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BOSTON MARATHON 2025

Xinyu Mu

Bib: 21147•F

CA

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 36%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:06
Rank: #21117
Start → 5K
27:06 | 8:43/mi
10K· 6.21 mi
54:05
Rank: #20939 (+178)
5K → 10K
26:59 | 8:41/mi
15K· 9.32 mi
1:20:50
Rank: #20596 (+343)
10K → 15K
26:45 | 8:37/mi
20K· 12.43 mi
1:48:21
Rank: #20519 (+77)
15K → 20K
27:31 | 8:51/mi
Half· 13.11 mi
1:54:15
Rank: #20498 (+21)
20K → Half
5:54 | 8:39/mi
25K· 15.53 mi
2:15:46
Rank: #20301 (+197)
Half → 25K
21:31 | 8:52/mi
30K· 18.64 mi
2:45:23
Rank: #20252 (+49)
25K → 30K
29:37 | 9:32/mi
20M
2:58:42
Rank: #20244 (+8)
30K → 20M
13:19 | 9:48/mi
21M
3:08:45
Rank: #20147 (+97)
20M → 21M
10:03 | 10:03/mi
35K· 21.75 mi
3:15:36
Rank: #20084 (+63)
21M → 35K
6:51 | 9:09/mi
23M
3:26:57
Rank: #19903 (+181)
35K → 23M
11:21 | 9:04/mi
24M
3:35:44
Rank: #19744 (+159)
23M → 24M
8:47 | 8:47/mi
40K· 24.85 mi
3:43:23
Rank: #19615 (+129)
24M → 40K
7:39 | 8:57/mi
25.2M
3:46:39
Rank: #19530 (+85)
40K → 25.2M
3:16 | 9:28/mi
Finish· 26.22 mi
3:55:06
Rank: #19358 (+172)
25.2M → Finish
8:27 | 8:18/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:15
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time2:00:51
Pace9:13 /mi
📊Positive Split: 5.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:2427:068:4327:06
8:43
-
10K
6.21 mi12:09:2354:058:4226:59
8:41
-0:02
15K
9.32 mi12:36:081:20:508:4026:45
8:37
-0:04
20K
12.43 mi13:03:391:48:218:4327:31
8:51
+0:14
Half
13.11 mi13:09:331:54:158:435:54
8:39
-0:12
25K
15.53 mi13:31:042:15:468:4421:31
8:52
+0:13
30K
18.64 mi14:00:412:45:238:5229:37
9:32
+0:40
20M
20.00 mi14:14:002:58:428:5613:19
9:48
+0:16
21M
21.00 mi14:24:033:08:458:5910:03
10:03
+0:15
35K
21.75 mi14:30:543:15:369:006:51
9:09
-0:54
23M
23.00 mi14:42:153:26:579:0011:21
9:04
-0:05
24M
24.00 mi14:51:023:35:448:598:47
8:47
-0:17
40K
24.85 mi14:58:413:43:238:597:39
8:57
+0:10
25.2M
25.20 mi15:01:573:46:399:003:16
9:28
+0:31
Finish
26.22 mi15:10:243:55:068:588:27
8:18
-1:10

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

8:18 /mi

Average Pace

8:58 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

35:12

15% of race

Time at Steady Pace

2:16:48

58% of race

Time at Slower Pace

1:03:06

27% of race

Average Pace: 8:58 /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 mi11:42:2427:068:4327:06
8:43
#21117
10K
6.21 mi12:09:2354:058:4226:59
8:41
#20939
15K
9.32 mi12:36:081:20:508:4026:45
8:37
#20596
20K
12.43 mi13:03:391:48:218:4327:31
8:51
#20519
Half
13.11 mi13:09:331:54:158:435:54
8:39
#20498
25K
15.53 mi13:31:042:15:468:4421:31
8:52
#20301
30K
18.64 mi14:00:412:45:238:5229:37
9:32
#20252
20M
20.00 mi14:14:002:58:428:5613:19
9:48
#20244
21M
21.00 mi14:24:033:08:458:5910:03
10:03
#20147
35K
21.75 mi14:30:543:15:369:006:51
9:09
#20084
23M
23.00 mi14:42:153:26:579:0011:21
9:04
#19903
24M
24.00 mi14:51:023:35:448:598:47
8:47
#19744
40K
24.85 mi14:58:413:43:238:597:39
8:57
#19615
25.2M
25.20 mi15:01:573:46:399:003:16
9:28
#19530
Finish
26.22 mi15:10:243:55:068:588:27
8:18
#19358
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi211178144814419990(Top 70%)7435(Top 61%)7435(Top 748%)
10K6.21 mi3.10 mi20939+1788022+1228022+12220795(Top 73%)7914(Top 65%)7914(Top 796%)
15K9.32 mi3.11 mi20596+3437807+2157807+21519990(Top 70%)7435(Top 61%)7435(Top 748%)
20K12.43 mi3.11 mi20519+777774+337774+3320261(Top 71%)7624(Top 62%)7624(Top 767%)
Half13.11 mi0.68 mi20498+217760+147760+1420086(Top 71%)7526(Top 62%)7526(Top 757%)
25K15.53 mi2.42 mi20301+1977661+997661+9919318(Top 68%)7155(Top 59%)7155(Top 720%)
30K18.64 mi3.11 mi20252+497674-137674-1320070(Top 71%)7692(Top 63%)7692(Top 774%)
20M20.00 mi1.36 mi20244+87691-177691-1720308(Top 71%)7966(Top 65%)7966(Top 801%)
21M21.00 mi1.00 mi20147+977665+267665+2618521(Top 65%)7073(Top 58%)7073(Top 712%)
35K21.75 mi0.75 mi20084+637642+237642+2319010(Top 67%)7461(Top 61%)7461(Top 751%)
23M23.00 mi1.25 mi19903+1817566+767566+7616656(Top 59%)6257(Top 51%)6257(Top 629%)
24M24.00 mi1.00 mi19744+1597505+617505+6116267(Top 57%)6093(Top 50%)6093(Top 613%)
40K24.85 mi0.85 mi19615+1297445+607445+6016048(Top 56%)6075(Top 50%)6075(Top 611%)
25.2M25.20 mi0.35 mi19530+857412+337412+3314562(Top 51%)5351(Top 44%)5351(Top 538%)
Finish26.22 mi1.02 mi19358+1727329+837329+8314916(Top 53%)5444(Top 45%)5444(Top 548%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

19990

Females

7435

F55-59

7435

5K→10K

3.1 - 6.2 mi

Top 73%
×5stories
+79ft-138ft

Overall

20795

Females

7914

F55-59

7914

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

19990

Females

7435

F55-59

7435

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

20261

Females

7624

F55-59

7624

20K→Half

12.4 - 13.1 mi

Top 71%
×2stories
+19ft-37ft

Overall

20086

Females

7526

F55-59

7526

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

19318

Females

7155

F55-59

7155

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

20070

Females

7692

F55-59

7692

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20308

Females

7966

F55-59

7966

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

18521

Females

7073

F55-59

7073

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

19010

Females

7461

F55-59

7461

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

16656

Females

6257

F55-59

6257

23M→24M

23.0 - 24.0 mi

Top 57%
×6stories
+12ft-82ft

Overall

16267

Females

6093

F55-59

6093

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

16048

Females

6075

F55-59

6075

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14562

Females

5351

F55-59

5351

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2stories
+22ft-21ft

Overall

14916

Females

5444

F55-59

5444

Passing Analysis

Category:
Athletes Passed
2650
Passed By
891
Net Change
+1759
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21117
5K → 10K383205+178#21117#20939
10K → 15K40865+343#20939#20596
15K → 20K219142+77#20596#20519
20K → Half4726+21#20519#20498
Half → 25K25457+197#20498#20301
25K → 30K255206+49#20301#20252
30K → 20M10092+8#20252#20244
20M → 21M13538+97#20244#20147
21M → 35K8926+63#20147#20084
35K → 23M19312+181#20084#19903
23M → 24M1689+159#19903#19744
24M → 40K1367+129#19744#19615
40K → 25.2M872+85#19615#19530
25.2M → Finish1764+172#19530#19358
TOTALS2650891+1759
📊

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