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BOSTON MARATHON 2025

Xiangfei Zeng

Bib: 24707•F

PA

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 39%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:08
Rank: #17291
Start → 5K
25:08 | 8:05/mi
10K· 6.21 mi
50:44
Rank: #17739 (-448)
5K → 10K
25:36 | 8:14/mi
15K· 9.32 mi
1:17:08
Rank: #18250 (-511)
10K → 15K
26:24 | 8:30/mi
20K· 12.43 mi
1:44:40
Rank: #18793 (-543)
15K → 20K
27:32 | 8:52/mi
Half· 13.11 mi
1:50:41
Rank: #18915 (-122)
20K → Half
6:01 | 8:49/mi
25K· 15.53 mi
2:12:40
Rank: #19165 (-250)
Half → 25K
21:59 | 9:04/mi
30K· 18.64 mi
2:42:36
Rank: #19456 (-291)
25K → 30K
29:56 | 9:38/mi
20M
2:55:37
Rank: #19469 (-13)
30K → 20M
13:01 | 9:35/mi
21M
3:05:57
Rank: #19457 (+12)
20M → 21M
10:20 | 10:20/mi
35K· 21.75 mi
3:12:50
Rank: #19455 (+2)
21M → 35K
6:53 | 9:12/mi
23M
3:25:08
Rank: #19510 (-55)
35K → 23M
12:18 | 9:49/mi
24M
3:34:48
Rank: #19549 (-39)
23M → 24M
9:40 | 9:40/mi
40K· 24.85 mi
3:43:26
Rank: #19631 (-82)
24M → 40K
8:38 | 10:06/mi
25.2M
3:47:10
Rank: #19637 (-6)
40K → 25.2M
3:44 | 10:50/mi
Finish· 26.22 mi
3:56:49
Rank: #19710 (-73)
25.2M → Finish
9:39 | 9:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:41
Pace8:27 /mi
2nd Half
Distance13.11 mi
Time2:06:08
Pace9:37 /mi
📊Positive Split: 14.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:40:2725:088:0525:08
8:05
-
10K
6.21 mi12:06:0350:448:1025:36
8:14
+0:09
15K
9.32 mi12:32:271:17:088:1726:24
8:30
+0:16
20K
12.43 mi12:59:591:44:408:2527:32
8:52
+0:22
Half
13.11 mi13:06:001:50:418:276:01
8:49
-0:03
25K
15.53 mi13:27:592:12:408:3221:59
9:04
+0:15
30K
18.64 mi13:57:552:42:368:4329:56
9:38
+0:34
20M
20.00 mi14:10:562:55:378:4713:01
9:35
-0:03
21M
21.00 mi14:21:163:05:578:5110:20
10:20
+0:45
35K
21.75 mi14:28:093:12:508:526:53
9:12
-1:08
23M
23.00 mi14:40:273:25:088:5512:18
9:49
+0:37
24M
24.00 mi14:50:073:34:488:579:40
9:40
-0:09
40K
24.85 mi14:58:453:43:268:598:38
10:06
+0:26
25.2M
25.20 mi15:02:293:47:109:013:44
10:50
+0:44
Finish
26.22 mi15:12:083:56:499:029:39
9:28
-1:22

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

8:05 /mi

Average Pace

9:02 /mi

Slowest Pace

10:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:12:40

56% of race

Time at Steady Pace

1:21:27

34% of race

Time at Slower Pace

22:42

10% of race

Average Pace: 9:02 /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 mi11:40:2725:088:0525:08
8:05
#17291
10K
6.21 mi12:06:0350:448:1025:36
8:14
#17739
15K
9.32 mi12:32:271:17:088:1726:24
8:30
#18250
20K
12.43 mi12:59:591:44:408:2527:32
8:52
#18793
Half
13.11 mi13:06:001:50:418:276:01
8:49
#18915
25K
15.53 mi13:27:592:12:408:3221:59
9:04
#19165
30K
18.64 mi13:57:552:42:368:4329:56
9:38
#19456
20M
20.00 mi14:10:562:55:378:4713:01
9:35
#19469
21M
21.00 mi14:21:163:05:578:5110:20
10:20
#19457
35K
21.75 mi14:28:093:12:508:526:53
9:12
#19455
23M
23.00 mi14:40:273:25:088:5512:18
9:49
#19510
24M
24.00 mi14:50:073:34:488:579:40
9:40
#19549
40K
24.85 mi14:58:453:43:268:598:38
10:06
#19631
25.2M
25.20 mi15:02:293:47:109:013:44
10:50
#19637
Finish
26.22 mi15:12:083:56:499:029:39
9:28
#19710
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi172915917591719320(Top 68%)7078(Top 58%)7078(Top 712%)
10K6.21 mi3.10 mi17739-4486167-2506167-25018183(Top 64%)6412(Top 52%)6412(Top 645%)
15K9.32 mi3.11 mi18250-5116477-3106477-31019320(Top 68%)7078(Top 58%)7078(Top 712%)
20K12.43 mi3.11 mi18793-5436784-3076784-30720288(Top 71%)7640(Top 62%)7640(Top 769%)
Half13.11 mi0.68 mi18915-1226856-726856-7221011(Top 74%)8044(Top 66%)8044(Top 809%)
25K15.53 mi2.42 mi19165-2507007-1517007-15120214(Top 71%)7653(Top 63%)7653(Top 770%)
30K18.64 mi3.11 mi19456-2917215-2087215-20820495(Top 72%)7928(Top 65%)7928(Top 798%)
20M20.00 mi1.36 mi19469-137247-327247-3219536(Top 69%)7545(Top 62%)7545(Top 759%)
21M21.00 mi1.00 mi19457+127265-187265-1819502(Top 69%)7619(Top 62%)7619(Top 766%)
35K21.75 mi0.75 mi19455+27276-117276-1119196(Top 68%)7556(Top 62%)7556(Top 760%)
23M23.00 mi1.25 mi19510-557349-737349-7319887(Top 70%)7991(Top 65%)7991(Top 804%)
24M24.00 mi1.00 mi19549-397392-437392-4320282(Top 71%)8229(Top 67%)8229(Top 828%)
40K24.85 mi0.85 mi19631-827457-657457-6520778(Top 73%)8547(Top 70%)8547(Top 860%)
25.2M25.20 mi0.35 mi19637-67472-157472-1520140(Top 71%)8230(Top 67%)8230(Top 828%)
Finish26.22 mi1.02 mi19710-737523-517523-5121071(Top 74%)8688(Top 71%)8688(Top 874%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21stories
+97ft-345ft

Overall

19320

Females

7078

F55-59

7078

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

18183

Females

6412

F55-59

6412

10K→15K

6.2 - 9.3 mi

Top 68%
×3stories
+67ft-78ft

Overall

19320

Females

7078

F55-59

7078

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

20288

Females

7640

F55-59

7640

20K→Half

12.4 - 13.1 mi

Top 74%
×2stories
+19ft-37ft

Overall

21011

Females

8044

F55-59

8044

Half→25K

13.1 - 15.5 mi

Top 71%
×4stories
+66ft-88ft

Overall

20214

Females

7653

F55-59

7653

25K→30K

15.5 - 18.6 mi

Top 72%
×9stories
+181ft-148ft

Overall

20495

Females

7928

F55-59

7928

30K→20M

18.6 - 20.0 mi

Top 69%
×5stories
+64ft-50ft

Overall

19536

Females

7545

F55-59

7545

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

19502

Females

7619

F55-59

7619

21M→35K

21.0 - 21.8 mi

Top 68%
×7stories
+17ft-86ft

Overall

19196

Females

7556

F55-59

7556

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

19887

Females

7991

F55-59

7991

23M→24M

23.0 - 24.0 mi

Top 71%
×6stories
+12ft-82ft

Overall

20282

Females

8229

F55-59

8229

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20778

Females

8547

F55-59

8547

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20140

Females

8230

F55-59

8230

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

21071

Females

8688

F55-59

8688

Passing Analysis

Category:
Athletes Passed
1024
Passed By
3443
Net Change
-2419
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17291
5K → 10K137585-448#17291#17739
10K → 15K68579-511#17739#18250
15K → 20K73616-543#18250#18793
20K → Half8130-122#18793#18915
Half → 25K105355-250#18915#19165
25K → 30K138429-291#19165#19456
30K → 20M111124-13#19456#19469
20M → 21M9785+12#19469#19457
21M → 35K5957+2#19457#19455
35K → 23M76131-55#19455#19510
23M → 24M5190-39#19510#19549
24M → 40K38120-82#19549#19631
40K → 25.2M3238-6#19631#19637
25.2M → Finish31104-73#19637#19710
TOTALS10243443-2419
📊

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