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BOSTON MARATHON 2023

Julia Lee

Bib: 9389•F

NJ

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 21%
Gender (Female)
#0 / 11423
Top 5%
Division (F18-39)
#0 / 4884
Top 9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:16
Rank: #5122
Start → 5K
21:16 | 6:51/mi
10K· 6.21 mi
42:14
Rank: #4945 (+177)
5K → 10K
20:58 | 6:45/mi
15K· 9.32 mi
1:03:24
Rank: #5024 (-79)
10K → 15K
21:10 | 6:49/mi
20K· 12.43 mi
1:24:53
Rank: #5139 (-115)
15K → 20K
21:29 | 6:55/mi
Half· 13.11 mi
1:29:32
Rank: #5162 (-23)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:46:38
Rank: #5327 (-165)
Half → 25K
17:06 | 7:03/mi
30K· 18.64 mi
2:09:44
Rank: #5582 (-255)
25K → 30K
23:06 | 7:26/mi
20M
2:19:56
Rank: #5631 (-49)
30K → 20M
10:12 | 7:30/mi
21M
2:27:56
Rank: #5678 (-47)
20M → 21M
8:00 | 8:00/mi
35K· 21.75 mi
2:33:15
Rank: #5672 (+6)
21M → 35K
5:19 | 7:06/mi
23M
2:42:48
Rank: #5679 (-7)
35K → 23M
9:33 | 7:38/mi
24M
2:50:00
Rank: #5628 (+51)
23M → 24M
7:12 | 7:12/mi
40K· 24.85 mi
2:56:20
Rank: #5612 (+16)
24M → 40K
6:20 | 7:24/mi
25.2M
2:59:06
Rank: #5599 (+13)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:06:32
Rank: #5596 (+3)
25.2M → Finish
7:26 | 7:18/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:32
Pace6:50 /mi
2nd Half
Distance13.11 mi
Time1:37:00
Pace7:24 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:0721:166:5121:16
6:51
-
10K
6.21 mi11:08:0542:146:4820:58
6:45
-0:06
15K
9.32 mi11:29:151:03:246:4821:10
6:49
+0:04
20K
12.43 mi11:50:441:24:536:5021:29
6:55
+0:06
Half
13.11 mi11:55:231:29:326:504:39
6:49
-0:06
25K
15.53 mi12:12:291:46:386:5217:06
7:03
+0:14
30K
18.64 mi12:35:352:09:446:5823:06
7:26
+0:23
20M
20.00 mi12:45:472:19:567:0010:12
7:30
+0:04
21M
21.00 mi12:53:472:27:567:038:00
8:00
+0:30
35K
21.75 mi12:59:062:33:157:035:19
7:06
-0:54
23M
23.00 mi13:08:392:42:487:059:33
7:38
+0:32
24M
24.00 mi13:15:512:50:007:057:12
7:12
-0:26
40K
24.85 mi13:22:112:56:207:066:20
7:24
+0:12
25.2M
25.20 mi13:24:572:59:067:062:46
8:01
+0:37
Finish
26.22 mi13:32:233:06:327:077:26
7:18
-0:43

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

6:45 /mi

Average Pace

7:07 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:12:55

71% of race

Time at Steady Pace

42:51

23% of race

Time at Slower Pace

10:46

6% of race

Average Pace: 7:07 /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 mi10:47:0721:166:5121:16
6:51
#5122
10K
6.21 mi11:08:0542:146:4820:58
6:45
#4945
15K
9.32 mi11:29:151:03:246:4821:10
6:49
#5024
20K
12.43 mi11:50:441:24:536:5021:29
6:55
#5139
Half
13.11 mi11:55:231:29:326:504:39
6:49
#5162
25K
15.53 mi12:12:291:46:386:5217:06
7:03
#5327
30K
18.64 mi12:35:352:09:446:5823:06
7:26
#5582
20M
20.00 mi12:45:472:19:567:0010:12
7:30
#5631
21M
21.00 mi12:53:472:27:567:038:00
8:00
#5678
35K
21.75 mi12:59:062:33:157:035:19
7:06
#5672
23M
23.00 mi13:08:392:42:487:059:33
7:38
#5679
24M
24.00 mi13:15:512:50:007:057:12
7:12
#5628
40K
24.85 mi13:22:112:56:207:066:20
7:24
#5612
25.2M
25.20 mi13:24:572:59:067:062:46
8:01
#5599
Finish
26.22 mi13:32:233:06:327:077:26
7:18
#5596
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi51223673675267(Top 20%)396(Top 3%)396(Top 8%)
10K6.21 mi3.10 mi4945+177351+16351+164823(Top 18%)338(Top 3%)338(Top 7%)
15K9.32 mi3.11 mi5024-79353-2353-25267(Top 20%)396(Top 3%)396(Top 8%)
20K12.43 mi3.11 mi5139-115370-17370-175459(Top 21%)421(Top 4%)421(Top 9%)
Half13.11 mi0.68 mi5162-23367+3367+35480(Top 21%)428(Top 4%)428(Top 9%)
25K15.53 mi2.42 mi5327-165393-26393-265877(Top 22%)520(Top 5%)520(Top 11%)
30K18.64 mi3.11 mi5582-255446-53446-536809(Top 26%)863(Top 8%)863(Top 18%)
20M20.00 mi1.36 mi5631-49457-11457-116832(Top 26%)957(Top 8%)957(Top 20%)
21M21.00 mi1.00 mi5678-47472-15472-157357(Top 28%)1253(Top 11%)1253(Top 26%)
35K21.75 mi0.75 mi5672+6474-2474-25978(Top 22%)748(Top 7%)748(Top 15%)
23M23.00 mi1.25 mi5679-7498-24498-247275(Top 27%)1272(Top 11%)1272(Top 26%)
24M24.00 mi1.00 mi5628+51497+1497+15766(Top 22%)807(Top 7%)807(Top 17%)
40K24.85 mi0.85 mi5612+16502-5502-56156(Top 23%)1029(Top 9%)1029(Top 21%)
25.2M25.20 mi0.35 mi5599+13507-5507-56688(Top 25%)1274(Top 11%)1274(Top 26%)
Finish26.22 mi1.02 mi5596+3522-15522-157109(Top 27%)1456(Top 13%)1456(Top 30%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5267

Females

396

F18-39

396

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4823

Females

338

F18-39

338

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5267

Females

396

F18-39

396

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5459

Females

421

F18-39

421

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5480

Females

428

F18-39

428

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

5877

Females

520

F18-39

520

25K→30K

15.5 - 18.6 mi

Top 26%
×9stories
+181ft-148ft

Overall

6809

Females

863

F18-39

863

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

6832

Females

957

F18-39

957

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7357

Females

1253

F18-39

1253

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

5978

Females

748

F18-39

748

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7275

Females

1272

F18-39

1272

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

5766

Females

807

F18-39

807

24M→40K

24.0 - 24.9 mi

Top 23%
×1story
+6ft-20ft

Overall

6156

Females

1029

F18-39

1029

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6688

Females

1274

F18-39

1274

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7109

Females

1456

F18-39

1456

Passing Analysis

Category:
Athletes Passed
983
Passed By
1457
Net Change
-474
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5122
5K → 10K307130+177#5122#4945
10K → 15K84163-79#4945#5024
15K → 20K72187-115#5024#5139
20K → Half1639-23#5139#5162
Half → 25K55220-165#5162#5327
25K → 30K60315-255#5327#5582
30K → 20M3988-49#5582#5631
20M → 21M3885-47#5631#5678
21M → 35K3529+6#5678#5672
35K → 23M7582-7#5672#5679
23M → 24M7019+51#5679#5628
24M → 40K4933+16#5628#5612
40K → 25.2M3118+13#5612#5599
25.2M → Finish5249+3#5599#5596
TOTALS9831457-474
📊

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