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BOSTON MARATHON 2024

Junko Yamazaki

Bib: 26853•F

NH

0:00
0:00
/ mi
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Division (F18-39)
#0 / 4660
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
38:36
Rank: #25499
Start → 5K
38:36 | 12:25/mi
10K· 6.21 mi
1:21:14
Rank: #25527 (-28)
5K → 10K
42:38 | 13:43/mi
15K· 9.32 mi
2:02:55
Rank: #25521 (+6)
10K → 15K
41:41 | 13:25/mi
20K· 12.43 mi
2:44:12
Rank: #25478 (+43)
15K → 20K
41:17 | 13:17/mi
Half· 13.11 mi
2:52:45
Rank: #25473 (+5)
20K → Half
8:33 | 12:32/mi
25K· 15.53 mi
3:27:43
Rank: #25462 (+11)
Half → 25K
34:58 | 14:25/mi
30K· 18.64 mi
4:14:47
Rank: #25454 (+8)
25K → 30K
47:04 | 15:09/mi
20M
4:32:59
Rank: #25418 (+36)
30K → 20M
18:12 | 13:24/mi
21M
4:47:27
Rank: #25388 (+30)
20M → 21M
14:28 | 14:28/mi
35K· 21.75 mi
5:00:02
Rank: #25420 (-32)
21M → 35K
12:35 | 16:49/mi
23M
5:16:19
Rank: #25374 (+46)
35K → 23M
16:17 | 13:00/mi
24M
5:29:25
Rank: #25346 (+28)
23M → 24M
13:06 | 13:06/mi
40K· 24.85 mi
5:41:07
Rank: #25329 (+17)
24M → 40K
11:42 | 13:41/mi
25.2M
5:46:37
Rank: #25326 (+3)
40K → 25.2M
5:30 | 15:57/mi
Finish· 26.22 mi
5:59:08
Rank: #25315 (+11)
25.2M → Finish
12:31 | 12:17/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:52:45
Pace13:11 /mi
2nd Half
Distance13.11 mi
Time3:06:23
Pace14:13 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi12:05:0838:3612:2538:36
12:25
-
10K
6.21 mi12:47:461:21:1413:0442:38
13:43
+1:18
15K
9.32 mi13:29:272:02:5513:1141:41
13:25
-0:18
20K
12.43 mi14:10:442:44:1213:1341:17
13:17
-0:08
Half
13.11 mi14:19:172:52:4513:118:33
12:32
-0:45
25K
15.53 mi14:54:153:27:4313:2234:58
14:25
+1:53
30K
18.64 mi15:41:194:14:4713:4047:04
15:09
+0:44
20M
20.00 mi15:59:314:32:5913:3918:12
13:24
-1:45
21M
21.00 mi16:13:594:47:2713:4114:28
14:28
+1:04
35K
21.75 mi16:26:345:00:0213:4812:35
16:49
+2:21
23M
23.00 mi16:42:515:16:1913:4516:17
13:00
-3:49
24M
24.00 mi16:55:575:29:2513:4413:06
13:06
+0:06
40K
24.85 mi17:07:395:41:0713:4311:42
13:41
+0:35
25.2M
25.20 mi17:13:095:46:3713:455:30
15:57
+2:16
Finish
26.22 mi17:25:405:59:0813:4212:31
12:17
-3:40

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

12:17 /mi

Average Pace

13:42 /mi

Slowest Pace

16:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

59:40

17% of race

Time at Steady Pace

3:04:53

51% of race

Time at Slower Pace

1:54:35

32% of race

Average Pace: 13:42 /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 mi12:05:0838:3612:2538:36
12:25
#25499
10K
6.21 mi12:47:461:21:1413:0442:38
13:43
#25527
15K
9.32 mi13:29:272:02:5513:1141:41
13:25
#25521
20K
12.43 mi14:10:442:44:1213:1341:17
13:17
#25478
Half
13.11 mi14:19:172:52:4513:118:33
12:32
#25473
25K
15.53 mi14:54:153:27:4313:2234:58
14:25
#25462
30K
18.64 mi15:41:194:14:4713:4047:04
15:09
#25454
20M
20.00 mi15:59:314:32:5913:3918:12
13:24
#25418
21M
21.00 mi16:13:594:47:2713:4114:28
14:28
#25388
35K
21.75 mi16:26:345:00:0213:4812:35
16:49
#25420
23M
23.00 mi16:42:515:16:1913:4516:17
13:00
#25374
24M
24.00 mi16:55:575:29:2513:4413:06
13:06
#25346
40K
24.85 mi17:07:395:41:0713:4311:42
13:41
#25329
25.2M
25.20 mi17:13:095:46:3713:455:30
15:57
#25326
Finish
26.22 mi17:25:405:59:0813:4212:31
12:17
#25315
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25499108971089725409(Top 99%)10839(Top 99%)10839(Top 233%)
10K6.21 mi3.10 mi25527-2810916-1910916-1925533(Top 100%)10919(Top 100%)10919(Top 234%)
15K9.32 mi3.11 mi25521+610913+310913+325409(Top 99%)10839(Top 99%)10839(Top 233%)
20K12.43 mi3.11 mi25478+4310887+2610887+2625056(Top 98%)10626(Top 97%)10626(Top 228%)
Half13.11 mi0.68 mi25473+510886+110886+124938(Top 98%)10591(Top 97%)10591(Top 227%)
25K15.53 mi2.42 mi25462+1110881+510881+525134(Top 98%)10706(Top 98%)10706(Top 230%)
30K18.64 mi3.11 mi25454+810875+610875+625036(Top 98%)10708(Top 98%)10708(Top 230%)
20M20.00 mi1.36 mi25418+3610849+2610849+2623362(Top 91%)9941(Top 91%)9941(Top 213%)
21M21.00 mi1.00 mi25388+3010835+1410835+1422953(Top 90%)9775(Top 89%)9775(Top 210%)
35K21.75 mi0.75 mi25420-3210853-1810853-1825314(Top 99%)10846(Top 99%)10846(Top 233%)
23M23.00 mi1.25 mi25374+4610827+2610827+2622557(Top 88%)9639(Top 88%)9639(Top 207%)
24M24.00 mi1.00 mi25346+2810814+1310814+1323232(Top 91%)10024(Top 92%)10024(Top 215%)
40K24.85 mi0.85 mi25329+1710805+910805+923265(Top 91%)10060(Top 92%)10060(Top 216%)
25.2M25.20 mi0.35 mi25326+3108051080524032(Top 94%)10387(Top 95%)10387(Top 223%)
Finish26.22 mi1.02 mi25315+1110800+510800+523618(Top 92%)10227(Top 94%)10227(Top 219%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

25409

Females

10839

F18-39

10839

5K→10K

3.1 - 6.2 mi

Top 100%
×5stories
+79ft-138ft

Overall

25533

Females

10919

F18-39

10919

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

25409

Females

10839

F18-39

10839

15K→20K

9.3 - 12.4 mi

Top 98%
×5stories
+106ft-86ft

Overall

25056

Females

10626

F18-39

10626

20K→Half

12.4 - 13.1 mi

Top 98%
×2stories
+19ft-37ft

Overall

24938

Females

10591

F18-39

10591

Half→25K

13.1 - 15.5 mi

Top 98%
×4stories
+66ft-88ft

Overall

25134

Females

10706

F18-39

10706

25K→30K

15.5 - 18.6 mi

Top 98%
×9stories
+181ft-148ft

Overall

25036

Females

10708

F18-39

10708

30K→20M

18.6 - 20.0 mi

Top 91%
×5stories
+64ft-50ft

Overall

23362

Females

9941

F18-39

9941

20M→21M

20.0 - 21.0 mi

Top 90%
×8stories
+106ft-24ft

Overall

22953

Females

9775

F18-39

9775

21M→35K

21.0 - 21.8 mi

Top 99%
×7stories
+17ft-86ft

Overall

25314

Females

10846

F18-39

10846

35K→23M

21.8 - 23.0 mi

Top 88%
×5stories
+23ft-63ft

Overall

22557

Females

9639

F18-39

9639

23M→24M

23.0 - 24.0 mi

Top 91%
×6stories
+12ft-82ft

Overall

23232

Females

10024

F18-39

10024

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

23265

Females

10060

F18-39

10060

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

24032

Females

10387

F18-39

10387

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

23618

Females

10227

F18-39

10227

Passing Analysis

Category:
Athletes Passed
303
Passed By
119
Net Change
+184
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25499
5K → 10K331-28#25499#25527
10K → 15K71+6#25527#25521
15K → 20K430+43#25521#25478
20K → Half72+5#25478#25473
Half → 25K209+11#25473#25462
25K → 30K2214+8#25462#25454
30K → 20M371+36#25454#25418
20M → 21M322+30#25418#25388
21M → 35K234-32#25388#25420
35K → 23M482+46#25420#25374
23M → 24M324+28#25374#25346
24M → 40K225+17#25346#25329
40K → 25.2M96+3#25329#25326
25.2M → Finish198+11#25326#25315
TOTALS303119+184
📊

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