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BOSTON MARATHON 2023

Lucy Zhang

Bib: 23127•F

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:32/mi
29:37
↑ 97↓ 3451.5%
10K· 6.21 mi
9:17/mi
58:28
↑ 79↓ 1380.4%
15K· 9.32 mi
9:12/mi
1:27:03
↑ 67↓ 78
20K· 12.43 mi
9:16/mi
1:55:50
↑ 106↓ 860.1%
Half· 13.11 mi
9:13/mi
2:02:07
↑ 19↓ 370.5%
25K· 15.53 mi
9:20/mi
2:24:45
↑ 66↓ 880.2%
30K· 18.64 mi
9:31/mi
2:54:20
↑ 181↓ 1480.2%
20M
9:27/mi
3:07:11
↑ 64↓ 500.2%
21M
10:09/mi
3:17:20
↑ 106↓ 241.6%
35K· 21.75 mi
8:51/mi
3:23:57
↑ 17↓ 861.7%
23M
9:17/mi
3:35:34
↑ 23↓ 630.6%
24M
8:53/mi
3:44:27
↓ 821.3%
40K· 24.85 mi
9:00/mi
3:52:09
↓ 200.3%
25.2M
9:25/mi
3:55:24
↑ 13↓ 160.2%
Finish· 26.22 mi
8:22/mi
4:03:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time2:02:07
Pace9:19 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time2:01:49
Pace9:18 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:5729:379:3229:37
9:32
-
10K
6.21 mi12:13:4858:289:2528:51
9:17
-0:15
15K
9.32 mi12:42:231:27:039:2028:35
9:12
-0:05
20K
12.43 mi13:11:101:55:509:1928:47
9:16
+0:04
Half
13.11 mi13:17:272:02:079:196:17
9:13
-0:03
25K
15.53 mi13:40:052:24:459:1922:38
9:20
+0:07
30K
18.64 mi14:09:402:54:209:2129:35
9:31
+0:11
20M
20.00 mi14:22:313:07:119:2212:51
9:27
-0:04
21M
21.00 mi14:32:403:17:209:2410:09
10:09
+0:42
35K
21.75 mi14:39:173:23:579:236:37
8:51
-1:18
23M
23.00 mi14:50:543:35:349:2211:37
9:17
+0:26
24M
24.00 mi14:59:473:44:279:218:53
8:53
-0:24
40K
24.85 mi15:07:293:52:099:207:42
9:00
+0:07
25.2M
25.20 mi15:10:443:55:249:203:15
9:25
+0:25
Finish
26.22 mi15:19:164:03:569:198:32
8:22
-1:03

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

8:22 /mi

Average Pace

9:19 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

31:44

13% of race

Time at Steady Pace

2:22:51

59% of race

Time at Slower Pace

1:09:21

28% of race

Average Pace: 9:18 /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 mi11:44:5729:379:3229:37
9:32
#22199
10K
6.21 mi12:13:4858:289:2528:51
9:17
#22075
15K
9.32 mi12:42:231:27:039:2028:35
9:12
#21808
20K
12.43 mi13:11:101:55:509:1928:47
9:16
#21573
Half
13.11 mi13:17:272:02:079:196:17
9:13
#21553
25K
15.53 mi13:40:052:24:459:1922:38
9:20
#21337
30K
18.64 mi14:09:402:54:209:2129:35
9:31
#21005
20M
20.00 mi14:22:313:07:119:2212:51
9:27
#20825
21M
21.00 mi14:32:403:17:209:2410:09
10:09
#20674
35K
21.75 mi14:39:173:23:579:236:37
8:51
#20553
23M
23.00 mi14:50:543:35:349:2211:37
9:17
#20369
24M
24.00 mi14:59:473:44:279:218:53
8:53
#20253
40K
24.85 mi15:07:293:52:099:207:42
9:00
#20118
25.2M
25.20 mi15:10:443:55:249:203:15
9:25
#20050
Finish
26.22 mi15:19:164:03:569:198:32
8:22
#19897
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi221998975897521305(Top 80%)8401(Top 74%)8401(Top 696%)
10K6.21 mi3.10 mi22075+1248892+838892+8321891(Top 82%)8761(Top 77%)8761(Top 726%)
15K9.32 mi3.11 mi21808+2678732+1608732+16021305(Top 80%)8401(Top 74%)8401(Top 696%)
20K12.43 mi3.11 mi21573+2358595+1378595+13720845(Top 78%)8136(Top 71%)8136(Top 674%)
Half13.11 mi0.68 mi21553+208576+198576+1921205(Top 80%)8353(Top 73%)8353(Top 692%)
25K15.53 mi2.42 mi21337+2168451+1258451+12520309(Top 76%)7870(Top 69%)7870(Top 652%)
30K18.64 mi3.11 mi21005+3328285+1668285+16619516(Top 73%)7483(Top 66%)7483(Top 620%)
20M20.00 mi1.36 mi20825+1808194+918194+9118711(Top 70%)7143(Top 63%)7143(Top 592%)
21M21.00 mi1.00 mi20674+1518121+738121+7318568(Top 70%)7096(Top 62%)7096(Top 588%)
35K21.75 mi0.75 mi20553+1218063+588063+5817232(Top 65%)6417(Top 56%)6417(Top 532%)
23M23.00 mi1.25 mi20369+1847978+857978+8517448(Top 66%)6543(Top 57%)6543(Top 542%)
24M24.00 mi1.00 mi20253+1167919+597919+5916730(Top 63%)6224(Top 54%)6224(Top 516%)
40K24.85 mi0.85 mi20118+1357855+647855+6416224(Top 61%)5995(Top 52%)5995(Top 497%)
25.2M25.20 mi0.35 mi20050+687820+357820+3514940(Top 56%)5298(Top 46%)5298(Top 439%)
Finish26.22 mi1.02 mi19897+1537734+867734+8614620(Top 55%)5071(Top 44%)5071(Top 420%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

21305

Females

8401

F50-54

8401

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

21891

Females

8761

F50-54

8761

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

21305

Females

8401

F50-54

8401

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

20845

Females

8136

F50-54

8136

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

21205

Females

8353

F50-54

8353

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20309

Females

7870

F50-54

7870

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

19516

Females

7483

F50-54

7483

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

18711

Females

7143

F50-54

7143

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

18568

Females

7096

F50-54

7096

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

17232

Females

6417

F50-54

6417

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

17448

Females

6543

F50-54

6543

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

16730

Females

6224

F50-54

6224

24M→40K

24.0 - 24.9 mi

Top 61%
×1story
+6ft-20ft

Overall

16224

Females

5995

F50-54

5995

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

14940

Females

5298

F50-54

5298

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×2story building
+22ft-21ft

Overall

14620

Females

5071

F50-54

5071

Passing Analysis

Category:
Athletes Passed
2674
Passed By
372
Net Change
+2302
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22199
5K → 10K313189+124#22199#22075
10K → 15K33063+267#22075#21808
15K → 20K26530+235#21808#21573
20K → Half3919+20#21573#21553
Half → 25K23620+216#21553#21337
25K → 30K35119+332#21337#21005
30K → 20M19111+180#21005#20825
20M → 21M1587+151#20825#20674
21M → 35K1210+121#20674#20553
35K → 23M1906+184#20553#20369
23M → 24M1193+116#20369#20253
24M → 40K1372+135#20253#20118
40K → 25.2M680+68#20118#20050
25.2M → Finish1563+153#20050#19897
TOTALS2674372+2302
📊

Passing Visuals

Category:
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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