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BOSTON MARATHON 2023

Jodie Isomura

Bib: 19780•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 40%
Division (F45-49)
#0 / 1817
Top 48%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:17
Rank: #15000
Start → 5K
25:17 | 8:08/mi
10K· 6.21 mi
50:49
Rank: #15676 (-676)
5K → 10K
25:32 | 8:13/mi
15K· 9.32 mi
1:16:28
Rank: #15863 (-187)
10K → 15K
25:39 | 8:15/mi
20K· 12.43 mi
1:42:46
Rank: #16053 (-190)
15K → 20K
26:18 | 8:28/mi
Half· 13.11 mi
1:48:29
Rank: #16100 (-47)
20K → Half
5:43 | 8:23/mi
25K· 15.53 mi
2:09:13
Rank: #16164 (-64)
Half → 25K
20:44 | 8:33/mi
30K· 18.64 mi
2:36:50
Rank: #16235 (-71)
25K → 30K
27:37 | 8:53/mi
20M
2:49:12
Rank: #16287 (-52)
30K → 20M
12:22 | 9:06/mi
21M
2:58:57
Rank: #16324 (-37)
20M → 21M
9:45 | 9:45/mi
35K· 21.75 mi
3:05:37
Rank: #16354 (-30)
21M → 35K
6:40 | 8:55/mi
23M
3:17:00
Rank: #16358 (-4)
35K → 23M
11:23 | 9:05/mi
24M
3:25:55
Rank: #16378 (-20)
23M → 24M
8:55 | 8:55/mi
40K· 24.85 mi
3:33:45
Rank: #16385 (-7)
24M → 40K
7:50 | 9:10/mi
25.2M
3:37:13
Rank: #16408 (-23)
40K → 25.2M
3:28 | 10:03/mi
Finish· 26.22 mi
3:46:16
Rank: #16456 (-48)
25.2M → Finish
9:03 | 8:53/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:29
Pace8:17 /mi
2nd Half
Distance13.11 mi
Time1:57:47
Pace8:59 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4125:178:0825:17
8:08
-
10K
6.21 mi11:42:1350:498:1125:32
8:13
+0:05
15K
9.32 mi12:07:521:16:288:1225:39
8:15
+0:02
20K
12.43 mi12:34:101:42:468:1626:18
8:28
+0:13
Half
13.11 mi12:39:531:48:298:175:43
8:23
-0:05
25K
15.53 mi13:00:372:09:138:1920:44
8:33
+0:10
30K
18.64 mi13:28:142:36:508:2527:37
8:53
+0:20
20M
20.00 mi13:40:362:49:128:2812:22
9:06
+0:13
21M
21.00 mi13:50:212:58:578:319:45
9:45
+0:39
35K
21.75 mi13:57:013:05:378:326:40
8:55
-0:50
23M
23.00 mi14:08:243:17:008:3411:23
9:05
+0:10
24M
24.00 mi14:17:193:25:558:358:55
8:55
-0:10
40K
24.85 mi14:25:093:33:458:367:50
9:10
+0:15
25.2M
25.20 mi14:28:373:37:138:373:28
10:03
+0:53
Finish
26.22 mi14:37:403:46:168:389:03
8:53
-1:10

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

8:08 /mi

Average Pace

8:38 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:13

57% of race

Time at Steady Pace

1:16:00

34% of race

Time at Slower Pace

21:03

9% of race

Average Pace: 8:38 /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 mi11:16:4125:178:0825:17
8:08
#15000
10K
6.21 mi11:42:1350:498:1125:32
8:13
#15676
15K
9.32 mi12:07:521:16:288:1225:39
8:15
#15863
20K
12.43 mi12:34:101:42:468:1626:18
8:28
#16053
Half
13.11 mi12:39:531:48:298:175:43
8:23
#16100
25K
15.53 mi13:00:372:09:138:1920:44
8:33
#16164
30K
18.64 mi13:28:142:36:508:2527:37
8:53
#16235
20M
20.00 mi13:40:362:49:128:2812:22
9:06
#16287
21M
21.00 mi13:50:212:58:578:319:45
9:45
#16324
35K
21.75 mi13:57:013:05:378:326:40
8:55
#16354
23M
23.00 mi14:08:243:17:008:3411:23
9:05
#16358
24M
24.00 mi14:17:193:25:558:358:55
8:55
#16378
40K
24.85 mi14:25:093:33:458:367:50
9:10
#16385
25.2M
25.20 mi14:28:373:37:138:373:28
10:03
#16408
Finish
26.22 mi14:37:403:46:168:389:03
8:53
#16456
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi150004642464216268(Top 61%)5453(Top 48%)5453(Top 300%)
10K6.21 mi3.10 mi15676-6765078-4365078-43616402(Top 62%)5514(Top 48%)5514(Top 303%)
15K9.32 mi3.11 mi15863-1875197-1195197-11916268(Top 61%)5453(Top 48%)5453(Top 300%)
20K12.43 mi3.11 mi16053-1905339-1425339-14216638(Top 62%)5724(Top 50%)5724(Top 315%)
Half13.11 mi0.68 mi16100-475375-365375-3617041(Top 64%)5920(Top 52%)5920(Top 326%)
25K15.53 mi2.42 mi16164-645434-595434-5916505(Top 62%)5724(Top 50%)5724(Top 315%)
30K18.64 mi3.11 mi16235-715524-905524-9016598(Top 62%)5835(Top 51%)5835(Top 321%)
20M20.00 mi1.36 mi16287-525576-525576-5217068(Top 64%)6198(Top 54%)6198(Top 341%)
21M21.00 mi1.00 mi16324-375613-375613-3717064(Top 64%)6227(Top 55%)6227(Top 343%)
35K21.75 mi0.75 mi16354-305635-225635-2217508(Top 66%)6550(Top 57%)6550(Top 360%)
23M23.00 mi1.25 mi16358-45651-165651-1616506(Top 62%)6024(Top 53%)6024(Top 332%)
24M24.00 mi1.00 mi16378-205675-245675-2416866(Top 63%)6281(Top 55%)6281(Top 346%)
40K24.85 mi0.85 mi16385-75708-335708-3316939(Top 64%)6363(Top 56%)6363(Top 350%)
25.2M25.20 mi0.35 mi16408-235726-185726-1817619(Top 66%)6746(Top 59%)6746(Top 371%)
Finish26.22 mi1.02 mi16456-485759-335759-3317428(Top 65%)6602(Top 58%)6602(Top 363%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21stories
+97ft-345ft

Overall

16268

Females

5453

F45-49

5453

5K→10K

3.1 - 6.2 mi

Top 62%
×5stories
+79ft-138ft

Overall

16402

Females

5514

F45-49

5514

10K→15K

6.2 - 9.3 mi

Top 61%
×3stories
+67ft-78ft

Overall

16268

Females

5453

F45-49

5453

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

16638

Females

5724

F45-49

5724

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

17041

Females

5920

F45-49

5920

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

16505

Females

5724

F45-49

5724

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

16598

Females

5835

F45-49

5835

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

17068

Females

6198

F45-49

6198

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

17064

Females

6227

F45-49

6227

21M→35K

21.0 - 21.8 mi

Top 66%
×7stories
+17ft-86ft

Overall

17508

Females

6550

F45-49

6550

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

16506

Females

6024

F45-49

6024

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

16866

Females

6281

F45-49

6281

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

16939

Females

6363

F45-49

6363

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

17619

Females

6746

F45-49

6746

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2stories
+22ft-21ft

Overall

17428

Females

6602

F45-49

6602

Passing Analysis

Category:
Athletes Passed
1068
Passed By
2524
Net Change
-1456
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15000
5K → 10K90766-676#15000#15676
10K → 15K119306-187#15676#15863
15K → 20K108298-190#15863#16053
20K → Half1865-47#16053#16100
Half → 25K127191-64#16100#16164
25K → 30K163234-71#16164#16235
30K → 20M61113-52#16235#16287
20M → 21M66103-37#16287#16324
21M → 35K4171-30#16324#16354
35K → 23M7781-4#16354#16358
23M → 24M6181-20#16358#16378
24M → 40K7279-7#16378#16385
40K → 25.2M2144-23#16385#16408
25.2M → Finish4492-48#16408#16456
TOTALS10682524-1456
📊

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