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BOSTON MARATHON 2025

Huihsien Hsu

Bib: 21243•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
8:21/mi
25:57
↑ 97↓ 3451.5%
10K· 6.21 mi
8:32/mi
52:29
↑ 79↓ 1380.4%
15K· 9.32 mi
9:03/mi
1:20:36
↑ 67↓ 78
20K· 12.43 mi
8:57/mi
1:48:23
↑ 106↓ 860.1%
Half· 13.11 mi
9:07/mi
1:54:36
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:15:55
↑ 66↓ 880.2%
30K· 18.64 mi
9:11/mi
2:44:28
↑ 181↓ 1480.2%
20M
9:13/mi
2:56:59
↑ 64↓ 500.2%
21M
9:54/mi
3:06:53
↑ 106↓ 241.6%
35K· 21.75 mi
9:56/mi
3:14:19
↑ 17↓ 861.7%
23M
9:04/mi
3:25:40
↑ 23↓ 630.6%
24M
8:56/mi
3:34:36
↓ 821.3%
40K· 24.85 mi
9:24/mi
3:42:38
↓ 200.3%
25.2M
10:03/mi
3:46:06
↑ 13↓ 160.2%
Finish· 26.22 mi
8:46/mi
3:55:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:36
Pace8:44 /mi
2nd Half
Distance13.11 mi
Time2:00:26
Pace9:11 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:3925:578:2125:57
8:21
-
10K
6.21 mi11:49:1152:298:2726:32
8:32
+0:11
15K
9.32 mi12:17:181:20:368:3928:07
9:03
+0:31
20K
12.43 mi12:45:051:48:238:4327:47
8:57
-0:06
Half
13.11 mi12:51:181:54:368:446:13
9:07
+0:10
25K
15.53 mi13:12:372:15:558:4521:19
8:48
-0:19
30K
18.64 mi13:41:102:44:288:4928:33
9:11
+0:23
20M
20.00 mi13:53:412:56:598:5112:31
9:13
+0:02
21M
21.00 mi14:03:353:06:538:549:54
9:54
+0:41
35K
21.75 mi14:11:013:14:198:567:26
9:56
+0:02
23M
23.00 mi14:22:223:25:408:5711:21
9:04
-0:52
24M
24.00 mi14:31:183:34:368:578:56
8:56
-0:08
40K
24.85 mi14:39:203:42:388:578:02
9:24
+0:28
25.2M
25.20 mi14:42:483:46:068:583:28
10:03
+0:39
Finish
26.22 mi14:51:443:55:028:588:56
8:46
-1:17

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

8:21 /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

1:22:44

35% of race

Time at Steady Pace

2:03:28

53% of race

Time at Slower Pace

28:50

12% 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 mi11:22:3925:578:2125:57
8:21
#19044
10K
6.21 mi11:49:1152:298:2726:32
8:32
#19525
15K
9.32 mi12:17:181:20:368:3928:07
9:03
#20472
20K
12.43 mi12:45:051:48:238:4327:47
8:57
#20537
Half
13.11 mi12:51:181:54:368:446:13
9:07
#20636
25K
15.53 mi13:12:372:15:558:4521:19
8:48
#20357
30K
18.64 mi13:41:102:44:288:4928:33
9:11
#20004
20M
20.00 mi13:53:412:56:598:5112:31
9:13
#19831
21M
21.00 mi14:03:353:06:538:549:54
9:54
#19707
35K
21.75 mi14:11:013:14:198:567:26
9:56
#19800
23M
23.00 mi14:22:223:25:408:5711:21
9:04
#19619
24M
24.00 mi14:31:183:34:368:578:56
8:56
#19519
40K
24.85 mi14:39:203:42:388:578:02
9:24
#19459
25.2M
25.20 mi14:42:483:46:068:583:28
10:03
#19415
Finish
26.22 mi14:51:443:55:028:588:56
8:46
#19342
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi190446935693522253(Top 78%)8693(Top 71%)8693(Top 479%)
10K6.21 mi3.10 mi19525-4817198-2637198-26320045(Top 71%)7490(Top 61%)7490(Top 413%)
15K9.32 mi3.11 mi20472-9477736-5387736-53822253(Top 78%)8693(Top 71%)8693(Top 479%)
20K12.43 mi3.11 mi20537-657781-457781-4520686(Top 73%)7882(Top 64%)7882(Top 435%)
Half13.11 mi0.68 mi20636-997836-557836-5522259(Top 78%)8741(Top 71%)8741(Top 482%)
25K15.53 mi2.42 mi20357+2797691+1457691+14518908(Top 67%)6930(Top 57%)6930(Top 382%)
30K18.64 mi3.11 mi20004+3537528+1637528+16318610(Top 66%)6898(Top 56%)6898(Top 380%)
20M20.00 mi1.36 mi19831+1737451+777451+7717853(Top 63%)6627(Top 54%)6627(Top 366%)
21M21.00 mi1.00 mi19707+1247408+437408+4317924(Top 63%)6754(Top 55%)6754(Top 373%)
35K21.75 mi0.75 mi19800-937476-687476-6821727(Top 76%)8885(Top 73%)8885(Top 490%)
23M23.00 mi1.25 mi19619+1817407+697407+6916654(Top 59%)6255(Top 51%)6255(Top 345%)
24M24.00 mi1.00 mi19519+1007373+347373+3417053(Top 60%)6535(Top 53%)6535(Top 360%)
40K24.85 mi0.85 mi19459+607356+177356+1718289(Top 64%)7267(Top 59%)7267(Top 401%)
25.2M25.20 mi0.35 mi19415+447339+177339+1717325(Top 61%)6775(Top 55%)6775(Top 374%)
Finish26.22 mi1.02 mi19342+737322+177322+1717895(Top 63%)7030(Top 57%)7030(Top 388%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

22253

Females

8693

F45-49

8693

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

20045

Females

7490

F45-49

7490

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

22253

Females

8693

F45-49

8693

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

20686

Females

7882

F45-49

7882

20K→Half

12.4 - 13.1 mi

Top 78%
×2story building
+19ft-37ft

Overall

22259

Females

8741

F45-49

8741

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

18908

Females

6930

F45-49

6930

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

18610

Females

6898

F45-49

6898

30K→20M

18.6 - 20.0 mi

Top 63%
×5story building
+64ft-50ft

Overall

17853

Females

6627

F45-49

6627

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

17924

Females

6754

F45-49

6754

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

21727

Females

8885

F45-49

8885

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

16654

Females

6255

F45-49

6255

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

17053

Females

6535

F45-49

6535

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18289

Females

7267

F45-49

7267

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17325

Females

6775

F45-49

6775

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

17895

Females

7030

F45-49

7030

Passing Analysis

Category:
Athletes Passed
1989
Passed By
2287
Net Change
-298
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19044
5K → 10K98579-481#19044#19525
10K → 15K43990-947#19525#20472
15K → 20K161226-65#20472#20537
20K → Half14113-99#20537#20636
Half → 25K30526+279#20636#20357
25K → 30K42168+353#20357#20004
30K → 20M20229+173#20004#19831
20M → 21M16238+124#19831#19707
21M → 35K22115-93#19707#19800
35K → 23M20019+181#19800#19619
23M → 24M11515+100#19619#19519
24M → 40K9131+60#19519#19459
40K → 25.2M5410+44#19459#19415
25.2M → Finish10128+73#19415#19342
TOTALS19892287-298
📊

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