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BOSTON MARATHON 2023

Grace Lee

Bib: 30203•F

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:19
Rank: #22811
Start → 5K
30:19 | 9:45/mi
10K· 6.21 mi
1:00:19
Rank: #22928 (-117)
5K → 10K
30:00 | 9:39/mi
15K· 9.32 mi
1:30:38
Rank: #22953 (-25)
10K → 15K
30:19 | 9:45/mi
20K· 12.43 mi
2:02:53
Rank: #23163 (-210)
15K → 20K
32:15 | 10:23/mi
Half· 13.11 mi
2:09:38
Rank: #23153 (+10)
20K → Half
6:45 | 9:54/mi
25K· 15.53 mi
2:34:39
Rank: #23081 (+72)
Half → 25K
25:01 | 10:19/mi
30K· 18.64 mi
3:08:13
Rank: #23041 (+40)
25K → 30K
33:34 | 10:48/mi
20M
3:23:51
Rank: #23065 (-24)
30K → 20M
15:38 | 11:30/mi
21M
3:35:30
Rank: #23011 (+54)
20M → 21M
11:39 | 11:39/mi
35K· 21.75 mi
3:43:48
Rank: #23035 (-24)
21M → 35K
8:18 | 11:06/mi
23M
3:57:52
Rank: #23009 (+26)
35K → 23M
14:04 | 11:14/mi
24M
4:09:05
Rank: #23021 (-12)
23M → 24M
11:13 | 11:13/mi
40K· 24.85 mi
4:18:38
Rank: #22994 (+27)
24M → 40K
9:33 | 11:10/mi
25.2M
4:22:46
Rank: #22990 (+4)
40K → 25.2M
4:08 | 11:59/mi
Finish· 26.22 mi
4:33:22
Rank: #22986 (+4)
25.2M → Finish
10:36 | 10:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:09:38
Pace9:53 /mi
2nd Half
Distance13.11 mi
Time2:23:44
Pace10:58 /mi
📊Positive Split: 10.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:1830:199:4530:19
9:45
-
10K
6.21 mi12:19:181:00:199:4230:00
9:39
-0:06
15K
9.32 mi12:49:371:30:389:4330:19
9:45
+0:06
20K
12.43 mi13:21:522:02:539:5332:15
10:23
+0:38
Half
13.11 mi13:28:372:09:389:536:45
9:54
-0:29
25K
15.53 mi13:53:382:34:399:5725:01
10:19
+0:25
30K
18.64 mi14:27:123:08:1310:0633:34
10:48
+0:29
20M
20.00 mi14:42:503:23:5110:1215:38
11:30
+0:42
21M
21.00 mi14:54:293:35:3010:1611:39
11:39
+0:09
35K
21.75 mi15:02:473:43:4810:178:18
11:06
-0:33
23M
23.00 mi15:16:513:57:5210:2114:04
11:14
+0:08
24M
24.00 mi15:28:044:09:0510:2311:13
11:13
-0:01
40K
24.85 mi15:37:374:18:3810:249:33
11:10
-0:03
25.2M
25.20 mi15:41:454:22:4610:264:08
11:59
+0:49
Finish
26.22 mi15:52:214:33:2210:2610:36
10:24
-1:35

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

9:39 /mi

Average Pace

10:26 /mi

Slowest Pace

11:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:15

60% of race

Time at Steady Pace

41:52

15% of race

Time at Slower Pace

1:06:15

24% of race

Average Pace: 10:26 /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 mi11:49:1830:199:4530:19
9:45
#22811
10K
6.21 mi12:19:181:00:199:4230:00
9:39
#22928
15K
9.32 mi12:49:371:30:389:4330:19
9:45
#22953
20K
12.43 mi13:21:522:02:539:5332:15
10:23
#23163
Half
13.11 mi13:28:372:09:389:536:45
9:54
#23153
25K
15.53 mi13:53:382:34:399:5725:01
10:19
#23081
30K
18.64 mi14:27:123:08:1310:0633:34
10:48
#23041
20M
20.00 mi14:42:503:23:5110:1215:38
11:30
#23065
21M
21.00 mi14:54:293:35:3010:1611:39
11:39
#23011
35K
21.75 mi15:02:473:43:4810:178:18
11:06
#23035
23M
23.00 mi15:16:513:57:5210:2114:04
11:14
#23009
24M
24.00 mi15:28:044:09:0510:2311:13
11:13
#23021
40K
24.85 mi15:37:374:18:3810:249:33
11:10
#22994
25.2M
25.20 mi15:41:454:22:4610:264:08
11:59
#22990
Finish
26.22 mi15:52:214:33:2210:2610:36
10:24
#22986
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi228119282928222948(Top 86%)9315(Top 82%)9315(Top 513%)
10K6.21 mi3.10 mi22928-1179319-379319-3722948(Top 86%)9309(Top 81%)9309(Top 512%)
15K9.32 mi3.11 mi22953-259331-129331-1222948(Top 86%)9315(Top 82%)9315(Top 513%)
20K12.43 mi3.11 mi23163-2109439-1089439-10823619(Top 89%)9695(Top 85%)9695(Top 534%)
Half13.11 mi0.68 mi23153+109431+89431+823086(Top 87%)9399(Top 82%)9399(Top 517%)
25K15.53 mi2.42 mi23081+729402+299402+2922885(Top 86%)9322(Top 82%)9322(Top 513%)
30K18.64 mi3.11 mi23041+409406-49406-422803(Top 86%)9353(Top 82%)9353(Top 515%)
20M20.00 mi1.36 mi23065-249432-269432-2623523(Top 88%)9800(Top 86%)9800(Top 539%)
21M21.00 mi1.00 mi23011+549411+219411+2122164(Top 83%)9091(Top 80%)9091(Top 500%)
35K21.75 mi0.75 mi23035-249429-189429-1823470(Top 88%)9854(Top 86%)9854(Top 542%)
23M23.00 mi1.25 mi23009+269429942922793(Top 86%)9484(Top 83%)9484(Top 522%)
24M24.00 mi1.00 mi23021-129451-229451-2223435(Top 88%)9863(Top 86%)9863(Top 543%)
40K24.85 mi0.85 mi22994+279442+99442+922694(Top 85%)9500(Top 83%)9500(Top 523%)
25.2M25.20 mi0.35 mi22990+49436+69436+622501(Top 85%)9401(Top 82%)9401(Top 517%)
Finish26.22 mi1.02 mi22986+49441-59441-522816(Top 86%)9559(Top 84%)9559(Top 526%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21stories
+97ft-345ft

Overall

22948

Females

9315

F45-49

9315

5K→10K

3.1 - 6.2 mi

Top 86%
×5stories
+79ft-138ft

Overall

22948

Females

9309

F45-49

9309

10K→15K

6.2 - 9.3 mi

Top 86%
×3stories
+67ft-78ft

Overall

22948

Females

9315

F45-49

9315

15K→20K

9.3 - 12.4 mi

Top 89%
×5stories
+106ft-86ft

Overall

23619

Females

9695

F45-49

9695

20K→Half

12.4 - 13.1 mi

Top 87%
×2stories
+19ft-37ft

Overall

23086

Females

9399

F45-49

9399

Half→25K

13.1 - 15.5 mi

Top 86%
×4stories
+66ft-88ft

Overall

22885

Females

9322

F45-49

9322

25K→30K

15.5 - 18.6 mi

Top 86%
×9stories
+181ft-148ft

Overall

22803

Females

9353

F45-49

9353

30K→20M

18.6 - 20.0 mi

Top 88%
×5stories
+64ft-50ft

Overall

23523

Females

9800

F45-49

9800

20M→21M

20.0 - 21.0 mi

Top 83%
×8stories
+106ft-24ft

Overall

22164

Females

9091

F45-49

9091

21M→35K

21.0 - 21.8 mi

Top 88%
×7stories
+17ft-86ft

Overall

23470

Females

9854

F45-49

9854

35K→23M

21.8 - 23.0 mi

Top 86%
×5stories
+23ft-63ft

Overall

22793

Females

9484

F45-49

9484

23M→24M

23.0 - 24.0 mi

Top 88%
×6stories
+12ft-82ft

Overall

23435

Females

9863

F45-49

9863

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

22694

Females

9500

F45-49

9500

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22501

Females

9401

F45-49

9401

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2stories
+22ft-21ft

Overall

22816

Females

9559

F45-49

9559

Passing Analysis

Category:
Athletes Passed
1048
Passed By
1223
Net Change
-175
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22811
5K → 10K189306-117#22811#22928
10K → 15K135160-25#22928#22953
15K → 20K67277-210#22953#23163
20K → Half3020+10#23163#23153
Half → 25K13462+72#23153#23081
25K → 30K141101+40#23081#23041
30K → 20M4771-24#23041#23065
20M → 21M7521+54#23065#23011
21M → 35K2246-24#23011#23035
35K → 23M6640+26#23035#23009
23M → 24M3648-12#23009#23021
24M → 40K4821+27#23021#22994
40K → 25.2M1612+4#22994#22990
25.2M → Finish4238+4#22990#22986
TOTALS10481223-175
📊

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