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BOSTON MARATHON 2025

Shan Gao

Bib: 13727•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:22
Rank: #17875
Start → 5K
8:10/mi
25:22 split
10K· 6.21 mi
53:03
Rank: #20070 (-2195)
5K → 10K
8:55/mi
27:41 split
15K· 9.32 mi
1:22:23
Rank: #21481 (-1411)
10K → 15K
9:26/mi
29:20 split
20K· 12.43 mi
1:53:17
Rank: #22429 (-948)
15K → 20K
9:57/mi
30:54 split
Half· 13.11 mi
1:59:46
Rank: #22512 (-83)
20K → Half
9:30/mi
6:29 split
25K· 15.53 mi
2:25:01
Rank: #22911 (-399)
Half → 25K
10:25/mi
25:15 split
30K· 18.64 mi
2:59:20
Rank: #23152 (-241)
25K → 30K
11:03/mi
34:19 split
20M
3:14:21
Rank: #23202 (-50)
30K → 20M
11:03/mi
15:01 split
21M
3:26:10
Rank: #23197 (+5)
20M → 21M
11:49/mi
11:49 split
35K· 21.75 mi
3:33:58
Rank: #23186 (+11)
21M → 35K
10:26/mi
7:48 split
23M
3:47:13
Rank: #23134 (+52)
35K → 23M
10:35/mi
13:15 split
24M
3:57:27
Rank: #23084 (+50)
23M → 24M
10:14/mi
10:14 split
40K· 24.85 mi
4:06:22
Rank: #23023 (+61)
24M → 40K
10:26/mi
8:55 split
25.2M
4:10:14
Rank: #23010 (+13)
40K → 25.2M
11:13/mi
3:52 split
Finish· 26.22 mi
4:19:45
Rank: #22927 (+83)
25.2M → Finish
9:20/mi
9:31 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:46
Pace9:08 /mi
2nd Half
Distance13.11 mi
Time2:19:59
Pace10:41 /mi
📊Positive Split: 16.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:0925:228:1025:22
8:10
-
10K
6.21 mi11:21:5053:038:3227:41
8:55
+0:45
15K
9.32 mi11:51:101:22:238:5029:20
9:26
+0:31
20K
12.43 mi12:22:041:53:179:0730:54
9:57
+0:31
Half
13.11 mi12:28:331:59:469:086:29
9:30
-0:27
25K
15.53 mi12:53:482:25:019:2025:15
10:25
+0:55
30K
18.64 mi13:28:072:59:209:3734:19
11:03
+0:38
20M
20.00 mi13:43:083:14:219:4315:01
11:03
0:00
21M
21.00 mi13:54:573:26:109:4911:49
11:49
+0:46
35K
21.75 mi14:02:453:33:589:507:48
10:26
-1:23
23M
23.00 mi14:16:003:47:139:5313:15
10:35
+0:09
24M
24.00 mi14:26:143:57:279:5410:14
10:14
-0:21
40K
24.85 mi14:35:094:06:229:558:55
10:26
+0:12
25.2M
25.20 mi14:39:014:10:149:563:52
11:13
+0:47
Finish
26.22 mi14:48:324:19:459:559:31
9:20
-1:53

Checkpoints & Pacing

📈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

8:10 /mi

Average Pace

9:55 /mi

Slowest Pace

11:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:17

50% of race

Time at Steady Pace

1:05:27

25% of race

Time at Slower Pace

1:05:01

25% of race

Average Pace: 9:54 /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

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:54:0925:228:1025:22
8:10
#17875
10K
6.21 mi11:21:5053:038:3227:41
8:55
#20070
15K
9.32 mi11:51:101:22:238:5029:20
9:26
#21481
20K
12.43 mi12:22:041:53:179:0730:54
9:57
#22429
Half
13.11 mi12:28:331:59:469:086:29
9:30
#22512
25K
15.53 mi12:53:482:25:019:2025:15
10:25
#22911
30K
18.64 mi13:28:072:59:209:3734:19
11:03
#23152
20M
20.00 mi13:43:083:14:219:4315:01
11:03
#23202
21M
21.00 mi13:54:573:26:109:4911:49
11:49
#23197
35K
21.75 mi14:02:453:33:589:507:48
10:26
#23186
23M
23.00 mi14:16:003:47:139:5313:15
10:35
#23134
24M
24.00 mi14:26:143:57:279:5410:14
10:14
#23084
40K
24.85 mi14:35:094:06:229:558:55
10:26
#23023
25.2M
25.20 mi14:39:014:10:149:563:52
11:13
#23010
Finish
26.22 mi14:48:324:19:459:559:31
9:20
#22927
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi178756269626923583(Top 83%)9425(Top 77%)9425(Top 172%)
10K6.21 mi3.10 mi20070-21957514-12457514-124521992(Top 77%)8595(Top 70%)8595(Top 157%)
15K9.32 mi3.11 mi21481-14118293-7798293-77923583(Top 83%)9425(Top 77%)9425(Top 172%)
20K12.43 mi3.11 mi22429-9488830-5378830-53724122(Top 85%)9778(Top 80%)9778(Top 179%)
Half13.11 mi0.68 mi22512-838870-408870-4023596(Top 83%)9483(Top 78%)9483(Top 173%)
25K15.53 mi2.42 mi22911-3999093-2239093-22324208(Top 85%)9855(Top 81%)9855(Top 180%)
30K18.64 mi3.11 mi23152-2419276-1839276-18324081(Top 85%)9905(Top 81%)9905(Top 181%)
20M20.00 mi1.36 mi23202-509314-389314-3823693(Top 83%)9785(Top 80%)9785(Top 179%)
21M21.00 mi1.00 mi23197+59334-209334-2023257(Top 82%)9635(Top 79%)9635(Top 176%)
35K21.75 mi0.75 mi23186+119332+29332+223019(Top 81%)9566(Top 78%)9566(Top 175%)
23M23.00 mi1.25 mi23134+529342-109342-1022230(Top 78%)9186(Top 75%)9186(Top 168%)
24M24.00 mi1.00 mi23084+509334+89334+822057(Top 78%)9166(Top 75%)9166(Top 168%)
40K24.85 mi0.85 mi23023+619318+169318+1621737(Top 77%)9062(Top 74%)9062(Top 166%)
25.2M25.20 mi0.35 mi23010+139314+49314+421320(Top 75%)8830(Top 72%)8830(Top 161%)
Finish26.22 mi1.02 mi22927+839281+339281+3320574(Top 72%)8441(Top 69%)8441(Top 154%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23583

Females

9425

F18-39

9425

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

21992

Females

8595

F18-39

8595

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23583

Females

9425

F18-39

9425

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

24122

Females

9778

F18-39

9778

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

23596

Females

9483

F18-39

9483

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

24208

Females

9855

F18-39

9855

25K→30K

15.5 - 18.6 mi

Top 85%
×9stories
+181ft-148ft

Overall

24081

Females

9905

F18-39

9905

30K→20M

18.6 - 20.0 mi

Top 83%
×5stories
+64ft-50ft

Overall

23693

Females

9785

F18-39

9785

20M→21M

20.0 - 21.0 mi

Top 82%
×8stories
+106ft-24ft

Overall

23257

Females

9635

F18-39

9635

21M→35K

21.0 - 21.8 mi

Top 81%
×7stories
+17ft-86ft

Overall

23019

Females

9566

F18-39

9566

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

22230

Females

9186

F18-39

9186

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

22057

Females

9166

F18-39

9166

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21737

Females

9062

F18-39

9062

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

21320

Females

8830

F18-39

8830

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2stories
+22ft-21ft

Overall

20574

Females

8441

F18-39

8441

Passing Analysis

Category:
Athletes Passed
767
Passed By
5819
Net Change
-5052
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17875
5K → 10K122207-2195#17875#20070
10K → 15K221433-1411#20070#21481
15K → 20K35983-948#21481#22429
20K → Half1497-83#22429#22512
Half → 25K56455-399#22512#22911
25K → 30K94335-241#22911#23152
30K → 20M57107-50#23152#23202
20M → 21M7065+5#23202#23197
21M → 35K4332+11#23197#23186
35K → 23M9947+52#23186#23134
23M → 24M7525+50#23134#23084
24M → 40K7918+61#23084#23023
40K → 25.2M218+13#23023#23010
25.2M → Finish907+83#23010#22927
TOTALS7675819-5052
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing