.start}
+              class="bg-zinc-900 border border-zinc-700 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:border-blue-500"
+            />
+            <span class="text-zinc-600 text-xs">→</span>
+            <input
+              type="date"
+              bind:value={season.end}
+              class="bg-zinc-900 border border-zinc-700 rounded px-2 py-1.5 text-sm text-white focus:outline-none focus:border-blue-500"
+            />
+            <button
+              on:click={() => removeSeason(i)}
+              class="text-zinc-600 hover:text-red-400 text-sm leading-none"
+            >×</button>
+          </div>
+        {/each}
+      </div>
+      <button
+        on:click={addSeason}
+        class="mt-2 text-xs text-zinc-500 hover:text-white border border-zinc-700 hover:border-zinc-500 rounded px-3 py-1 transition-colors"
+      >+ Add season</button>
+    </section>
+
+  </div>
+
+  <!-- Footer -->
+  <div class="flex items-center gap-3 px-5 py-4 border-t border-zinc-800 flex-shrink-0">
+    <button
+      on:click={save}
+      disabled={saving}
+      class="px-4 py-2 bg-blue-600 hover:bg-blue-500 disabled:opacity-40 text-white text-sm font-medium rounded-md transition-colors"
+    >{saving ? 'Saving…' : 'Save'}</button>
+    <button
+      on:click={closeDrawer}
+      class="px-4 py-2 border border-zinc-700 hover:border-zinc-500 text-zinc-300 text-sm rounded-md transition-colors"
+    >Cancel</button>
+    {#if status}
+      <span class="text-green-400 text-sm">{status}</span>
+    {/if}
+    {#if error}
+      <span class="text-red-400 text-sm truncate">{error}</span>
+    {/if}
+  </div>
+
+  {/if}
+</aside>
diff --git a/site/src/components/AthleteView.svelte b/site/src/components/AthleteView.svelte
index 846f40c..7bbaa3f 100644
--- a/site/src/components/AthleteView.svelte
+++ b/site/src/components/AthleteView.svelte
@@ -2,11 +2,15 @@
   import { onMount } from 'svelte';
   import type { AthleteJson, BASIndex, ActivitySummary } from '../lib/types';
   import MmpChart from './MmpChart.svelte';
+  import AthleteDrawer from './AthleteDrawer.svelte';
 
   let athlete: AthleteJson | null = null;
   let activities: ActivitySummary[] = [];
   let loading = true;
   let error: string | null = null;
+  let drawerOpen = false;
+
+  const editUrl = import.meta.env.PUBLIC_EDIT_URL ?? '';
 
   onMount(async () => {
     try {
@@ -19,6 +23,7 @@
       const index: BASIndex = await indexRes.json();
       // Only activities with power data contribute to the curve
       activities = index.activities.filter(a => a.mmp && a.privacy !== 'private');
+
     } catch (e: any) {
       error = e.message;
     } finally {
@@ -26,6 +31,13 @@
     }
   });
 
+  async function onSaved() {
+    // Reload athlete.json after edits are saved
+    const res = await fetch(`${import.meta.env.BASE_URL}data/athlete.json?t=${Date.now()}`);
+    if (res.ok) athlete = await res.json();
+    drawerOpen = false;
+  }
+
   function fmtZone(zones: [number, number][], i: number): string {
     const [lo, hi] = zones[i];
     return hi >= 9000 ? `${lo}+ W` : `${lo}–${hi} W`;
@@ -42,6 +54,16 @@
   <p class="text-red-400 text-sm">{error}</p>
 {:else if athlete}
 
+  <!-- Edit button (only when edit server is configured) -->
+  {#if editUrl}
+    <div class="flex justify-end mb-6">
+      <button
+        on:click={() => drawerOpen = true}
+        class="px-4 py-2 text-sm border border-zinc-700 hover:border-zinc-500 text-zinc-300 hover:text-white rounded-md transition-colors"
+      >Edit profile</button>
+    </div>
+  {/if}
+
   <!-- Power curve section -->
   <section class="mb-10">
     <h2 class="text-lg font-semibold text-white mb-4">Power Curve</h2>
@@ -109,3 +131,11 @@
   </section>
 
 {/if}
+
+{#if drawerOpen && editUrl}
+  <AthleteDrawer
+    {editUrl}
+    on:close={() => drawerOpen = false}
+    on:saved={onSaved}
+  />
+{/if}