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BOSTON MARATHON 2025

Zheng Ma

Bib: 18848•F

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 45%
Masters (Masters Women)
#0 / 6759
Top 32%
Division (F45-49)
#0 / 1813
Top 39%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:54
Rank: #16718
Start → 5K
24:54 | 8:01/mi
10K· 6.21 mi
49:53
Rank: #16747 (-29)
5K → 10K
24:59 | 8:02/mi
15K· 9.32 mi
1:15:03
Rank: #16721 (+26)
10K → 15K
25:10 | 8:06/mi
20K· 12.43 mi
1:40:46
Rank: #16741 (-20)
15K → 20K
25:43 | 8:17/mi
Half· 13.11 mi
1:46:17
Rank: #16723 (+18)
20K → Half
5:31 | 8:05/mi
25K· 15.53 mi
2:06:27
Rank: #16575 (+148)
Half → 25K
20:10 | 8:19/mi
30K· 18.64 mi
2:33:46
Rank: #16527 (+48)
25K → 30K
27:19 | 8:48/mi
20M
2:45:54
Rank: #16476 (+51)
30K → 20M
12:08 | 8:56/mi
21M
2:55:24
Rank: #16397 (+79)
20M → 21M
9:30 | 9:30/mi
35K· 21.75 mi
3:01:48
Rank: #16348 (+49)
21M → 35K
6:24 | 8:33/mi
23M
3:12:44
Rank: #16201 (+147)
35K → 23M
10:56 | 8:44/mi
24M
3:21:17
Rank: #16120 (+81)
23M → 24M
8:33 | 8:33/mi
40K· 24.85 mi
3:28:47
Rank: #16083 (+37)
24M → 40K
7:30 | 8:46/mi
25.2M
3:32:08
Rank: #16060 (+23)
40K → 25.2M
3:21 | 9:43/mi
Finish· 26.22 mi
3:40:55
Rank: #16098 (-38)
25.2M → Finish
8:47 | 8:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:17
Pace8:06 /mi
2nd Half
Distance13.11 mi
Time1:54:38
Pace8:45 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4724:548:0124:54
8:01
-
10K
6.21 mi11:40:4649:538:0224:59
8:02
+0:01
15K
9.32 mi12:05:561:15:038:0325:10
8:06
+0:04
20K
12.43 mi12:31:391:40:468:0725:43
8:17
+0:11
Half
13.11 mi12:37:101:46:178:065:31
8:05
-0:12
25K
15.53 mi12:57:202:06:278:0820:10
8:19
+0:14
30K
18.64 mi13:24:392:33:468:1527:19
8:48
+0:29
20M
20.00 mi13:36:472:45:548:1812:08
8:56
+0:08
21M
21.00 mi13:46:172:55:248:219:30
9:30
+0:34
35K
21.75 mi13:52:413:01:488:226:24
8:33
-0:57
23M
23.00 mi14:03:373:12:448:2310:56
8:44
+0:11
24M
24.00 mi14:12:103:21:178:238:33
8:33
-0:11
40K
24.85 mi14:19:403:28:478:247:30
8:46
+0:13
25.2M
25.20 mi14:23:013:32:088:253:21
9:43
+0:57
Finish
26.22 mi14:31:483:40:558:268:47
8:37
-1:06

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

8:01 /mi

Average Pace

8:26 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:17

48% of race

Time at Steady Pace

1:02:20

28% of race

Time at Slower Pace

52:18

24% of race

Average Pace: 8:26 /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 mi11:15:4724:548:0124:54
8:01
#16718
10K
6.21 mi11:40:4649:538:0224:59
8:02
#16747
15K
9.32 mi12:05:561:15:038:0325:10
8:06
#16721
20K
12.43 mi12:31:391:40:468:0725:43
8:17
#16741
Half
13.11 mi12:37:101:46:178:065:31
8:05
#16723
25K
15.53 mi12:57:202:06:278:0820:10
8:19
#16575
30K
18.64 mi13:24:392:33:468:1527:19
8:48
#16527
20M
20.00 mi13:36:472:45:548:1812:08
8:56
#16476
21M
21.00 mi13:46:172:55:248:219:30
9:30
#16397
35K
21.75 mi13:52:413:01:488:226:24
8:33
#16348
23M
23.00 mi14:03:373:12:448:2310:56
8:44
#16201
24M
24.00 mi14:12:103:21:178:238:33
8:33
#16120
40K
24.85 mi14:19:403:28:478:247:30
8:46
#16083
25.2M
25.20 mi14:23:013:32:088:253:21
9:43
#16060
Finish
26.22 mi14:31:483:40:558:268:47
8:37
#16098
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi167185581558116748(Top 59%)5583(Top 46%)5583(Top 308%)
10K6.21 mi3.10 mi16747-295583-25583-216791(Top 59%)5586(Top 46%)5586(Top 308%)
15K9.32 mi3.11 mi16721+265560+235560+2316748(Top 59%)5583(Top 46%)5583(Top 308%)
20K12.43 mi3.11 mi16741-205583-235583-2316806(Top 59%)5667(Top 46%)5667(Top 313%)
Half13.11 mi0.68 mi16723+185575+85575+816568(Top 58%)5514(Top 45%)5514(Top 304%)
25K15.53 mi2.42 mi16575+1485509+665509+6616040(Top 56%)5335(Top 44%)5335(Top 294%)
30K18.64 mi3.11 mi16527+485540-315540-3116567(Top 58%)5783(Top 47%)5783(Top 319%)
20M20.00 mi1.36 mi16476+515541-15541-116420(Top 58%)5833(Top 48%)5833(Top 322%)
21M21.00 mi1.00 mi16397+795525+165525+1616097(Top 57%)5756(Top 47%)5756(Top 317%)
35K21.75 mi0.75 mi16348+495510+155510+1515823(Top 56%)5680(Top 46%)5680(Top 313%)
23M23.00 mi1.25 mi16201+1475466+445466+4414751(Top 52%)5201(Top 43%)5201(Top 287%)
24M24.00 mi1.00 mi16120+815448+185448+1814848(Top 52%)5303(Top 43%)5303(Top 292%)
40K24.85 mi0.85 mi16083+375453-55453-515051(Top 53%)5546(Top 45%)5546(Top 306%)
25.2M25.20 mi0.35 mi16060+235450+35450+315732(Top 55%)5943(Top 49%)5943(Top 328%)
Finish26.22 mi1.02 mi16098-385487-375487-3716975(Top 60%)6543(Top 54%)6543(Top 361%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21stories
+97ft-345ft

Overall

16748

Females

5583

F45-49

5583

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

16791

Females

5586

F45-49

5586

10K→15K

6.2 - 9.3 mi

Top 59%
×3stories
+67ft-78ft

Overall

16748

Females

5583

F45-49

5583

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

16806

Females

5667

F45-49

5667

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

16568

Females

5514

F45-49

5514

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

16040

Females

5335

F45-49

5335

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

16567

Females

5783

F45-49

5783

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

16420

Females

5833

F45-49

5833

20M→21M

20.0 - 21.0 mi

Top 57%
×8stories
+106ft-24ft

Overall

16097

Females

5756

F45-49

5756

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

15823

Females

5680

F45-49

5680

35K→23M

21.8 - 23.0 mi

Top 52%
×5stories
+23ft-63ft

Overall

14751

Females

5201

F45-49

5201

23M→24M

23.0 - 24.0 mi

Top 52%
×6stories
+12ft-82ft

Overall

14848

Females

5303

F45-49

5303

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

15051

Females

5546

F45-49

5546

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

15732

Females

5943

F45-49

5943

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2stories
+22ft-21ft

Overall

16975

Females

6543

F45-49

6543

Passing Analysis

Category:
Athletes Passed
2050
Passed By
1430
Net Change
+620
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16718
5K → 10K281310-29#16718#16747
10K → 15K219193+26#16747#16721
15K → 20K193213-20#16721#16741
20K → Half4325+18#16741#16723
Half → 25K22577+148#16723#16575
25K → 30K242194+48#16575#16527
30K → 20M13584+51#16527#16476
20M → 21M14970+79#16476#16397
21M → 35K8435+49#16397#16348
35K → 23M18134+147#16348#16201
23M → 24M11837+81#16201#16120
24M → 40K7740+37#16120#16083
40K → 25.2M4825+23#16083#16060
25.2M → Finish5593-38#16060#16098
TOTALS20501430+620
📊

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