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BOSTON MARATHON 2025

Yuchun Hsiao

Bib: 20807•F

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:05/mi
25:08
↑ 97↓ 3451.5%
10K· 6.21 mi
8:06/mi
50:19
↑ 79↓ 1380.4%
15K· 9.32 mi
8:14/mi
1:15:53
↑ 67↓ 78
20K· 12.43 mi
8:37/mi
1:42:38
↑ 106↓ 860.1%
Half· 13.11 mi
8:39/mi
1:48:32
↑ 19↓ 370.5%
25K· 15.53 mi
9:26/mi
2:11:24
↑ 66↓ 880.2%
30K· 18.64 mi
10:32/mi
2:44:07
↑ 181↓ 1480.2%
20M
10:25/mi
2:58:16
↑ 64↓ 500.2%
21M
11:47/mi
3:10:03
↑ 106↓ 241.6%
35K· 21.75 mi
10:04/mi
3:17:35
↑ 17↓ 861.7%
23M
10:52/mi
3:31:11
↑ 23↓ 630.6%
24M
10:21/mi
3:41:32
↓ 821.3%
40K· 24.85 mi
10:57/mi
3:50:54
↓ 200.3%
25.2M
11:33/mi
3:54:53
↑ 13↓ 160.2%
Finish· 26.22 mi
9:57/mi
4:05:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:32
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time2:16:29
Pace10:25 /mi
📊Positive Split: 25.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:5325:088:0525:08
8:05
-
10K
6.21 mi11:44:0450:198:0625:11
8:06
+0:01
15K
9.32 mi12:09:381:15:538:0825:34
8:14
+0:08
20K
12.43 mi12:36:231:42:388:1626:45
8:37
+0:23
Half
13.11 mi12:42:171:48:328:175:54
8:39
+0:02
25K
15.53 mi13:05:092:11:248:2822:52
9:26
+0:47
30K
18.64 mi13:37:522:44:078:4832:43
10:32
+1:06
20M
20.00 mi13:52:012:58:168:5514:09
10:25
-0:07
21M
21.00 mi14:03:483:10:039:0311:47
11:47
+1:22
35K
21.75 mi14:11:203:17:359:057:32
10:04
-1:43
23M
23.00 mi14:24:563:31:119:1113:36
10:52
+0:48
24M
24.00 mi14:35:173:41:329:1410:21
10:21
-0:31
40K
24.85 mi14:44:393:50:549:179:22
10:57
+0:36
25.2M
25.20 mi14:48:383:54:539:193:59
11:33
+0:36
Finish
26.22 mi14:58:464:05:019:2110:08
9:57
-1:36

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

9:21 /mi

Slowest Pace

11:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:11:24

54% of race

Time at Steady Pace

1:14:53

31% of race

Time at Slower Pace

38:44

16% of race

Average Pace: 9:21 /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 mi11:18:5325:088:0525:08
8:05
#17292
10K
6.21 mi11:44:0450:198:0625:11
8:06
#17250
15K
9.32 mi12:09:381:15:538:0825:34
8:14
#17374
20K
12.43 mi12:36:231:42:388:1626:45
8:37
#17754
Half
13.11 mi12:42:171:48:328:175:54
8:39
#17852
25K
15.53 mi13:05:092:11:248:2822:52
9:26
#18651
30K
18.64 mi13:37:522:44:078:4832:43
10:32
#19889
20M
20.00 mi13:52:012:58:168:5514:09
10:25
#20147
21M
21.00 mi14:03:483:10:039:0311:47
11:47
#20435
35K
21.75 mi14:11:203:17:359:057:32
10:04
#20524
23M
23.00 mi14:24:563:31:119:1113:36
10:52
#20745
24M
24.00 mi14:35:173:41:329:1410:21
10:21
#20868
40K
24.85 mi14:44:393:50:549:179:22
10:57
#20963
25.2M
25.20 mi14:48:383:54:539:193:59
11:33
#20979
Finish
26.22 mi14:58:464:05:019:2110:08
9:57
#21053
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi172925918591817596(Top 62%)6076(Top 50%)6076(Top 335%)
10K6.21 mi3.10 mi17250+425879+395879+3917263(Top 61%)5867(Top 48%)5867(Top 324%)
15K9.32 mi3.11 mi17374-1245939-605939-6017596(Top 62%)6076(Top 50%)6076(Top 335%)
20K12.43 mi3.11 mi17754-3806194-2556194-25518921(Top 67%)6873(Top 56%)6873(Top 379%)
Half13.11 mi0.68 mi17852-986260-666260-6620118(Top 71%)7558(Top 62%)7558(Top 417%)
25K15.53 mi2.42 mi18651-7996722-4626722-46221656(Top 76%)8457(Top 69%)8457(Top 466%)
30K18.64 mi3.11 mi19889-12387457-7357457-73523000(Top 81%)9321(Top 76%)9321(Top 514%)
20M20.00 mi1.36 mi20147-2587638-1817638-18122187(Top 78%)9002(Top 74%)9002(Top 497%)
21M21.00 mi1.00 mi20435-2887818-1807818-18023186(Top 82%)9593(Top 78%)9593(Top 529%)
35K21.75 mi0.75 mi20524-897879-617879-6122109(Top 78%)9088(Top 74%)9088(Top 501%)
23M23.00 mi1.25 mi20745-2218020-1418020-14122911(Top 81%)9550(Top 78%)9550(Top 527%)
24M24.00 mi1.00 mi20868-1238109-898109-8922402(Top 79%)9338(Top 76%)9338(Top 515%)
40K24.85 mi0.85 mi20963-958180-718180-7123048(Top 81%)9728(Top 80%)9728(Top 537%)
25.2M25.20 mi0.35 mi20979-168200-208200-2022200(Top 78%)9250(Top 76%)9250(Top 510%)
Finish26.22 mi1.02 mi21053-748255-558255-5522766(Top 80%)9550(Top 78%)9550(Top 527%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

17596

Females

6076

F45-49

6076

5K→10K

3.1 - 6.2 mi

Top 61%
×5story building
+79ft-138ft

Overall

17263

Females

5867

F45-49

5867

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

17596

Females

6076

F45-49

6076

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

18921

Females

6873

F45-49

6873

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

20118

Females

7558

F45-49

7558

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

21656

Females

8457

F45-49

8457

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

23000

Females

9321

F45-49

9321

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

22187

Females

9002

F45-49

9002

20M→21M

20.0 - 21.0 mi

Top 82%
×8story building
+106ft-24ft

Overall

23186

Females

9593

F45-49

9593

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

22109

Females

9088

F45-49

9088

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

22911

Females

9550

F45-49

9550

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

22402

Females

9338

F45-49

9338

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

23048

Females

9728

F45-49

9728

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22200

Females

9250

F45-49

9250

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

22766

Females

9550

F45-49

9550

Passing Analysis

Category:
Athletes Passed
908
Passed By
4669
Net Change
-3761
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17292
5K → 10K324282+42#17292#17250
10K → 15K161285-124#17250#17374
15K → 20K96476-380#17374#17754
20K → Half13111-98#17754#17852
Half → 25K29828-799#17852#18651
25K → 30K341272-1238#18651#19889
30K → 20M53311-258#19889#20147
20M → 21M23311-288#20147#20435
21M → 35K37126-89#20435#20524
35K → 23M41262-221#20524#20745
23M → 24M28151-123#20745#20868
24M → 40K24119-95#20868#20963
40K → 25.2M2238-16#20963#20979
25.2M → Finish2397-74#20979#21053
TOTALS9084669-3761
📊

Passing Visuals

Category:
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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