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BOSTON MARATHON 2025

Xiaogui Zeng

Bib: 23352•F

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:07
Rank: #21139
Start → 5K
27:07 | 8:44/mi
10K· 6.21 mi
54:19
Rank: #21120 (+19)
5K → 10K
27:12 | 8:45/mi
15K· 9.32 mi
1:21:58
Rank: #21233 (-113)
10K → 15K
27:39 | 8:54/mi
20K· 12.43 mi
1:49:47
Rank: #21091 (+142)
15K → 20K
27:49 | 8:57/mi
Half· 13.11 mi
1:55:45
Rank: #21084 (+7)
20K → Half
5:58 | 8:45/mi
25K· 15.53 mi
2:17:14
Rank: #20784 (+300)
Half → 25K
21:29 | 8:52/mi
30K· 18.64 mi
2:45:56
Rank: #20379 (+405)
25K → 30K
28:42 | 9:14/mi
20M
2:58:29
Rank: #20191 (+188)
30K → 20M
12:33 | 9:14/mi
21M
3:08:21
Rank: #20030 (+161)
20M → 21M
9:52 | 9:52/mi
35K· 21.75 mi
3:14:49
Rank: #19920 (+110)
21M → 35K
6:28 | 8:39/mi
23M
3:26:01
Rank: #19693 (+227)
35K → 23M
11:12 | 8:57/mi
24M
3:34:49
Rank: #19552 (+141)
23M → 24M
8:48 | 8:48/mi
40K· 24.85 mi
3:42:25
Rank: #19413 (+139)
24M → 40K
7:36 | 8:53/mi
25.2M
3:45:44
Rank: #19327 (+86)
40K → 25.2M
3:19 | 9:37/mi
Finish· 26.22 mi
3:54:23
Rank: #19222 (+105)
25.2M → Finish
8:39 | 8:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:45
Pace8:50 /mi
2nd Half
Distance13.11 mi
Time1:58:38
Pace9:03 /mi
📊Positive Split: 2.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:1927:078:4427:07
8:44
-
10K
6.21 mi11:50:3154:198:4427:12
8:45
+0:01
15K
9.32 mi12:18:101:21:588:4827:39
8:54
+0:09
20K
12.43 mi12:45:591:49:478:5027:49
8:57
+0:03
Half
13.11 mi12:51:571:55:458:505:58
8:45
-0:12
25K
15.53 mi13:13:262:17:148:5021:29
8:52
+0:07
30K
18.64 mi13:42:082:45:568:5428:42
9:14
+0:22
20M
20.00 mi13:54:412:58:298:5512:33
9:14
0:00
21M
21.00 mi14:04:333:08:218:589:52
9:52
+0:38
35K
21.75 mi14:11:013:14:498:576:28
8:39
-1:13
23M
23.00 mi14:22:133:26:018:5711:12
8:57
+0:18
24M
24.00 mi14:31:013:34:498:578:48
8:48
-0:09
40K
24.85 mi14:38:373:42:258:577:36
8:53
+0:05
25.2M
25.20 mi14:41:563:45:448:573:19
9:37
+0:44
Finish
26.22 mi14:50:353:54:238:578:39
8:29
-1:08

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

8:29 /mi

Average Pace

8:57 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:41:12

94% of race

Time at Steady Pace

13:11

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:56 /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 mi11:23:1927:078:4427:07
8:44
#21139
10K
6.21 mi11:50:3154:198:4427:12
8:45
#21120
15K
9.32 mi12:18:101:21:588:4827:39
8:54
#21233
20K
12.43 mi12:45:591:49:478:5027:49
8:57
#21091
Half
13.11 mi12:51:571:55:458:505:58
8:45
#21084
25K
15.53 mi13:13:262:17:148:5021:29
8:52
#20784
30K
18.64 mi13:42:082:45:568:5428:42
9:14
#20379
20M
20.00 mi13:54:412:58:298:5512:33
9:14
#20191
21M
21.00 mi14:04:333:08:218:589:52
9:52
#20030
35K
21.75 mi14:11:013:14:498:576:28
8:39
#19920
23M
23.00 mi14:22:133:26:018:5711:12
8:57
#19693
24M
24.00 mi14:31:013:34:498:578:48
8:48
#19552
40K
24.85 mi14:38:373:42:258:577:36
8:53
#19413
25.2M
25.20 mi14:41:563:45:448:573:19
9:37
#19327
Finish
26.22 mi14:50:353:54:238:578:39
8:29
#19222
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi211398157815721570(Top 76%)8312(Top 68%)8312(Top 836%)
10K6.21 mi3.10 mi21120+198116+418116+4121180(Top 75%)8128(Top 66%)8128(Top 818%)
15K9.32 mi3.11 mi21233-1138165-498165-4921570(Top 76%)8312(Top 68%)8312(Top 836%)
20K12.43 mi3.11 mi21091+1428079+868079+8620738(Top 73%)7911(Top 65%)7911(Top 796%)
Half13.11 mi0.68 mi21084+78073+68073+620657(Top 73%)7842(Top 64%)7842(Top 789%)
25K15.53 mi2.42 mi20784+3007922+1517922+15119252(Top 68%)7118(Top 58%)7118(Top 716%)
30K18.64 mi3.11 mi20379+4057748+1747748+17418838(Top 66%)7033(Top 58%)7033(Top 708%)
20M20.00 mi1.36 mi20191+1887667+817667+8117983(Top 63%)6712(Top 55%)6712(Top 675%)
21M21.00 mi1.00 mi20030+1617589+787589+7817794(Top 63%)6691(Top 55%)6691(Top 673%)
35K21.75 mi0.75 mi19920+1107539+507539+5016407(Top 58%)6027(Top 49%)6027(Top 606%)
23M23.00 mi1.25 mi19693+2277446+937446+9315993(Top 56%)5893(Top 48%)5893(Top 593%)
24M24.00 mi1.00 mi19552+1417393+537393+5316360(Top 58%)6140(Top 50%)6140(Top 618%)
40K24.85 mi0.85 mi19413+1397328+657328+6515741(Top 55%)5925(Top 48%)5925(Top 596%)
25.2M25.20 mi0.35 mi19327+867293+357293+3515293(Top 54%)5734(Top 47%)5734(Top 577%)
Finish26.22 mi1.02 mi19222+1057258+357258+3516194(Top 57%)6138(Top 50%)6138(Top 618%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21stories
+97ft-345ft

Overall

21570

Females

8312

F55-59

8312

5K→10K

3.1 - 6.2 mi

Top 75%
×5stories
+79ft-138ft

Overall

21180

Females

8128

F55-59

8128

10K→15K

6.2 - 9.3 mi

Top 76%
×3stories
+67ft-78ft

Overall

21570

Females

8312

F55-59

8312

15K→20K

9.3 - 12.4 mi

Top 73%
×5stories
+106ft-86ft

Overall

20738

Females

7911

F55-59

7911

20K→Half

12.4 - 13.1 mi

Top 73%
×2stories
+19ft-37ft

Overall

20657

Females

7842

F55-59

7842

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

19252

Females

7118

F55-59

7118

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

18838

Females

7033

F55-59

7033

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

17983

Females

6712

F55-59

6712

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

17794

Females

6691

F55-59

6691

21M→35K

21.0 - 21.8 mi

Top 58%
×7stories
+17ft-86ft

Overall

16407

Females

6027

F55-59

6027

35K→23M

21.8 - 23.0 mi

Top 56%
×5stories
+23ft-63ft

Overall

15993

Females

5893

F55-59

5893

23M→24M

23.0 - 24.0 mi

Top 58%
×6stories
+12ft-82ft

Overall

16360

Females

6140

F55-59

6140

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15741

Females

5925

F55-59

5925

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

15293

Females

5734

F55-59

5734

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

16194

Females

6138

F55-59

6138

Passing Analysis

Category:
Athletes Passed
2753
Passed By
836
Net Change
+1917
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21139
5K → 10K291272+19#21139#21120
10K → 15K168281-113#21120#21233
15K → 20K265123+142#21233#21091
20K → Half3528+7#21091#21084
Half → 25K32020+300#21084#20784
25K → 30K44237+405#20784#20379
30K → 20M20416+188#20379#20191
20M → 21M18120+161#20191#20030
21M → 35K1166+110#20030#19920
35K → 23M2325+227#19920#19693
23M → 24M1509+141#19693#19552
24M → 40K1445+139#19552#19413
40K → 25.2M893+86#19413#19327
25.2M → Finish11611+105#19327#19222
TOTALS2753836+1917
📊

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