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SF MARATHON 2026

Mengchun Sun

Bib: 8971•F•Age: 34

santa clara, CA

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0:00
0:00
/ mi
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Overall
#0 / 7166
Gender (Female)
#0 / 2086
Division (F30-34)
#0 / 395
Race Day Weather
59°/49°F
scattered clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
2M
24:25
Rank: #6931
Start → 2M
24:25 | 12:12/mi
4M
49:07
Rank: #6846 (+85)
2M → 4M
24:42 | 12:21/mi
6M
1:13:51
Rank: #6745 (+101)
4M → 6M
24:44 | 12:22/mi
8M
1:37:49
Rank: #6749 (-4)
6M → 8M
23:58 | 11:59/mi
9.6M
1:57:46
Rank: #6605 (+144)
8M → 9.6M
19:57 | 12:28/mi
10M
2:01:45
Rank: #6638 (-33)
9.6M → 10M
3:59 | 9:58/mi
10.5M
2:09:43
Rank: #6579 (+59)
10M → 10.5M
7:58 | 15:56/mi
12M
2:27:02
Rank: #6469 (+110)
10.5M → 12M
17:19 | 11:33/mi
14M
2:52:17
Rank: #6355 (+114)
12M → 14M
25:15 | 12:37/mi
16M
3:11:35
Rank: #6136 (+219)
14M → 16M
19:18 | 9:39/mi
18M
3:40:27
Rank: #6179 (-43)
16M → 18M
28:52 | 14:26/mi
20M
4:05:40
Rank: #6116 (+63)
18M → 20M
25:13 | 12:36/mi
22M
4:29:02
Rank: #6011 (+105)
20M → 22M
23:22 | 11:41/mi
24M
4:56:25
Rank: #5959 (+52)
22M → 24M
27:23 | 13:42/mi
Finish· 26.22 mi
5:26:27
Rank: #5932 (+27)
24M → Finish
30:02 | 13:32/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st Half
via 14M
Distance14.00 mi
Time2:52:17
Pace12:18 /mi
2nd Half✓ Faster
Distance12.22 mi
Time2:34:10
Pace12:37 /mi
📊Negative Split: 10.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi05:58:2024:2512:1224:25
12:12
-
4M
4.00 mi06:23:0249:0712:1724:42
12:21
+0:09
6M
6.00 mi06:47:461:13:5112:1924:44
12:22
+0:01
8M
8.00 mi07:11:441:37:4912:1423:58
11:59
-0:23
9.6M
9.60 mi07:31:411:57:4612:1619:57
12:28
+0:29
10M
10.00 mi07:35:402:01:4512:113:59
9:58
-2:30
10.5M
10.50 mi07:43:382:09:4312:217:58
15:56
+5:58
12M
12.00 mi08:00:572:27:0212:1517:19
11:33
-4:23
14M
14.00 mi08:26:122:52:1712:1825:15
12:37
+1:04
16M
16.00 mi08:45:303:11:3511:5819:18
9:39
-2:58
18M
18.00 mi09:14:223:40:2712:1528:52
14:26
+4:47
20M
20.00 mi09:39:354:05:4012:1725:13
12:36
-1:50
22M
22.00 mi10:02:574:29:0212:1423:22
11:41
-0:55
24M
24.00 mi10:30:204:56:2512:2127:23
13:42
+2:01
Finish
26.22 mi11:00:225:26:2712:2830:02
13:32
-0:10

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

9:39 /mi

Average Pace

12:28 /mi

Slowest Pace

15:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

40:36

12% of race

Time at Steady Pace

3:11:36

59% of race

Time at Slower Pace

1:34:15

29% of race

Average Pace: 12:27 /mi

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

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
2M
2.00 mi05:58:2024:2512:1224:25
12:12
#6931
4M
4.00 mi06:23:0249:0712:1724:42
12:21
#6846
6M
6.00 mi06:47:461:13:5112:1924:44
12:22
#6745
8M
8.00 mi07:11:441:37:4912:1423:58
11:59
#6749
9.6M
9.60 mi07:31:411:57:4612:1619:57
12:28
#6605
10M
10.00 mi07:35:402:01:4512:113:59
9:58
#6638
10.5M
10.50 mi07:43:382:09:4312:217:58
15:56
#6579
12M
12.00 mi08:00:572:27:0212:1517:19
11:33
#6469
14M
14.00 mi08:26:122:52:1712:1825:15
12:37
#6355
16M
16.00 mi08:45:303:11:3511:5819:18
9:39
#6136
18M
18.00 mi09:14:223:40:2712:1528:52
14:26
#6179
20M
20.00 mi09:39:354:05:4012:1725:13
12:36
#6116
22M
22.00 mi10:02:574:29:0212:1423:22
11:41
#6011
24M
24.00 mi10:30:204:56:2512:2127:23
13:42
#5959
Finish
26.22 mi11:00:225:26:2712:2830:02
13:32
#5932
Faster pace
Steady pace
Slower pace
Garmin Challenge
Featured Segment

Garmin Challenge

The climb, presented by Garmin

Top 87%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

11:57

Segment Time

13:17/mi

Pace

0.90 mi

Distance

Overall

6245

Women

1709

Division

323

See the full Garmin Challenge leaderboard

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF30-34Seg. OverallSeg. FemalesSeg. F30-34
2M2.00 mi2.00 mi693119733715683(Top 79%)1474(Top 71%)282(Top 71%)
4M4.00 mi2.00 mi6846+851933+40362+96755(Top 94%)1904(Top 91%)356(Top 90%)
6M6.00 mi2.00 mi6745+1011887+46353+96558(Top 92%)1813(Top 87%)334(Top 85%)
8M8.00 mi2.00 mi6749-41888-1355-26682(Top 93%)1843(Top 88%)343(Top 87%)
9.6M9.60 mi1.60 mi6605+1441822+66342+135963(Top 83%)1590(Top 76%)302(Top 76%)
10M10.00 mi0.40 mi6638-331839-17343-16950(Top 97%)1983(Top 95%)374(Top 95%)
10.5M10.50 mi0.50 mi6579+591810+29340+35797(Top 81%)1552(Top 74%)288(Top 73%)
12M12.00 mi1.50 mi6469+1101769+41334+65683(Top 79%)1474(Top 71%)282(Top 71%)
14M14.00 mi2.00 mi6355+1141730+39322+125701(Top 80%)1489(Top 71%)281(Top 71%)
16M16.00 mi2.00 mi6136+2191650+80313+94292(Top 60%)1018(Top 49%)190(Top 48%)
18M18.00 mi2.00 mi6179-431672-22319-66230(Top 87%)1765(Top 85%)331(Top 84%)
20M20.00 mi2.00 mi6116+631647+25316+35395(Top 75%)1493(Top 72%)286(Top 72%)
22M22.00 mi2.00 mi6011+1051619+28311+54960(Top 69%)1374(Top 66%)259(Top 66%)
24M24.00 mi2.00 mi5959+521615+4308+35367(Top 75%)1531(Top 73%)295(Top 75%)
Finish26.22 mi2.22 mi5932+271617-23085773(Top 81%)1662(Top 80%)310(Top 78%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 79%
×1human
+6ft-11ft

Overall

5683

Females

1474

F30-34

286

2M→4M

2.0 - 4.0 mi

Top 94%
×4stories
+75ft-70ft

Overall

6755

Females

1904

F30-34

366

4M→6M

4.0 - 6.0 mi

Top 92%
×5stories
+71ft-18ft

Overall

6558

Females

1813

F30-34

342

6M→8M

6.0 - 8.0 mi

Top 93%
×9stories
+106ft-21ft

Overall

6682

Females

1843

F30-34

348

8M→9.6M

8.0 - 9.6 mi

Top 83%
×13stories
+117ft-177ft

Overall

5963

Females

1590

F30-34

306

9.6M→10M

9.6 - 10.0 mi

Top 97%
×1story
+17ft-12ft

Overall

6950

Females

1983

F30-34

381

10M→10.5M

10.0 - 10.5 mi

Top 81%
×9stories
+0ft-102ft

Overall

5797

Females

1552

F30-34

295

10.5M→12M

10.5 - 12.0 mi

Top 79%
×18stories
+304ft-125ft

Overall

5683

Females

1474

F30-34

286

12M→14M

12.0 - 14.0 mi

Top 80%
×9stories
+99ft-125ft

Overall

5701

Females

1489

F30-34

285

14M→16M

14.0 - 16.0 mi

Top 60%
×9stories
+124ft-78ft

Overall

4292

Females

1018

F30-34

194

16M→18M

16.0 - 18.0 mi

Top 87%
×8stories
+106ft-45ft

Overall

6230

Females

1765

F30-34

335

18M→20M

18.0 - 20.0 mi

Top 75%
×3stories
+52ft-26ft

Overall

5395

Females

1493

F30-34

290

20M→22M

20.0 - 22.0 mi

Top 69%
×21stories
+17ft-266ft

Overall

4960

Females

1374

F30-34

262

22M→24M

22.0 - 24.0 mi

Top 75%
×3stories
+70ft-85ft

Overall

5367

Females

1531

F30-34

297

24M→Finish

24.0 - 26.2 mi

Top 81%
~flat
+2ft-2ft

Overall

5773

Females

1662

F30-34

310

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1353*
Passed By
354
Net Change
+999
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#6931
2M → 4M121*36+85#6931#6846
4M → 6M131*30+101#6846#6745
6M → 8M39*43-4#6745#6749
8M → 9.6M154*10+144#6749#6605
9.6M → 10M437-33#6605#6638
10M → 10.5M656+59#6638#6579
10.5M → 12M1133+110#6579#6469
12M → 14M125*11+114#6469#6355
14M → 16M220*1+219#6355#6136
16M → 18M48*91-43#6136#6179
18M → 20M85*22+63#6179#6116
20M → 22M107*2+105#6116#6011
22M → 24M77*25+52#6011#5959
24M → Finish64*37+27#5959#5932
TOTALS1353*354+999

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

📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

Activity Data

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