diff --git a/bincio/extract/parsers/fit.py b/bincio/extract/parsers/fit.py
index 8b1f5fb..130a400 100644
--- a/bincio/extract/parsers/fit.py
+++ b/bincio/extract/parsers/fit.py
@@ -139,5 +139,9 @@ def _normalise_sub_sport(value: Any) -> str | None:
         "indoor_cycling": "indoor",
         "trail": "trail",
         "track": "track",
+        "cross_country_skiing": "nordic",
+        "nordic_skiing": "nordic",
+        "skate_skiing": "nordic",
+        "backcountry_skiing": "nordic",
     }
     return mapping.get(s, s) or None
diff --git a/bincio/extract/sport.py b/bincio/extract/sport.py
index 7971093..b333559 100644
--- a/bincio/extract/sport.py
+++ b/bincio/extract/sport.py
@@ -43,6 +43,14 @@ _MAPPING: dict[str, str] = {
     "walking": "walking",
     "walk": "walking",
     "outdoor_walk": "walking",
+    # skiing
+    "skiing": "skiing",
+    "cross_country_skiing": "skiing",
+    "nordic_skiing": "skiing",
+    "downhill_skiing": "skiing",
+    "alpine_skiing": "skiing",
+    "skate_skiing": "skiing",
+    "backcountry_skiing": "skiing",
     # swimming
     "swimming": "swimming",
     "swim": "swimming",
@@ -50,7 +58,7 @@ _MAPPING: dict[str, str] = {
     "lap_swimming": "swimming",
 }
 
-BAS_SPORTS = {"cycling", "running", "hiking", "walking", "swimming", "other"}
+BAS_SPORTS = {"cycling", "running", "hiking", "walking", "swimming", "skiing", "other"}
 
 
 def normalise_sport(raw: object) -> str:
diff --git a/site/src/components/ActivityFeed.svelte b/site/src/components/ActivityFeed.svelte
index 5e918e0..48cd65a 100644
--- a/site/src/components/ActivityFeed.svelte
+++ b/site/src/components/ActivityFeed.svelte
@@ -61,6 +61,7 @@
     { value: 'hiking',   label: '🥾 Hiking' },
     { value: 'walking',  label: '🚶 Walking' },
     { value: 'swimming', label: '🏊 Swimming' },
+    { value: 'skiing',   label: '⛷️ Skiing' },
     { value: 'other',    label: '⚡ Other' },
   ];
 </script>
diff --git a/site/src/lib/format.ts b/site/src/lib/format.ts
index a3a0fab..458ce36 100644
--- a/site/src/lib/format.ts
+++ b/site/src/lib/format.ts
@@ -53,6 +53,7 @@ const SPORT_ICONS: Record<Sport, string> = {
   hiking:   '🥾',
   walking:  '🚶',
   swimming: '🏊',
+  skiing:   '⛷️',
   other:    '⚡',
 };
 
@@ -62,6 +63,7 @@ const SPORT_COLORS: Record<Sport, string> = {
   hiking:   '#4ade80',
   walking:  '#a3e635',
   swimming: '#38bdf8',
+  skiing:   '#e0f2fe',
   other:    '#a78bfa',
 };
 
diff --git a/site/src/lib/types.ts b/site/src/lib/types.ts
index 7badeef..1a28f6d 100644
--- a/site/src/lib/types.ts
+++ b/site/src/lib/types.ts
@@ -1,7 +1,7 @@
 /** TypeScript types mirroring BAS v1.0 schema. */
 
-export type Sport = "cycling" | "running" | "hiking" | "walking" | "swimming" | "other";
-export type SubSport = "road" | "mountain" | "gravel" | "indoor" | "trail" | "track" | null;
+export type Sport = "cycling" | "running" | "hiking" | "walking" | "swimming" | "skiing" | "other";
+export type SubSport = "road" | "mountain" | "gravel" | "indoor" | "trail" | "track" | "nordic" | null;
 export type Privacy = "public" | "blur_start" | "no_gps" | "private";
 
 export interface ActivitySummary {