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SF MARATHON 1ST HALF 2026

Christian Ong

Castro Valley, CA

Bib: 19639 M 26

0:00
0:00
/ mi
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Overall
#0 / 6575
Top 38%
Gender (Male)
#0 / 3619
Top 48%
Division (M25-29)
#0 / 796
Race Day Weather
59°/49°F
scattered clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
2M
9:44/mi
19:28
→ flat
12 ft elev
4M
9:22/mi
38:12
↑ 67↓ 69
10 ft elev
6M
9:22/mi
56:56
↑ 1231.1%
126 ft elev
8M
11:21/mi
1:19:39
↑ 166↓ 531.1%
246 ft elev
9.6M
7:42/mi
1:31:59
↑ 68↓ 1931.5%
126 ft elev
10M
18:34/mi
1:39:24
↓ 241.1%
90 ft elev
10.5M
4:50/mi
1:41:49
↓ 732.7%
18 ft elev
12M
15:25/mi
2:04:57
↑ 2803.2%
272 ft elev
Finish· 13.11 mi
9:11/mi
2:15:08
↑ 14↓ 891.3%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6M
56:569:29 /mi⚡ faster
2nd Half
1:18:1211:00 /mi+37.4%
Positive split — 37.4% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
2M
19:289:442.00 mi19:28
9:44
-
4M
38:129:332.00 mi18:44
9:22
-0:22
6M
56:569:292.00 mi18:44
9:22
0:00
8M
1:19:399:572.00 mi22:43
11:21
+1:59
9.6M
1:31:599:351.60 mi12:20
7:42
-3:39
10M
1:39:249:560.40 mi7:25
18:34
+10:52
10.5M
1:41:499:420.50 mi2:25
4:50
-13:44
12M
2:04:5710:251.50 mi23:08
15:25
+10:35
Finish(13.11 mi)
2:15:0810:191.11 mi10:11
9:11
-6:14
Trend:
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

4:50 /mi

Average Pace

10:19 /mi

Slowest Pace

18:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:25

2% of race

Time at Steady Pace

1:19:27

59% of race

Time at Slower Pace

53:16

39% of race

Average Pace: 10:18 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi3.3mi6.6mi9.8mi13.1mi
Pace:
Faster
Steady
Slower
Featured Segment

Garmin Challenge

Top 40%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

9:50

Segment Time

10:56/mi

Pace

0.90 mi

Distance

Overall

2644

Men

1810

Division

425

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM25-29Seg. OverallSeg. MalesSeg. M25-29
2M2.00 mi2624184142638392396561
4M2.00 mi2228+3961612+229384+4219421434343
6M2.00 mi2073+1551520+92366+1818831403332
8M2.00 mi2585-5121832-312433-6739252548580
9.6M1.60 mi2278+3071620+212386+471247837195
10M0.40 mi2292-141627-7393-727271840431
10.5M0.50 mi2296-41628-1395-226961834436
12M1.50 mi2549-2531772-144429-3438392396561
Finish(13.11 mi)1.11 mi2469+801732+40419+1018621350327

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 58%
~flat
+5ft-3ft

Overall

3839

Males

2396

M25-29

562

2M→4M

2.0 - 4.0 mi

Top 30%
×4story building
+67ft-69ft

Overall

1942

Males

1434

M25-29

343

4M→6M

4.0 - 6.0 mi

Top 29%
×9story building
+123ft-9ft

Overall

1883

Males

1403

M25-29

332

6M→8M

6.0 - 8.0 mi

Top 60%
×12story building
+166ft-53ft

Overall

3925

Males

2548

M25-29

581

8M→9.6M

8.0 - 9.6 mi

Top 19%
×13story building
+68ft-193ft

Overall

1247

Males

837

M25-29

195

9.6M→10M

9.6 - 10.0 mi

Top 41%
×2story building
+0ft-24ft

Overall

2727

Males

1840

M25-29

432

10M→10.5M

10.0 - 10.5 mi

Top 41%
×6story building
+1ft-73ft

Overall

2696

Males

1834

M25-29

437

10.5M→12M

10.5 - 12.0 mi

Top 58%
×21story building
+280ft-26ft

Overall

3839

Males

2396

M25-29

562

12M→Finish

12.0 - 13.1 mi

Top 28%
×7story building
+14ft-89ft

Overall

1862

Males

1350

M25-29

327

Passing Analysis

Category:
▲Net Change
+0
0 passed by0* passed
SegmentMovementRank
Start → 2M-#2624
2M → 4M
12408+396
#2624 → #2228
4M → 6M
20175+155
#2228 → #2073
6M → 8M
5186*-512
#2073 → #2585
8M → 9.6M
17324+307
#2585 → #2278
9.6M → 10M
3824-14
#2278 → #2292
10M → 10.5M
128-4
#2292 → #2296
10.5M → 12M
26512-253
#2296 → #2549
12M → Finish
686*+80
#2549 → #2469
TOTALS
8881043*+155
#2624 → #2469

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Visualized

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

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