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BOSTON MARATHON 2025

Shihong Ni

Bib: 21814•F

WA

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
8:36/mi
26:42
↑ 97↓ 3451.5%
10K· 6.21 mi
8:34/mi
53:19
↑ 79↓ 1380.4%
15K· 9.32 mi
8:41/mi
1:20:19
↑ 67↓ 78
20K· 12.43 mi
8:44/mi
1:47:26
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:53:15
↑ 19↓ 370.5%
25K· 15.53 mi
8:42/mi
2:14:21
↑ 66↓ 880.2%
30K· 18.64 mi
9:15/mi
2:43:04
↑ 181↓ 1480.2%
20M
10:06/mi
2:56:48
↑ 64↓ 500.2%
21M
9:38/mi
3:06:26
↑ 106↓ 241.6%
35K· 21.75 mi
8:47/mi
3:13:00
↑ 17↓ 861.7%
23M
8:58/mi
3:24:14
↑ 23↓ 630.6%
24M
8:49/mi
3:33:03
↓ 821.3%
40K· 24.85 mi
9:02/mi
3:40:46
↓ 200.3%
25.2M
10:29/mi
3:44:23
↑ 13↓ 160.2%
Finish· 26.22 mi
8:57/mi
3:53:30
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:15
Pace8:38 /mi
2nd Half
Distance13.11 mi
Time2:00:15
Pace9:10 /mi
📊Positive Split: 6.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:0426:428:3626:42
8:36
-
10K
6.21 mi11:51:4153:198:3526:37
8:34
-0:02
15K
9.32 mi12:18:411:20:198:3727:00
8:41
+0:07
20K
12.43 mi12:45:481:47:268:3927:07
8:44
+0:03
Half
13.11 mi12:51:371:53:158:385:49
8:32
-0:12
25K
15.53 mi13:12:432:14:218:3921:06
8:42
+0:10
30K
18.64 mi13:41:262:43:048:4528:43
9:15
+0:33
20M
20.00 mi13:55:102:56:488:5013:44
10:06
+0:51
21M
21.00 mi14:04:483:06:268:539:38
9:38
-0:28
35K
21.75 mi14:11:223:13:008:526:34
8:47
-0:51
23M
23.00 mi14:22:363:24:148:5311:14
8:58
+0:11
24M
24.00 mi14:31:253:33:038:538:49
8:49
-0:09
40K
24.85 mi14:39:083:40:468:537:43
9:02
+0:13
25.2M
25.20 mi14:42:453:44:238:543:37
10:29
+1:27
Finish
26.22 mi14:51:523:53:308:559:07
8:57
-1:32

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

8:32 /mi

Average Pace

8:55 /mi

Slowest Pace

10:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

5:49

2% of race

Time at Steady Pace

2:51:59

74% of race

Time at Slower Pace

55:42

24% of race

Average Pace: 8:54 /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 mi11:25:0426:428:3626:42
8:36
#20426
10K
6.21 mi11:51:4153:198:3526:37
8:34
#20303
15K
9.32 mi12:18:411:20:198:3727:00
8:41
#20299
20K
12.43 mi12:45:481:47:268:3927:07
8:44
#20110
Half
13.11 mi12:51:371:53:158:385:49
8:32
#20058
25K
15.53 mi13:12:432:14:218:3921:06
8:42
#19770
30K
18.64 mi13:41:262:43:048:4528:43
9:15
#19581
20M
20.00 mi13:55:102:56:488:5013:44
10:06
#19774
21M
21.00 mi14:04:483:06:268:539:38
9:38
#19590
35K
21.75 mi14:11:223:13:008:526:34
8:47
#19494
23M
23.00 mi14:22:363:24:148:5311:14
8:58
#19306
24M
24.00 mi14:31:253:33:038:538:49
8:49
#19178
40K
24.85 mi14:39:083:40:468:537:43
9:02
#19063
25.2M
25.20 mi14:42:453:44:238:543:37
10:29
#19058
Finish
26.22 mi14:51:523:53:308:559:07
8:57
#19039
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi204267758775820443(Top 72%)7676(Top 63%)7676(Top 423%)
10K6.21 mi3.10 mi20303+1237650+1087650+10820184(Top 71%)7567(Top 62%)7567(Top 417%)
15K9.32 mi3.11 mi20299+47642+87642+820443(Top 72%)7676(Top 63%)7676(Top 423%)
20K12.43 mi3.11 mi20110+1897528+1147528+11419564(Top 69%)7242(Top 59%)7242(Top 399%)
Half13.11 mi0.68 mi20058+527510+187510+1819421(Top 68%)7142(Top 58%)7142(Top 394%)
25K15.53 mi2.42 mi19770+2887352+1587352+15818420(Top 65%)6668(Top 55%)6668(Top 368%)
30K18.64 mi3.11 mi19581+1897285+677285+6718867(Top 66%)7047(Top 58%)7047(Top 389%)
20M20.00 mi1.36 mi19774-1937419-1347419-13421301(Top 75%)8515(Top 70%)8515(Top 470%)
21M21.00 mi1.00 mi19590+1847343+767343+7616735(Top 59%)6117(Top 50%)6117(Top 337%)
35K21.75 mi0.75 mi19494+967300+437300+4317175(Top 60%)6454(Top 53%)6454(Top 356%)
23M23.00 mi1.25 mi19306+1887224+767224+7616133(Top 57%)5967(Top 49%)5967(Top 329%)
24M24.00 mi1.00 mi19178+1287172+527172+5216450(Top 58%)6186(Top 51%)6186(Top 341%)
40K24.85 mi0.85 mi19063+1157130+427130+4216493(Top 58%)6316(Top 52%)6316(Top 348%)
25.2M25.20 mi0.35 mi19058+57142-127142-1218986(Top 67%)7625(Top 62%)7625(Top 421%)
Finish26.22 mi1.02 mi19039+197152-107152-1018785(Top 66%)7481(Top 61%)7481(Top 413%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

20443

Females

7676

F45-49

7676

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

20184

Females

7567

F45-49

7567

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

20443

Females

7676

F45-49

7676

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

19564

Females

7242

F45-49

7242

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

19421

Females

7142

F45-49

7142

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

18420

Females

6668

F45-49

6668

25K→30K

15.5 - 18.6 mi

Top 66%
×9story building
+181ft-148ft

Overall

18867

Females

7047

F45-49

7047

30K→20M

18.6 - 20.0 mi

Top 75%
×5story building
+64ft-50ft

Overall

21301

Females

8515

F45-49

8515

20M→21M

20.0 - 21.0 mi

Top 59%
×8story building
+106ft-24ft

Overall

16735

Females

6117

F45-49

6117

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

17175

Females

6454

F45-49

6454

35K→23M

21.8 - 23.0 mi

Top 57%
×5story building
+23ft-63ft

Overall

16133

Females

5967

F45-49

5967

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

16450

Females

6186

F45-49

6186

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16493

Females

6316

F45-49

6316

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

18986

Females

7625

F45-49

7625

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

18785

Females

7481

F45-49

7481

Passing Analysis

Category:
Athletes Passed
2434
Passed By
1047
Net Change
+1387
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20426
5K → 10K353230+123#20426#20303
10K → 15K195191+4#20303#20299
15K → 20K26980+189#20299#20110
20K → Half6210+52#20110#20058
Half → 25K31325+288#20058#19770
25K → 30K308119+189#19770#19581
30K → 20M58251-193#19581#19774
20M → 21M20723+184#19774#19590
21M → 35K1059+96#19590#19494
35K → 23M20012+188#19494#19306
23M → 24M1368+128#19306#19178
24M → 40K13318+115#19178#19063
40K → 25.2M3934+5#19063#19058
25.2M → Finish5637+19#19058#19039
TOTALS24341047+1387
📊

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