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BOSTON MARATHON 2024

Casey Shi

Bib: 13521•F

NY

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 25%
Gender (Female)
#0 / 10924
Top 10%
Division (F18-39)
#0 / 4660
Top 18%
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
7:34/mi
23:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:29/mi
46:44
↑ 79↓ 1380.4%
15K· 9.32 mi
7:27/mi
1:09:53
↑ 67↓ 78
20K· 12.43 mi
7:32/mi
1:33:16
↑ 106↓ 860.1%
Half· 13.11 mi
7:12/mi
1:38:11
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:56:15
↑ 66↓ 880.2%
30K· 18.64 mi
7:35/mi
2:19:48
↑ 181↓ 1480.2%
20M
7:54/mi
2:30:33
↑ 64↓ 500.2%
21M
7:54/mi
2:38:27
↑ 106↓ 241.6%
35K· 21.75 mi
7:18/mi
2:43:55
↑ 17↓ 861.7%
23M
7:45/mi
2:53:37
↑ 23↓ 630.6%
24M
7:25/mi
3:01:02
↓ 821.3%
40K· 24.85 mi
7:33/mi
3:07:29
↓ 200.3%
25.2M
8:16/mi
3:10:20
↑ 13↓ 160.2%
Finish· 26.22 mi
7:10/mi
3:17:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:11
Pace7:29 /mi
2nd Half
Distance13.11 mi
Time1:39:27
Pace7:35 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:4123:297:3423:29
7:34
-
10K
6.21 mi11:16:5646:447:3123:15
7:29
-0:05
15K
9.32 mi11:40:051:09:537:3023:09
7:27
-0:02
20K
12.43 mi12:03:281:33:167:3023:23
7:32
+0:05
Half
13.11 mi12:08:231:38:117:294:55
7:12
-0:20
25K
15.53 mi12:26:271:56:157:2918:04
7:27
+0:15
30K
18.64 mi12:50:002:19:487:3023:33
7:35
+0:08
20M
20.00 mi13:00:452:30:337:3210:45
7:54
+0:19
21M
21.00 mi13:08:392:38:277:337:54
7:54
0:00
35K
21.75 mi13:14:072:43:557:325:28
7:18
-0:36
23M
23.00 mi13:23:492:53:377:339:42
7:45
+0:27
24M
24.00 mi13:31:143:01:027:337:25
7:25
-0:20
40K
24.85 mi13:37:413:07:297:336:27
7:33
+0:08
25.2M
25.20 mi13:40:323:10:207:332:51
8:16
+0:43
Finish
26.22 mi13:47:503:17:387:337:18
7:10
-1:06

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

7:10 /mi

Average Pace

7:33 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:08

89% of race

Time at Steady Pace

21:30

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:32 /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 mi10:53:4123:297:3423:29
7:34
#11242
10K
6.21 mi11:16:5646:447:3123:15
7:29
#10656
15K
9.32 mi11:40:051:09:537:3023:09
7:27
#10156
20K
12.43 mi12:03:281:33:167:3023:23
7:32
#9662
Half
13.11 mi12:08:231:38:117:294:55
7:12
#9511
25K
15.53 mi12:26:271:56:157:2918:04
7:27
#8955
30K
18.64 mi12:50:002:19:487:3023:33
7:35
#8143
20M
20.00 mi13:00:452:30:337:3210:45
7:54
#7924
21M
21.00 mi13:08:392:38:277:337:54
7:54
#7543
35K
21.75 mi13:14:072:43:557:325:28
7:18
#7331
23M
23.00 mi13:23:492:53:377:339:42
7:45
#7027
24M
24.00 mi13:31:143:01:027:337:25
7:25
#6775
40K
24.85 mi13:37:413:07:297:336:27
7:33
#6556
25.2M
25.20 mi13:40:323:10:207:332:51
8:16
#6466
Finish
26.22 mi13:47:503:17:387:337:18
7:10
#6304
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi11242268926899290(Top 36%)1822(Top 17%)1822(Top 39%)
10K6.21 mi3.10 mi10656+5862411+2782411+27810144(Top 40%)2163(Top 20%)2163(Top 46%)
15K9.32 mi3.11 mi10156+5002170+2412170+2419290(Top 36%)1822(Top 17%)1822(Top 39%)
20K12.43 mi3.11 mi9662+4941972+1981972+1988568(Top 34%)1608(Top 15%)1608(Top 35%)
Half13.11 mi0.68 mi9511+1511906+661906+667075(Top 28%)1019(Top 9%)1019(Top 22%)
25K15.53 mi2.42 mi8955+5561688+2181688+2186702(Top 26%)1051(Top 10%)1051(Top 23%)
30K18.64 mi3.11 mi8143+8121447+2411447+2415527(Top 22%)820(Top 8%)820(Top 18%)
20M20.00 mi1.36 mi7924+2191407+401407+406243(Top 24%)1236(Top 11%)1236(Top 27%)
21M21.00 mi1.00 mi7543+3811293+1141293+1143833(Top 15%)506(Top 5%)506(Top 11%)
35K21.75 mi0.75 mi7331+2121232+611232+614225(Top 17%)604(Top 6%)604(Top 13%)
23M23.00 mi1.25 mi7027+3041165+671165+674581(Top 18%)831(Top 8%)831(Top 18%)
24M24.00 mi1.00 mi6775+2521117+481117+483850(Top 15%)630(Top 6%)630(Top 14%)
40K24.85 mi0.85 mi6556+2191086+311086+313699(Top 14%)674(Top 6%)674(Top 14%)
25.2M25.20 mi0.35 mi6466+901069+171069+173659(Top 14%)700(Top 6%)700(Top 15%)
Finish26.22 mi1.02 mi6304+1621048+211048+213876(Top 15%)749(Top 7%)749(Top 16%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9290

Females

1822

F18-39

1822

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

10144

Females

2163

F18-39

2163

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9290

Females

1822

F18-39

1822

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

8568

Females

1608

F18-39

1608

20K→Half

12.4 - 13.1 mi

Top 28%
×2story building
+19ft-37ft

Overall

7075

Females

1019

F18-39

1019

Half→25K

13.1 - 15.5 mi

Top 26%
×4story building
+66ft-88ft

Overall

6702

Females

1051

F18-39

1051

25K→30K

15.5 - 18.6 mi

Top 22%
×9story building
+181ft-148ft

Overall

5527

Females

820

F18-39

820

30K→20M

18.6 - 20.0 mi

Top 24%
×5story building
+64ft-50ft

Overall

6243

Females

1236

F18-39

1236

20M→21M

20.0 - 21.0 mi

Top 15%
×8story building
+106ft-24ft

Overall

3833

Females

506

F18-39

506

21M→35K

21.0 - 21.8 mi

Top 17%
×7story building
+17ft-86ft

Overall

4225

Females

604

F18-39

604

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

4581

Females

831

F18-39

831

23M→24M

23.0 - 24.0 mi

Top 15%
×6story building
+12ft-82ft

Overall

3850

Females

630

F18-39

630

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3699

Females

674

F18-39

674

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3659

Females

700

F18-39

700

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

3876

Females

749

F18-39

749

Passing Analysis

Category:
Athletes Passed
5136*
Passed By
198
Net Change
+4938
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11242
5K → 10K65670+586#11242#10656
10K → 15K53434+500#10656#10156
15K → 20K518*24+494#10156#9662
20K → Half1521+151#9662#9511
Half → 25K5626+556#9511#8955
25K → 30K8164+812#8955#8143
30K → 20M24324+219#8143#7924
20M → 21M3843+381#7924#7543
21M → 35K2153+212#7543#7331
35K → 23M3139+304#7331#7027
23M → 24M2542+252#7027#6775
24M → 40K2256+219#6775#6556
40K → 25.2M933+90#6556#6466
25.2M → Finish1719+162#6466#6304
TOTALS5136*198+4938

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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