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BOSTON MARATHON 2025

Ching Yu Ma

Bib: 15440•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 29%
Gender (Female)
#0 / 12228
Top 12%
Division (F18-39)
#0 / 5469
Top 22%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:47
Rank: #10716
Start → 5K
22:47 | 7:20/mi
10K· 6.21 mi
45:40
Rank: #10770 (-54)
5K → 10K
22:53 | 7:22/mi
15K· 9.32 mi
1:08:38
Rank: #10750 (+20)
10K → 15K
22:58 | 7:24/mi
20K· 12.43 mi
1:31:33
Rank: #10463 (+287)
15K → 20K
22:55 | 7:23/mi
Half· 13.11 mi
1:36:35
Rank: #10467 (-4)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:54:23
Rank: #10122 (+345)
Half → 25K
17:48 | 7:20/mi
30K· 18.64 mi
2:17:32
Rank: #9512 (+610)
25K → 30K
23:09 | 7:27/mi
20M
2:27:39
Rank: #9255 (+257)
30K → 20M
10:07 | 7:27/mi
21M
2:35:15
Rank: #8926 (+329)
20M → 21M
7:36 | 7:36/mi
35K· 21.75 mi
2:40:38
Rank: #8798 (+128)
21M → 35K
5:23 | 7:12/mi
23M
2:49:56
Rank: #8518 (+280)
35K → 23M
9:18 | 7:26/mi
24M
2:57:20
Rank: #8409 (+109)
23M → 24M
7:24 | 7:24/mi
40K· 24.85 mi
3:03:42
Rank: #8289 (+120)
24M → 40K
6:22 | 7:27/mi
25.2M
3:06:32
Rank: #8251 (+38)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:13:58
Rank: #8205 (+46)
25.2M → Finish
7:26 | 7:18/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:36:35
Pace7:22 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:37:23
Pace7:26 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:4622:477:2022:47
7:20
-
10K
6.21 mi11:17:3945:407:2122:53
7:22
+0:02
15K
9.32 mi11:40:371:08:387:2222:58
7:24
+0:02
20K
12.43 mi12:03:321:31:337:2222:55
7:23
-0:01
Half
13.11 mi12:08:341:36:357:225:02
7:23
0:00
25K
15.53 mi12:26:221:54:237:2217:48
7:20
-0:03
30K
18.64 mi12:49:312:17:327:2323:09
7:27
+0:07
20M
20.00 mi12:59:382:27:397:2310:07
7:27
0:00
21M
21.00 mi13:07:142:35:157:247:36
7:36
+0:09
35K
21.75 mi13:12:372:40:387:235:23
7:12
-0:24
23M
23.00 mi13:21:552:49:567:239:18
7:26
+0:14
24M
24.00 mi13:29:192:57:207:237:24
7:24
-0:02
40K
24.85 mi13:35:413:03:427:236:22
7:27
+0:03
25.2M
25.20 mi13:38:313:06:327:242:50
8:13
+0:46
Finish
26.22 mi13:45:573:13:587:247:26
7:18
-0:55

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

7:12 /mi

Average Pace

7:24 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:11:08

99% of race

Time at Steady Pace

2:50

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:24 /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 mi10:54:4622:477:2022:47
7:20
#10716
10K
6.21 mi11:17:3945:407:2122:53
7:22
#10770
15K
9.32 mi11:40:371:08:387:2222:58
7:24
#10750
20K
12.43 mi12:03:321:31:337:2222:55
7:23
#10463
Half
13.11 mi12:08:341:36:357:225:02
7:23
#10467
25K
15.53 mi12:26:221:54:237:2217:48
7:20
#10122
30K
18.64 mi12:49:312:17:327:2323:09
7:27
#9512
20M
20.00 mi12:59:382:27:397:2310:07
7:27
#9255
21M
21.00 mi13:07:142:35:157:247:36
7:36
#8926
35K
21.75 mi13:12:372:40:387:235:23
7:12
#8798
23M
23.00 mi13:21:552:49:567:239:18
7:26
#8518
24M
24.00 mi13:29:192:57:207:237:24
7:24
#8409
40K
24.85 mi13:35:413:03:427:236:22
7:27
#8289
25.2M
25.20 mi13:38:313:06:327:242:50
8:13
#8251
Finish
26.22 mi13:45:573:13:587:247:26
7:18
#8205
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi107162142214210806(Top 38%)2269(Top 19%)2269(Top 41%)
10K6.21 mi3.10 mi10770-542188-462188-4610879(Top 38%)2239(Top 18%)2239(Top 41%)
15K9.32 mi3.11 mi10750+202201-132201-1310806(Top 38%)2269(Top 19%)2269(Top 41%)
20K12.43 mi3.11 mi10463+2872080+1212080+1219695(Top 34%)1825(Top 15%)1825(Top 33%)
Half13.11 mi0.68 mi10467-42085-52085-510688(Top 38%)2253(Top 18%)2253(Top 41%)
25K15.53 mi2.42 mi10122+3451967+1181967+1188687(Top 31%)1493(Top 12%)1493(Top 27%)
30K18.64 mi3.11 mi9512+6101731+2361731+2367404(Top 26%)1170(Top 10%)1170(Top 21%)
20M20.00 mi1.36 mi9255+2571651+801651+806686(Top 24%)1038(Top 8%)1038(Top 19%)
21M21.00 mi1.00 mi8926+3291545+1061545+1065163(Top 18%)663(Top 5%)663(Top 12%)
35K21.75 mi0.75 mi8798+1281508+371508+376628(Top 23%)1152(Top 9%)1152(Top 21%)
23M23.00 mi1.25 mi8518+2801440+681440+686231(Top 22%)1110(Top 9%)1110(Top 20%)
24M24.00 mi1.00 mi8409+1091435+51435+57068(Top 25%)1482(Top 12%)1482(Top 27%)
40K24.85 mi0.85 mi8289+1201417+181417+186514(Top 23%)1342(Top 11%)1342(Top 25%)
25.2M25.20 mi0.35 mi8251+381416+11416+17209(Top 25%)1725(Top 14%)1725(Top 32%)
Finish26.22 mi1.02 mi8205+461438-221438-227764(Top 27%)1962(Top 16%)1962(Top 36%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10806

Females

2269

F18-39

2269

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10879

Females

2239

F18-39

2239

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10806

Females

2269

F18-39

2269

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9695

Females

1825

F18-39

1825

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10688

Females

2253

F18-39

2253

Half→25K

13.1 - 15.5 mi

Top 31%
×4stories
+66ft-88ft

Overall

8687

Females

1493

F18-39

1493

25K→30K

15.5 - 18.6 mi

Top 26%
×9stories
+181ft-148ft

Overall

7404

Females

1170

F18-39

1170

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6686

Females

1038

F18-39

1038

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

5163

Females

663

F18-39

663

21M→35K

21.0 - 21.8 mi

Top 23%
×7stories
+17ft-86ft

Overall

6628

Females

1152

F18-39

1152

35K→23M

21.8 - 23.0 mi

Top 22%
×5stories
+23ft-63ft

Overall

6231

Females

1110

F18-39

1110

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

7068

Females

1482

F18-39

1482

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6514

Females

1342

F18-39

1342

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7209

Females

1725

F18-39

1725

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7764

Females

1962

F18-39

1962

Passing Analysis

Category:
Athletes Passed
3173*
Passed By
662
Net Change
+2511
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10716
5K → 10K223277-54#10716#10770
10K → 15K176156+20#10770#10750
15K → 20K33447+287#10750#10463
20K → Half3539-4#10463#10467
Half → 25K36116+345#10467#10122
25K → 30K621*11+610#10122#9512
30K → 20M2614+257#9512#9255
20M → 21M3290+329#9255#8926
21M → 35K1346+128#8926#8798
35K → 23M2877+280#8798#8518
23M → 24M13829+109#8518#8409
24M → 40K13818+120#8409#8289
40K → 25.2M424+38#8289#8251
25.2M → Finish9448+46#8251#8205
TOTALS3173*662+2511

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

📊

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