diff --git a/src/lib/server/db.ts b/src/lib/server/db.ts
index 9945ffe..4bf30d1 100644
--- a/src/lib/server/db.ts
+++ b/src/lib/server/db.ts
@@ -424,33 +424,44 @@ export function getSegment(id: number): SegmentRow | undefined {
 	return db.prepare('SELECT * FROM segments WHERE id = ?').get(id) as SegmentRow | undefined;
 }
 
+/** Per-user bests split by activity type - a run doesn't compete with a ride. */
 export function segmentLeaderboard(segmentId: number): {
 	user_id: number;
 	username: string;
+	type: string;
 	best_s: number;
 	attempts: number;
 	date: string | null;
 }[] {
 	return db
 		.prepare(
-			`SELECT e.user_id, u.username, min(e.elapsed_s) best_s, count(*) attempts,
-			        (SELECT date FROM segment_efforts b
+			`SELECT e.user_id, u.username, a.type, min(e.elapsed_s) best_s, count(*) attempts,
+			        (SELECT b.date FROM segment_efforts b
+			         JOIN activities ab ON ab.id = b.activity_id
 			         WHERE b.segment_id = e.segment_id AND b.user_id = e.user_id
+			           AND ab.type = a.type AND b.elapsed_s IS NOT NULL
 			         ORDER BY b.elapsed_s ASC LIMIT 1) date
-			 FROM segment_efforts e JOIN users u ON u.id = e.user_id
+			 FROM segment_efforts e
+			 JOIN users u ON u.id = e.user_id
+			 JOIN activities a ON a.id = e.activity_id
 			 WHERE e.segment_id = ? AND e.elapsed_s IS NOT NULL
-			 GROUP BY e.user_id ORDER BY best_s ASC`
+			 GROUP BY e.user_id, a.type ORDER BY best_s ASC`
 		)
 		.all(segmentId) as {
 		user_id: number;
 		username: string;
+		type: string;
 		best_s: number;
 		attempts: number;
 		date: string | null;
 	}[];
 }
 
-/** All segments a user has completed, with their best time, attempts, and rank. */
+/**
+ * All segments a user has completed, with their best time, attempts, and
+ * rank. Rank is computed within the activity type of the user's best effort,
+ * since leaderboards are split by type.
+ */
 export function userSegments(userId: number): {
 	id: number;
 	name: string;
@@ -458,20 +469,12 @@ export function userSegments(userId: number): {
 	elev_gain_m: number;
 	attempts: number;
 	best_s: number | null;
+	best_type: string | null;
 	rank: number | null;
 }[] {
-	return db
+	const base = db
 		.prepare(
-			`SELECT s.id, s.name, s.distance_m, s.elev_gain_m,
-			        count(e.id) attempts,
-			        min(e.elapsed_s) best_s,
-			        CASE WHEN min(e.elapsed_s) IS NULL THEN NULL ELSE (
-			          SELECT count(*) + 1 FROM (
-			            SELECT min(e2.elapsed_s) b FROM segment_efforts e2
-			            WHERE e2.segment_id = s.id AND e2.elapsed_s IS NOT NULL AND e2.user_id != @userId
-			            GROUP BY e2.user_id
-			          ) others WHERE others.b < min(e.elapsed_s)
-			        ) END rank
+			`SELECT s.id, s.name, s.distance_m, s.elev_gain_m, count(e.id) attempts
 			 FROM segments s JOIN segment_efforts e ON e.segment_id = s.id AND e.user_id = @userId
 			 GROUP BY s.id ORDER BY attempts DESC, s.name`
 		)
@@ -481,9 +484,37 @@ export function userSegments(userId: number): {
 		distance_m: number;
 		elev_gain_m: number;
 		attempts: number;
-		best_s: number | null;
-		rank: number | null;
 	}[];
+
+	const bestStmt = db.prepare(
+		`SELECT e.elapsed_s, a.type FROM segment_efforts e
+		 JOIN activities a ON a.id = e.activity_id
+		 WHERE e.segment_id = ? AND e.user_id = ? AND e.elapsed_s IS NOT NULL
+		 ORDER BY e.elapsed_s ASC LIMIT 1`
+	);
+	const rankStmt = db.prepare(
+		`SELECT count(*) + 1 n FROM (
+		   SELECT min(e2.elapsed_s) b FROM segment_efforts e2
+		   JOIN activities a2 ON a2.id = e2.activity_id
+		   WHERE e2.segment_id = ? AND a2.type = ? AND e2.elapsed_s IS NOT NULL AND e2.user_id != ?
+		   GROUP BY e2.user_id
+		 ) others WHERE others.b < ?`
+	);
+
+	return base.map((segment) => {
+		const best = bestStmt.get(segment.id, userId) as
+			| { elapsed_s: number; type: string }
+			| undefined;
+		const rank = best
+			? (rankStmt.get(segment.id, best.type, userId, best.elapsed_s) as { n: number }).n
+			: null;
+		return {
+			...segment,
+			best_s: best?.elapsed_s ?? null,
+			best_type: best?.type ?? null,
+			rank
+		};
+	});
 }
 
 export function deleteSegment(id: number, userId: number): boolean {
@@ -502,12 +533,13 @@ export function segmentAllEfforts(segmentId: number): {
 	username: string;
 	activity_id: number;
 	activity_name: string;
+	type: string;
 	elapsed_s: number | null;
 	date: string | null;
 }[] {
 	return db
 		.prepare(
-			`SELECT e.id, e.user_id, u.username, e.activity_id, a.name activity_name,
+			`SELECT e.id, e.user_id, u.username, e.activity_id, a.name activity_name, a.type,
 			        e.elapsed_s, e.date
 			 FROM segment_efforts e
 			 JOIN users u ON u.id = e.user_id
@@ -521,6 +553,7 @@ export function segmentAllEfforts(segmentId: number): {
 		username: string;
 		activity_id: number;
 		activity_name: string;
+		type: string;
 		elapsed_s: number | null;
 		date: string | null;
 	}[];
diff --git a/src/routes/segments/[id]/+page.svelte b/src/routes/segments/[id]/+page.svelte
index e98a492..618c572 100644
--- a/src/routes/segments/[id]/+page.svelte
+++ b/src/routes/segments/[id]/+page.svelte
@@ -3,11 +3,25 @@
 	import MapSlot from '$lib/components/MapSlot.svelte';
 	import StatTile from '$lib/components/StatTile.svelte';
 	import { mapState } from '$lib/map-state.svelte';
+	import { typeSlot } from '$lib/activity-colors';
 	import { fmtDate, fmtDistance, fmtElapsed, fmtElevation } from '$lib/format';
 
 	let { data } = $props();
 	const s = $derived(data.segment);
 
+	// efforts and leaderboards are split by activity type
+	const types = $derived.by(() => {
+		const counts = new Map<string, number>();
+		for (const effort of data.efforts) {
+			counts.set(effort.type, (counts.get(effort.type) ?? 0) + 1);
+		}
+		return [...counts.entries()].sort((a, b) => b[1] - a[1]).map(([type]) => type);
+	});
+	let picked = $state<string | null>(null);
+	const selectedType = $derived(picked ?? types[0] ?? null);
+	const board = $derived(data.leaderboard.filter((row) => row.type === selectedType));
+	const efforts = $derived(data.efforts.filter((row) => row.type === selectedType));
+
 	// show the segment on the persistent map: synthetic negative id so it can
 	// be highlighted without colliding with activity ids
 	$effect(() => {
@@ -53,14 +67,29 @@
 	<StatTile label="Distance" value={fmtDistance(s.distance_m)} />
 	<StatTile label="Ascent" value={fmtElevation(s.elev_gain_m)} />
 	<StatTile
-		label="Record"
-		value={data.leaderboard[0] ? fmtElapsed(data.leaderboard[0].best_s) : '–'}
-		detail={data.leaderboard[0]?.username ?? 'no timed efforts yet'}
+		label={selectedType ? `Record (${selectedType})` : 'Record'}
+		value={board[0] ? fmtElapsed(board[0].best_s) : '–'}
+		detail={board[0]?.username ?? 'no timed efforts yet'}
 	/>
 </div>
 
-<h2>Leaderboard</h2>
-{#if data.leaderboard.length === 0}
+{#if types.length > 1}
+	<div class="type-chips" role="group" aria-label="Activity type">
+		{#each types as type (type)}
+			<button
+				class="chip"
+				class:on={selectedType === type}
+				style="--tc: var(--cat-{typeSlot(type)})"
+				onclick={() => (picked = type)}
+			>
+				{type}
+			</button>
+		{/each}
+	</div>
+{/if}
+
+<h2>Leaderboard{selectedType ? ` · ${selectedType}` : ''}</h2>
+{#if board.length === 0}
 	<div class="card empty">No timed efforts yet - ride or run it with a GPS track.</div>
 {:else}
 	<div class="card table-wrap">
@@ -69,7 +98,7 @@
 				<tr><th>#</th><th>Athlete</th><th>Best time</th><th>Attempts</th><th>Date</th></tr>
 			</thead>
 			<tbody>
-				{#each data.leaderboard as row, i (row.user_id)}
+				{#each board as row, i (row.user_id + row.type)}
 					<tr class:me={row.user_id === data.myUserId}>
 						<td>{i + 1}</td>
 						<td><a href="/users/{row.username}">{row.username}</a></td>
@@ -83,15 +112,15 @@
 	</div>
 {/if}
 
-{#if data.efforts.length > 0}
-	<h2>All efforts ({data.efforts.length})</h2>
+{#if efforts.length > 0}
+	<h2>All efforts{selectedType ? ` · ${selectedType}` : ''} ({efforts.length})</h2>
 	<div class="card table-wrap">
 		<table>
 			<thead>
 				<tr><th>Athlete</th><th>Time</th><th>Date</th><th>Activity</th></tr>
 			</thead>
 			<tbody>
-				{#each data.efforts as effort (effort.id)}
+				{#each efforts as effort (effort.id)}
 					<tr class:me={effort.user_id === data.myUserId}>
 						<td><a href="/users/{effort.username}">{effort.username}</a></td>
 						<td class="time">{effort.elapsed_s !== null ? fmtElapsed(effort.elapsed_s) : '–'}</td>
@@ -131,6 +160,32 @@
 		grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
 		gap: 0.75rem;
 	}
+	.type-chips {
+		display: flex;
+		gap: 0.4rem;
+		margin-top: 1.25rem;
+	}
+	.chip {
+		padding: 0.3rem 0.85rem;
+		border-radius: 999px;
+		border: 1px solid var(--border);
+		background: transparent;
+		color: var(--text-secondary);
+		font: inherit;
+		font-size: 0.85rem;
+		font-weight: 500;
+		text-transform: capitalize;
+		cursor: pointer;
+	}
+	.chip:hover {
+		background: var(--wash);
+	}
+	.chip.on {
+		background: color-mix(in srgb, var(--tc) 14%, transparent);
+		border-color: transparent;
+		color: var(--tc);
+		font-weight: 600;
+	}
 	.table-wrap {
 		overflow-x: auto;
 	}
diff --git a/src/routes/users/[username]/+page.svelte b/src/routes/users/[username]/+page.svelte
index 8823a90..8210a66 100644
--- a/src/routes/users/[username]/+page.svelte
+++ b/src/routes/users/[username]/+page.svelte
@@ -54,7 +54,7 @@
 					{fmtDistance(segment.distance_m)} · {segment.attempts}
 					{segment.attempts === 1 ? 'attempt' : 'attempts'}
 					{#if segment.best_s !== null}
-						· best {fmtElapsed(segment.best_s)}
+						· best {fmtElapsed(segment.best_s)}{#if segment.best_type}&nbsp;({segment.best_type}){/if}
 						{#if segment.rank !== null}· #{segment.rank}{/if}
 					{/if}
 				</span>