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BOSTON MARATHON 2023

Grace Kim

Bib: 20909•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F60-64)
#0 / 527
Top 20%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:47
Rank: #18357
Start → 5K
26:47 | 8:37/mi
10K· 6.21 mi
53:01
Rank: #18101 (+256)
5K → 10K
26:14 | 8:27/mi
15K· 9.32 mi
1:19:43
Rank: #18191 (-90)
10K → 15K
26:42 | 8:36/mi
20K· 12.43 mi
1:46:38
Rank: #18094 (+97)
15K → 20K
26:55 | 8:40/mi
Half· 13.11 mi
1:52:26
Rank: #18071 (+23)
20K → Half
5:48 | 8:30/mi
25K· 15.53 mi
2:13:05
Rank: #17733 (+338)
Half → 25K
20:39 | 8:31/mi
30K· 18.64 mi
2:40:53
Rank: #17554 (+179)
25K → 30K
27:48 | 8:57/mi
20M
2:53:10
Rank: #17478 (+76)
30K → 20M
12:17 | 9:02/mi
21M
3:03:09
Rank: #17505 (-27)
20M → 21M
9:59 | 9:59/mi
35K· 21.75 mi
3:09:52
Rank: #17530 (-25)
21M → 35K
6:43 | 8:59/mi
23M
3:22:02
Rank: #17669 (-139)
35K → 23M
12:10 | 9:43/mi
24M
3:31:40
Rank: #17834 (-165)
23M → 24M
9:38 | 9:38/mi
40K· 24.85 mi
3:40:21
Rank: #17982 (-148)
24M → 40K
8:41 | 10:09/mi
25.2M
3:44:18
Rank: #18075 (-93)
40K → 25.2M
3:57 | 11:27/mi
Finish· 26.22 mi
3:54:25
Rank: #18250 (-175)
25.2M → Finish
10:07 | 9:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:26
Pace8:35 /mi
2nd Half
Distance13.11 mi
Time2:01:59
Pace9:18 /mi
📊Positive Split: 8.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:5226:478:3726:47
8:37
-
10K
6.21 mi11:45:0653:018:3226:14
8:27
-0:10
15K
9.32 mi12:11:481:19:438:3326:42
8:36
+0:09
20K
12.43 mi12:38:431:46:388:3526:55
8:40
+0:04
Half
13.11 mi12:44:311:52:268:355:48
8:30
-0:10
25K
15.53 mi13:05:102:13:058:3420:39
8:31
+0:01
30K
18.64 mi13:32:582:40:538:3827:48
8:57
+0:26
20M
20.00 mi13:45:152:53:108:3912:17
9:02
+0:05
21M
21.00 mi13:55:143:03:098:439:59
9:59
+0:57
35K
21.75 mi14:01:573:09:528:446:43
8:59
-1:00
23M
23.00 mi14:14:073:22:028:4712:10
9:43
+0:44
24M
24.00 mi14:23:453:31:408:499:38
9:38
-0:05
40K
24.85 mi14:32:263:40:218:528:41
10:09
+0:31
25.2M
25.20 mi14:36:233:44:188:543:57
11:27
+1:18
Finish
26.22 mi14:46:303:54:258:5710:07
9:56
-1:31

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

8:27 /mi

Average Pace

8:57 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

52:41

22% of race

Time at Steady Pace

2:07:12

54% of race

Time at Slower Pace

54:32

23% of race

Average Pace: 8:56 /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 mi11:18:5226:478:3726:47
8:37
#18357
10K
6.21 mi11:45:0653:018:3226:14
8:27
#18101
15K
9.32 mi12:11:481:19:438:3326:42
8:36
#18191
20K
12.43 mi12:38:431:46:388:3526:55
8:40
#18094
Half
13.11 mi12:44:311:52:268:355:48
8:30
#18071
25K
15.53 mi13:05:102:13:058:3420:39
8:31
#17733
30K
18.64 mi13:32:582:40:538:3827:48
8:57
#17554
20M
20.00 mi13:45:152:53:108:3912:17
9:02
#17478
21M
21.00 mi13:55:143:03:098:439:59
9:59
#17505
35K
21.75 mi14:01:573:09:528:446:43
8:59
#17530
23M
23.00 mi14:14:073:22:028:4712:10
9:43
#17669
24M
24.00 mi14:23:453:31:408:499:38
9:38
#17834
40K
24.85 mi14:32:263:40:218:528:41
10:09
#17982
25.2M
25.20 mi14:36:233:44:188:543:57
11:27
#18075
Finish
26.22 mi14:46:303:54:258:5710:07
9:56
#18250
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi183576784678418414(Top 69%)6746(Top 59%)6746(Top 1280%)
10K6.21 mi3.10 mi18101+2566587+1976587+19717905(Top 67%)6426(Top 56%)6426(Top 1219%)
15K9.32 mi3.11 mi18191-906636-496636-4918414(Top 69%)6746(Top 59%)6746(Top 1280%)
20K12.43 mi3.11 mi18094+976568+686568+6817911(Top 67%)6463(Top 57%)6463(Top 1226%)
Half13.11 mi0.68 mi18071+236552+166552+1617773(Top 67%)6351(Top 56%)6351(Top 1205%)
25K15.53 mi2.42 mi17733+3386373+1796373+17916332(Top 61%)5639(Top 49%)5639(Top 1070%)
30K18.64 mi3.11 mi17554+1796291+826291+8216915(Top 64%)6020(Top 53%)6020(Top 1142%)
20M20.00 mi1.36 mi17478+766265+266265+2616774(Top 63%)6025(Top 53%)6025(Top 1143%)
21M21.00 mi1.00 mi17505-276299-346299-3417986(Top 68%)6751(Top 59%)6751(Top 1281%)
35K21.75 mi0.75 mi17530-256329-306329-3017843(Top 67%)6745(Top 59%)6745(Top 1280%)
23M23.00 mi1.25 mi17669-1396425-966425-9619143(Top 72%)7491(Top 66%)7491(Top 1421%)
24M24.00 mi1.00 mi17834-1656525-1006525-10019692(Top 74%)7801(Top 68%)7801(Top 1480%)
40K24.85 mi0.85 mi17982-1486628-1036628-10320387(Top 77%)8268(Top 72%)8268(Top 1569%)
25.2M25.20 mi0.35 mi18075-936690-626690-6221472(Top 81%)8838(Top 77%)8838(Top 1677%)
Finish26.22 mi1.02 mi18250-1756794-1046794-10421558(Top 81%)8879(Top 78%)8879(Top 1685%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21stories
+97ft-345ft

Overall

18414

Females

6746

F60-64

6746

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

17905

Females

6426

F60-64

6426

10K→15K

6.2 - 9.3 mi

Top 69%
×3stories
+67ft-78ft

Overall

18414

Females

6746

F60-64

6746

15K→20K

9.3 - 12.4 mi

Top 67%
×5stories
+106ft-86ft

Overall

17911

Females

6463

F60-64

6463

20K→Half

12.4 - 13.1 mi

Top 67%
×2stories
+19ft-37ft

Overall

17773

Females

6351

F60-64

6351

Half→25K

13.1 - 15.5 mi

Top 61%
×4stories
+66ft-88ft

Overall

16332

Females

5639

F60-64

5639

25K→30K

15.5 - 18.6 mi

Top 64%
×9stories
+181ft-148ft

Overall

16915

Females

6020

F60-64

6020

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16774

Females

6025

F60-64

6025

20M→21M

20.0 - 21.0 mi

Top 68%
×8stories
+106ft-24ft

Overall

17986

Females

6751

F60-64

6751

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

17843

Females

6745

F60-64

6745

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

19143

Females

7491

F60-64

7491

23M→24M

23.0 - 24.0 mi

Top 74%
×6stories
+12ft-82ft

Overall

19692

Females

7801

F60-64

7801

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20387

Females

8268

F60-64

8268

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

21472

Females

8838

F60-64

8838

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2stories
+22ft-21ft

Overall

21558

Females

8879

F60-64

8879

Passing Analysis

Category:
Athletes Passed
1852
Passed By
1745
Net Change
+107
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18357
5K → 10K473217+256#18357#18101
10K → 15K151241-90#18101#18191
15K → 20K212115+97#18191#18094
20K → Half4118+23#18094#18071
Half → 25K34911+338#18071#17733
25K → 30K27192+179#17733#17554
30K → 20M12549+76#17554#17478
20M → 21M74101-27#17478#17505
21M → 35K4368-25#17505#17530
35K → 23M46185-139#17530#17669
23M → 24M27192-165#17669#17834
24M → 40K17165-148#17834#17982
40K → 25.2M8101-93#17982#18075
25.2M → Finish15190-175#18075#18250
TOTALS18521745+107
📊

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