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BOSTON MARATHON 2025

Jiali Yu

Bib: 18804•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:58
Rank: #19067
Start → 5K
8:21/mi
25:58 split
10K· 6.21 mi
52:15
Rank: #19295 (-228)
5K → 10K
8:28/mi
26:17 split
15K· 9.32 mi
1:18:45
Rank: #19354 (-59)
10K → 15K
8:32/mi
26:30 split
20K· 12.43 mi
1:45:41
Rank: #19296 (+58)
15K → 20K
8:40/mi
26:56 split
Half· 13.11 mi
1:51:29
Rank: #19289 (+7)
20K → Half
8:30/mi
5:48 split
25K· 15.53 mi
2:15:03
Rank: #20033 (-744)
Half → 25K
9:43/mi
23:34 split
30K· 18.64 mi
2:47:22
Rank: #20769 (-736)
25K → 30K
10:24/mi
32:19 split
20M
3:01:23
Rank: #20889 (-120)
30K → 20M
10:19/mi
14:01 split
21M
3:12:45
Rank: #21016 (-127)
20M → 21M
11:22/mi
11:22 split
35K· 21.75 mi
3:20:06
Rank: #21031 (-15)
21M → 35K
9:49/mi
7:21 split
23M
3:32:36
Rank: #21003 (+28)
35K → 23M
9:59/mi
12:30 split
24M
3:42:48
Rank: #21048 (-45)
23M → 24M
10:12/mi
10:12 split
40K· 24.85 mi
3:51:44
Rank: #21102 (-54)
24M → 40K
10:27/mi
8:56 split
25.2M
3:55:39
Rank: #21096 (+6)
40K → 25.2M
11:21/mi
3:55 split
Finish· 26.22 mi
4:05:03
Rank: #21058 (+38)
25.2M → Finish
9:13/mi
9:24 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:29
Pace8:30 /mi
2nd Half
Distance13.11 mi
Time2:13:34
Pace10:11 /mi
📊Positive Split: 19.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:4725:588:2125:58
8:21
-
10K
6.21 mi11:45:0452:158:2526:17
8:28
+0:07
15K
9.32 mi12:11:341:18:458:2726:30
8:32
+0:04
20K
12.43 mi12:38:301:45:418:3026:56
8:40
+0:08
Half
13.11 mi12:44:181:51:298:305:48
8:30
-0:10
25K
15.53 mi13:07:522:15:038:4223:34
9:43
+1:13
30K
18.64 mi13:40:112:47:228:5932:19
10:24
+0:41
20M
20.00 mi13:54:123:01:239:0414:01
10:19
-0:05
21M
21.00 mi14:05:343:12:459:1111:22
11:22
+1:03
35K
21.75 mi14:12:553:20:069:127:21
9:49
-1:33
23M
23.00 mi14:25:253:32:369:1512:30
9:59
+0:10
24M
24.00 mi14:35:373:42:489:1710:12
10:12
+0:13
40K
24.85 mi14:44:333:51:449:198:56
10:27
+0:15
25.2M
25.20 mi14:48:283:55:399:213:55
11:21
+0:54
Finish
26.22 mi14:57:524:05:039:219:24
9:13
-2:08

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

9:21 /mi

Slowest Pace

11:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:53

49% of race

Time at Steady Pace

53:37

22% of race

Time at Slower Pace

1:10:33

29% 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 mi11:18:4725:588:2125:58
8:21
#19067
10K
6.21 mi11:45:0452:158:2526:17
8:28
#19295
15K
9.32 mi12:11:341:18:458:2726:30
8:32
#19354
20K
12.43 mi12:38:301:45:418:3026:56
8:40
#19296
Half
13.11 mi12:44:181:51:298:305:48
8:30
#19289
25K
15.53 mi13:07:522:15:038:4223:34
9:43
#20033
30K
18.64 mi13:40:112:47:228:5932:19
10:24
#20769
20M
20.00 mi13:54:123:01:239:0414:01
10:19
#20889
21M
21.00 mi14:05:343:12:459:1111:22
11:22
#21016
35K
21.75 mi14:12:553:20:069:127:21
9:49
#21031
23M
23.00 mi14:25:253:32:369:1512:30
9:59
#21003
24M
24.00 mi14:35:373:42:489:1710:12
10:12
#21048
40K
24.85 mi14:44:333:51:449:198:56
10:27
#21102
25.2M
25.20 mi14:48:283:55:399:213:55
11:21
#21096
Finish
26.22 mi14:57:524:05:039:219:24
9:13
#21058
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi190676949694919520(Top 69%)7186(Top 59%)7186(Top 131%)
10K6.21 mi3.10 mi19295-2287064-1157064-11519585(Top 69%)7227(Top 59%)7227(Top 132%)
15K9.32 mi3.11 mi19354-597096-327096-3219520(Top 69%)7186(Top 59%)7186(Top 131%)
20K12.43 mi3.11 mi19296+587078+187078+1819271(Top 68%)7067(Top 58%)7067(Top 129%)
Half13.11 mi0.68 mi19289+77076+27076+219294(Top 68%)7085(Top 58%)7085(Top 130%)
25K15.53 mi2.42 mi20033-7447503-4277503-42722554(Top 79%)8957(Top 73%)8957(Top 164%)
30K18.64 mi3.11 mi20769-7367968-4657968-46522718(Top 80%)9163(Top 75%)9163(Top 168%)
20M20.00 mi1.36 mi20889-1208036-688036-6821912(Top 77%)8838(Top 72%)8838(Top 162%)
21M21.00 mi1.00 mi21016-1278130-948130-9422312(Top 79%)9141(Top 75%)9141(Top 167%)
35K21.75 mi0.75 mi21031-158151-218151-2121406(Top 75%)8721(Top 71%)8721(Top 159%)
23M23.00 mi1.25 mi21003+288164-138164-1320447(Top 72%)8268(Top 68%)8268(Top 151%)
24M24.00 mi1.00 mi21048-458218-548218-5421946(Top 77%)9102(Top 74%)9102(Top 166%)
40K24.85 mi0.85 mi21102-548257-398257-3921782(Top 77%)9079(Top 74%)9079(Top 166%)
25.2M25.20 mi0.35 mi21096+68261-48261-421695(Top 76%)9001(Top 74%)9001(Top 165%)
Finish26.22 mi1.02 mi21058+388258+38258+320081(Top 71%)8196(Top 67%)8196(Top 150%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

19520

Females

7186

F18-39

7186

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

19585

Females

7227

F18-39

7227

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

19520

Females

7186

F18-39

7186

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

19271

Females

7067

F18-39

7067

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

19294

Females

7085

F18-39

7085

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

22554

Females

8957

F18-39

8957

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

22718

Females

9163

F18-39

9163

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

21912

Females

8838

F18-39

8838

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

22312

Females

9141

F18-39

9141

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21406

Females

8721

F18-39

8721

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

20447

Females

8268

F18-39

8268

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

21946

Females

9102

F18-39

9102

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21782

Females

9079

F18-39

9079

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

21695

Females

9001

F18-39

9001

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

20081

Females

8196

F18-39

8196

Passing Analysis

Category:
Athletes Passed
1124
Passed By
3115
Net Change
-1991
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19067
5K → 10K163391-228#19067#19295
10K → 15K168227-59#19295#19354
15K → 20K221163+58#19354#19296
20K → Half3730+7#19296#19289
Half → 25K39783-744#19289#20033
25K → 30K73809-736#20033#20769
30K → 20M62182-120#20769#20889
20M → 21M51178-127#20889#21016
21M → 35K6176-15#21016#21031
35K → 23M8961+28#21031#21003
23M → 24M4691-45#21003#21048
24M → 40K2781-54#21048#21102
40K → 25.2M2317+6#21102#21096
25.2M → Finish6426+38#21096#21058
TOTALS11243115-1991
📊

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