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BOSTON MARATHON 2023

Yukari Ishikawa

Bib: 21399•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 37%
Masters (Masters Women)
#0 / 6539
Top 23%
Division (F55-59)
#0 / 815
Top 7%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:42
Rank: #13660
Start → 5K
24:42 | 7:57/mi
10K· 6.21 mi
48:38
Rank: #12955 (+705)
5K → 10K
23:56 | 7:42/mi
15K· 9.32 mi
1:12:47
Rank: #12775 (+180)
10K → 15K
24:09 | 7:46/mi
20K· 12.43 mi
1:37:11
Rank: #12585 (+190)
15K → 20K
24:24 | 7:51/mi
Half· 13.11 mi
1:42:28
Rank: #12551 (+34)
20K → Half
5:17 | 7:45/mi
25K· 15.53 mi
2:01:38
Rank: #12446 (+105)
Half → 25K
19:10 | 7:54/mi
30K· 18.64 mi
2:27:30
Rank: #12577 (-131)
25K → 30K
25:52 | 8:20/mi
20M
2:39:37
Rank: #12889 (-312)
30K → 20M
12:07 | 8:55/mi
21M
2:48:32
Rank: #12861 (+28)
20M → 21M
8:55 | 8:55/mi
35K· 21.75 mi
2:54:44
Rank: #12905 (-44)
21M → 35K
6:12 | 8:17/mi
23M
3:05:44
Rank: #13007 (-102)
35K → 23M
11:00 | 8:47/mi
24M
3:14:27
Rank: #13139 (-132)
23M → 24M
8:43 | 8:43/mi
40K· 24.85 mi
3:22:17
Rank: #13293 (-154)
24M → 40K
7:50 | 9:10/mi
25.2M
3:25:52
Rank: #13407 (-114)
40K → 25.2M
3:35 | 10:23/mi
Finish· 26.22 mi
3:35:40
Rank: #13820 (-413)
25.2M → Finish
9:48 | 9:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:28
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time1:53:12
Pace8:38 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0224:427:5724:42
7:57
-
10K
6.21 mi11:39:5848:387:5023:56
7:42
-0:15
15K
9.32 mi12:04:071:12:477:4924:09
7:46
+0:04
20K
12.43 mi12:28:311:37:117:4924:24
7:51
+0:05
Half
13.11 mi12:33:481:42:287:495:17
7:45
-0:06
25K
15.53 mi12:52:582:01:387:5019:10
7:54
+0:09
30K
18.64 mi13:18:502:27:307:5525:52
8:20
+0:26
20M
20.00 mi13:30:572:39:377:5912:07
8:55
+0:35
21M
21.00 mi13:39:522:48:328:028:55
8:55
0:00
35K
21.75 mi13:46:042:54:448:026:12
8:17
-0:38
23M
23.00 mi13:57:043:05:448:0511:00
8:47
+0:30
24M
24.00 mi14:05:473:14:278:068:43
8:43
-0:04
40K
24.85 mi14:13:373:22:178:087:50
9:10
+0:27
25.2M
25.20 mi14:17:123:25:528:103:35
10:23
+1:13
Finish
26.22 mi14:27:003:35:408:149:48
9:37
-0:46

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

7:42 /mi

Average Pace

8:14 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:01:38

56% of race

Time at Steady Pace

32:04

15% of race

Time at Slower Pace

1:01:58

29% of race

Average Pace: 8:14 /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 mi11:16:0224:427:5724:42
7:57
#13660
10K
6.21 mi11:39:5848:387:5023:56
7:42
#12955
15K
9.32 mi12:04:071:12:477:4924:09
7:46
#12775
20K
12.43 mi12:28:311:37:117:4924:24
7:51
#12585
Half
13.11 mi12:33:481:42:287:495:17
7:45
#12551
25K
15.53 mi12:52:582:01:387:5019:10
7:54
#12446
30K
18.64 mi13:18:502:27:307:5525:52
8:20
#12577
20M
20.00 mi13:30:572:39:377:5912:07
8:55
#12889
21M
21.00 mi13:39:522:48:328:028:55
8:55
#12861
35K
21.75 mi13:46:042:54:448:026:12
8:17
#12905
23M
23.00 mi13:57:043:05:448:0511:00
8:47
#13007
24M
24.00 mi14:05:473:14:278:068:43
8:43
#13139
40K
24.85 mi14:13:373:22:178:087:50
9:10
#13293
25.2M
25.20 mi14:17:123:25:528:103:35
10:23
#13407
Finish
26.22 mi14:27:003:35:408:149:48
9:37
#13820
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi136603823382312512(Top 47%)3195(Top 28%)3195(Top 392%)
10K6.21 mi3.10 mi12955+7053423+4003423+40012292(Top 46%)3040(Top 27%)3040(Top 373%)
15K9.32 mi3.11 mi12775+1803324+993324+9912512(Top 47%)3195(Top 28%)3195(Top 392%)
20K12.43 mi3.11 mi12585+1903253+713253+7112217(Top 46%)3099(Top 27%)3099(Top 380%)
Half13.11 mi0.68 mi12551+343233+203233+2012341(Top 46%)3133(Top 27%)3133(Top 384%)
25K15.53 mi2.42 mi12446+1053198+353198+3511984(Top 45%)3071(Top 27%)3071(Top 377%)
30K18.64 mi3.11 mi12577-1313307-1093307-10913188(Top 50%)3864(Top 34%)3864(Top 474%)
20M20.00 mi1.36 mi12889-3123505-1983505-19816134(Top 61%)5656(Top 50%)5656(Top 694%)
21M21.00 mi1.00 mi12861+283510-53510-512895(Top 48%)3901(Top 34%)3901(Top 479%)
35K21.75 mi0.75 mi12905-443552-423552-4214044(Top 53%)4580(Top 40%)4580(Top 562%)
23M23.00 mi1.25 mi13007-1023633-813633-8114918(Top 56%)5118(Top 45%)5118(Top 628%)
24M24.00 mi1.00 mi13139-1323733-1003733-10015753(Top 59%)5666(Top 50%)5666(Top 695%)
40K24.85 mi0.85 mi13293-1543836-1033836-10316925(Top 64%)6349(Top 56%)6349(Top 779%)
25.2M25.20 mi0.35 mi13407-1143918-823918-8218748(Top 70%)7352(Top 64%)7352(Top 902%)
Finish26.22 mi1.02 mi13820-4134181-2634181-26320536(Top 77%)8304(Top 73%)8304(Top 1019%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21stories
+97ft-345ft

Overall

12512

Females

3195

F55-59

3195

5K→10K

3.1 - 6.2 mi

Top 46%
×5stories
+79ft-138ft

Overall

12292

Females

3040

F55-59

3040

10K→15K

6.2 - 9.3 mi

Top 47%
×3stories
+67ft-78ft

Overall

12512

Females

3195

F55-59

3195

15K→20K

9.3 - 12.4 mi

Top 46%
×5stories
+106ft-86ft

Overall

12217

Females

3099

F55-59

3099

20K→Half

12.4 - 13.1 mi

Top 46%
×2stories
+19ft-37ft

Overall

12341

Females

3133

F55-59

3133

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

11984

Females

3071

F55-59

3071

25K→30K

15.5 - 18.6 mi

Top 50%
×9stories
+181ft-148ft

Overall

13188

Females

3864

F55-59

3864

30K→20M

18.6 - 20.0 mi

Top 61%
×5stories
+64ft-50ft

Overall

16134

Females

5656

F55-59

5656

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12895

Females

3901

F55-59

3901

21M→35K

21.0 - 21.8 mi

Top 53%
×7stories
+17ft-86ft

Overall

14044

Females

4580

F55-59

4580

35K→23M

21.8 - 23.0 mi

Top 56%
×5stories
+23ft-63ft

Overall

14918

Females

5118

F55-59

5118

23M→24M

23.0 - 24.0 mi

Top 59%
×6stories
+12ft-82ft

Overall

15753

Females

5666

F55-59

5666

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

16925

Females

6349

F55-59

6349

40K→25.2M

24.9 - 25.2 mi

Top 70%
×1story
+13ft-16ft

Overall

18748

Females

7352

F55-59

7352

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2stories
+22ft-21ft

Overall

20536

Females

8304

F55-59

8304

Passing Analysis

Category:
Athletes Passed
2069
Passed By
2229
Net Change
-160
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13660
5K → 10K79489+705#13660#12955
10K → 15K301121+180#12955#12775
15K → 20K28494+190#12775#12585
20K → Half5016+34#12585#12551
Half → 25K17267+105#12551#12446
25K → 30K152283-131#12446#12577
30K → 20M35347-312#12577#12889
20M → 21M10880+28#12889#12861
21M → 35K3377-44#12861#12905
35K → 23M61163-102#12905#13007
23M → 24M30162-132#13007#13139
24M → 40K23177-154#13139#13293
40K → 25.2M16130-114#13293#13407
25.2M → Finish10423-413#13407#13820
TOTALS20692229-160
📊

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