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BOSTON MARATHON 2025

Liangbo Yu

Bib: 21945•F

MI

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:19
Rank: #19733
Start → 5K
26:19 | 8:28/mi
10K· 6.21 mi
53:06
Rank: #20117 (-384)
5K → 10K
26:47 | 8:37/mi
15K· 9.32 mi
1:19:35
Rank: #19910 (+207)
10K → 15K
26:29 | 8:31/mi
20K· 12.43 mi
1:46:27
Rank: #19689 (+221)
15K → 20K
26:52 | 8:39/mi
Half· 13.11 mi
1:52:20
Rank: #19704 (-15)
20K → Half
5:53 | 8:37/mi
25K· 15.53 mi
2:13:55
Rank: #19626 (+78)
Half → 25K
21:35 | 8:54/mi
30K· 18.64 mi
2:42:13
Rank: #19334 (+292)
25K → 30K
28:18 | 9:07/mi
20M
2:54:47
Rank: #19230 (+104)
30K → 20M
12:34 | 9:15/mi
21M
3:04:42
Rank: #19153 (+77)
20M → 21M
9:55 | 9:55/mi
35K· 21.75 mi
3:11:17
Rank: #19092 (+61)
21M → 35K
6:35 | 8:48/mi
23M
3:23:21
Rank: #19111 (-19)
35K → 23M
12:04 | 9:38/mi
24M
3:32:14
Rank: #19008 (+103)
23M → 24M
8:53 | 8:53/mi
40K· 24.85 mi
3:40:00
Rank: #18897 (+111)
24M → 40K
7:46 | 9:05/mi
25.2M
3:43:33
Rank: #18897
40K → 25.2M
3:33 | 10:18/mi
Finish· 26.22 mi
3:52:37
Rank: #18870 (+27)
25.2M → Finish
9:04 | 8:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:20
Pace8:34 /mi
2nd Half
Distance13.11 mi
Time2:00:17
Pace9:11 /mi
📊Positive Split: 7.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:0926:198:2826:19
8:28
-
10K
6.21 mi11:47:5653:068:3326:47
8:37
+0:09
15K
9.32 mi12:14:251:19:358:3226:29
8:31
-0:06
20K
12.43 mi12:41:171:46:278:3426:52
8:39
+0:08
Half
13.11 mi12:47:101:52:208:345:53
8:37
-0:02
25K
15.53 mi13:08:452:13:558:3721:35
8:54
+0:17
30K
18.64 mi13:37:032:42:138:4228:18
9:07
+0:13
20M
20.00 mi13:49:372:54:478:4412:34
9:15
+0:08
21M
21.00 mi13:59:323:04:428:489:55
9:55
+0:40
35K
21.75 mi14:06:073:11:178:486:35
8:48
-1:07
23M
23.00 mi14:18:113:23:218:5012:04
9:38
+0:50
24M
24.00 mi14:27:043:32:148:518:53
8:53
-0:45
40K
24.85 mi14:34:503:40:008:517:46
9:05
+0:12
25.2M
25.20 mi14:38:233:43:338:523:33
10:18
+1:13
Finish
26.22 mi14:47:273:52:378:539:04
8:54
-1:24

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

8:28 /mi

Average Pace

8:53 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:25:28

37% of race

Time at Steady Pace

1:49:03

47% of race

Time at Slower Pace

38:06

16% of race

Average Pace: 8:52 /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 mi11:21:0926:198:2826:19
8:28
#19733
10K
6.21 mi11:47:5653:068:3326:47
8:37
#20117
15K
9.32 mi12:14:251:19:358:3226:29
8:31
#19910
20K
12.43 mi12:41:171:46:278:3426:52
8:39
#19689
Half
13.11 mi12:47:101:52:208:345:53
8:37
#19704
25K
15.53 mi13:08:452:13:558:3721:35
8:54
#19626
30K
18.64 mi13:37:032:42:138:4228:18
9:07
#19334
20M
20.00 mi13:49:372:54:478:4412:34
9:15
#19230
21M
21.00 mi13:59:323:04:428:489:55
9:55
#19153
35K
21.75 mi14:06:073:11:178:486:35
8:48
#19092
23M
23.00 mi14:18:113:23:218:5012:04
9:38
#19111
24M
24.00 mi14:27:043:32:148:518:53
8:53
#19008
40K
24.85 mi14:34:503:40:008:517:46
9:05
#18897
25.2M
25.20 mi14:38:233:43:338:523:33
10:18
#18897
Finish
26.22 mi14:47:273:52:378:539:04
8:54
#18870
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi197337351735119482(Top 69%)7161(Top 59%)7161(Top 395%)
10K6.21 mi3.10 mi20117-3847542-1917542-19120459(Top 72%)7720(Top 63%)7720(Top 426%)
15K9.32 mi3.11 mi19910+2077414+1287414+12819482(Top 69%)7161(Top 59%)7161(Top 395%)
20K12.43 mi3.11 mi19689+2217296+1187296+11819146(Top 67%)6994(Top 57%)6994(Top 386%)
Half13.11 mi0.68 mi19704-157308-127308-1219955(Top 70%)7443(Top 61%)7443(Top 411%)
25K15.53 mi2.42 mi19626+787274+347274+3419448(Top 68%)7225(Top 59%)7225(Top 399%)
30K18.64 mi3.11 mi19334+2927151+1237151+12318233(Top 64%)6707(Top 55%)6707(Top 370%)
20M20.00 mi1.36 mi19230+1047114+377114+3718049(Top 64%)6744(Top 55%)6744(Top 372%)
21M21.00 mi1.00 mi19153+777087+277087+2718000(Top 63%)6794(Top 56%)6794(Top 375%)
35K21.75 mi0.75 mi19092+617069+187069+1817289(Top 61%)6524(Top 53%)6524(Top 360%)
23M23.00 mi1.25 mi19111-197109-407109-4019234(Top 68%)7634(Top 62%)7634(Top 421%)
24M24.00 mi1.00 mi19008+1037072+377072+3716798(Top 59%)6388(Top 52%)6388(Top 352%)
40K24.85 mi0.85 mi18897+1117042+307042+3016807(Top 59%)6487(Top 53%)6487(Top 358%)
25.2M25.20 mi0.35 mi188977046-47046-418307(Top 64%)7295(Top 60%)7295(Top 402%)
Finish26.22 mi1.02 mi18870+277057-117057-1118537(Top 65%)7351(Top 60%)7351(Top 405%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

19482

Females

7161

F45-49

7161

5K→10K

3.1 - 6.2 mi

Top 72%
×5stories
+79ft-138ft

Overall

20459

Females

7720

F45-49

7720

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

19482

Females

7161

F45-49

7161

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

19146

Females

6994

F45-49

6994

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

19955

Females

7443

F45-49

7443

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

19448

Females

7225

F45-49

7225

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

18233

Females

6707

F45-49

6707

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

18049

Females

6744

F45-49

6744

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

18000

Females

6794

F45-49

6794

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

17289

Females

6524

F45-49

6524

35K→23M

21.8 - 23.0 mi

Top 68%
×5stories
+23ft-63ft

Overall

19234

Females

7634

F45-49

7634

23M→24M

23.0 - 24.0 mi

Top 59%
×6stories
+12ft-82ft

Overall

16798

Females

6388

F45-49

6388

24M→40K

24.0 - 24.9 mi

Top 59%
×1story
+6ft-20ft

Overall

16807

Females

6487

F45-49

6487

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18307

Females

7295

F45-49

7295

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

18537

Females

7351

F45-49

7351

Passing Analysis

Category:
Athletes Passed
2140
Passed By
1277
Net Change
+863
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19733
5K → 10K125509-384#19733#20117
10K → 15K29891+207#20117#19910
15K → 20K30988+221#19910#19689
20K → Half2944-15#19689#19704
Half → 25K193115+78#19704#19626
25K → 30K37078+292#19626#19334
30K → 20M15652+104#19334#19230
20M → 21M13457+77#19230#19153
21M → 35K8726+61#19153#19092
35K → 23M83102-19#19092#19111
23M → 24M12623+103#19111#19008
24M → 40K12615+111#19008#18897
40K → 25.2M28280#18897#18897
25.2M → Finish7649+27#18897#18870
TOTALS21401277+863
📊

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