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BOSTON MARATHON 2025

Miaomiao Yi

Bib: 19847•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 43%
Division (F40-44)
#0 / 1718
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
8:14/mi
25:35
↑ 97↓ 3451.5%
10K· 6.21 mi
7:59/mi
50:23
↑ 79↓ 1380.4%
15K· 9.32 mi
8:06/mi
1:15:32
↑ 67↓ 78
20K· 12.43 mi
8:15/mi
1:41:09
↑ 106↓ 860.1%
Half· 13.11 mi
8:05/mi
1:46:40
↑ 19↓ 370.5%
25K· 15.53 mi
8:53/mi
2:08:13
↑ 66↓ 880.2%
30K· 18.64 mi
10:02/mi
2:39:22
↑ 181↓ 1480.2%
20M
10:53/mi
2:54:10
↑ 64↓ 500.2%
21M
11:01/mi
3:05:11
↑ 106↓ 241.6%
35K· 21.75 mi
8:44/mi
3:11:43
↑ 17↓ 861.7%
23M
9:32/mi
3:23:39
↑ 23↓ 630.6%
24M
7:22/mi
3:31:01
↓ 821.3%
40K· 24.85 mi
7:27/mi
3:37:23
↓ 200.3%
25.2M
8:36/mi
3:40:21
↑ 13↓ 160.2%
Finish· 26.22 mi
7:24/mi
3:47:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:40
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time2:01:13
Pace9:15 /mi
📊Positive Split: 13.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:4625:358:1425:35
8:14
-
10K
6.21 mi11:46:3450:238:0724:48
7:59
-0:15
15K
9.32 mi12:11:431:15:328:0625:09
8:06
+0:07
20K
12.43 mi12:37:201:41:098:0825:37
8:15
+0:09
Half
13.11 mi12:42:511:46:408:085:31
8:05
-0:10
25K
15.53 mi13:04:242:08:138:1521:33
8:53
+0:48
30K
18.64 mi13:35:332:39:228:3331:09
10:02
+1:09
20M
20.00 mi13:50:212:54:108:4214:48
10:53
+0:51
21M
21.00 mi14:01:223:05:118:4911:01
11:01
+0:08
35K
21.75 mi14:07:543:11:438:496:32
8:44
-2:17
23M
23.00 mi14:19:503:23:398:5111:56
9:32
+0:48
24M
24.00 mi14:27:123:31:018:487:22
7:22
-2:10
40K
24.85 mi14:33:343:37:238:456:22
7:27
+0:05
25.2M
25.20 mi14:36:323:40:218:452:58
8:36
+1:09
Finish
26.22 mi14:44:043:47:538:427:32
7:24
-1:12

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

7:22 /mi

Average Pace

8:42 /mi

Slowest Pace

11:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

21:16

9% of race

Time at Steady Pace

1:56:10

51% of race

Time at Slower Pace

1:30:27

40% of race

Average Pace: 8:41 /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 mi11:21:4625:358:1425:35
8:14
#18335
10K
6.21 mi11:46:3450:238:0724:48
7:59
#17324
15K
9.32 mi12:11:431:15:328:0625:09
8:06
#17119
20K
12.43 mi12:37:201:41:098:0825:37
8:15
#16968
Half
13.11 mi12:42:511:46:408:085:31
8:05
#16937
25K
15.53 mi13:04:242:08:138:1521:33
8:53
#17301
30K
18.64 mi13:35:332:39:228:3331:09
10:02
#18447
20M
20.00 mi13:50:212:54:108:4214:48
10:53
#19065
21M
21.00 mi14:01:223:05:118:4911:01
11:01
#19278
35K
21.75 mi14:07:543:11:438:496:32
8:44
#19189
23M
23.00 mi14:19:503:23:398:5111:56
9:32
#19169
24M
24.00 mi14:27:123:31:018:487:22
7:22
#18724
40K
24.85 mi14:33:343:37:238:456:22
7:27
#18295
25.2M
25.20 mi14:36:323:40:218:452:58
8:36
#18163
Finish
26.22 mi14:44:043:47:538:427:32
7:24
#17808
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi183356545654516718(Top 59%)5571(Top 46%)5571(Top 324%)
10K6.21 mi3.10 mi17324+10115923+6225923+62216360(Top 58%)5345(Top 44%)5345(Top 311%)
15K9.32 mi3.11 mi17119+2055783+1405783+14016718(Top 59%)5571(Top 46%)5571(Top 324%)
20K12.43 mi3.11 mi16968+1515720+635720+6316613(Top 58%)5558(Top 45%)5558(Top 324%)
Half13.11 mi0.68 mi16937+315704+165704+1616595(Top 58%)5541(Top 45%)5541(Top 323%)
25K15.53 mi2.42 mi17301-3645942-2385942-23819375(Top 68%)7188(Top 59%)7188(Top 418%)
30K18.64 mi3.11 mi18447-11466633-6916633-69121674(Top 76%)8600(Top 70%)8600(Top 501%)
20M20.00 mi1.36 mi19065-6187018-3857018-38523369(Top 82%)9604(Top 79%)9604(Top 559%)
21M21.00 mi1.00 mi19278-2137160-1427160-14221452(Top 76%)8679(Top 71%)8679(Top 505%)
35K21.75 mi0.75 mi19189+897124+367124+3616927(Top 60%)6297(Top 51%)6297(Top 367%)
23M23.00 mi1.25 mi19169+207139-157139-1518844(Top 66%)7423(Top 61%)7423(Top 432%)
24M24.00 mi1.00 mi18724+4456918+2216918+2216884(Top 24%)1428(Top 12%)1428(Top 83%)
40K24.85 mi0.85 mi18295+4296710+2086710+2086545(Top 23%)1373(Top 11%)1373(Top 80%)
25.2M25.20 mi0.35 mi18163+1326649+616649+619569(Top 34%)2846(Top 23%)2846(Top 166%)
Finish26.22 mi1.02 mi17808+3556471+1786471+1788487(Top 30%)2298(Top 19%)2298(Top 134%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

16718

Females

5571

F40-44

5571

5K→10K

3.1 - 6.2 mi

Top 58%
×5story building
+79ft-138ft

Overall

16360

Females

5345

F40-44

5345

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

16718

Females

5571

F40-44

5571

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

16613

Females

5558

F40-44

5558

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

16595

Females

5541

F40-44

5541

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

19375

Females

7188

F40-44

7188

25K→30K

15.5 - 18.6 mi

Top 76%
×9story building
+181ft-148ft

Overall

21674

Females

8600

F40-44

8600

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

23369

Females

9604

F40-44

9604

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

21452

Females

8679

F40-44

8679

21M→35K

21.0 - 21.8 mi

Top 60%
×7story building
+17ft-86ft

Overall

16927

Females

6297

F40-44

6297

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

18844

Females

7423

F40-44

7423

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6884

Females

1428

F40-44

1428

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6545

Females

1373

F40-44

1373

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9569

Females

2846

F40-44

2846

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

8487

Females

2298

F40-44

2298

Passing Analysis

Category:
Athletes Passed
3429
Passed By
2902
Net Change
+527
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18335
5K → 10K104635+1011#18335#17324
10K → 15K323118+205#17324#17119
15K → 20K265114+151#17119#16968
20K → Half4918+31#16968#16937
Half → 25K81445-364#16937#17301
25K → 30K451191-1146#17301#18447
30K → 20M18636-618#18447#19065
20M → 21M41254-213#19065#19278
21M → 35K10011+89#19278#19189
35K → 23M9777+20#19189#19169
23M → 24M4461+445#19169#18724
24M → 40K4290+429#18724#18295
40K → 25.2M1342+132#18295#18163
25.2M → Finish3550+355#18163#17808
TOTALS34292902+527
📊

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