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BOSTON MARATHON 2024

Siying Li

Bib: 12780•F

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 40%
Gender (Female)
#0 / 10924
Top 26%
Division (F18-39)
#0 / 4660
Top 42%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:16
Rank: #13177
Start → 5K
24:16 | 7:49/mi
10K· 6.21 mi
48:26
Rank: #12843 (+334)
5K → 10K
24:10 | 7:47/mi
15K· 9.32 mi
1:12:42
Rank: #12515 (+328)
10K → 15K
24:16 | 7:49/mi
20K· 12.43 mi
1:38:57
Rank: #13109 (-594)
15K → 20K
26:15 | 8:27/mi
Half· 13.11 mi
1:44:13
Rank: #12956 (+153)
20K → Half
5:16 | 7:43/mi
25K· 15.53 mi
2:04:08
Rank: #12619 (+337)
Half → 25K
19:55 | 8:13/mi
30K· 18.64 mi
2:29:52
Rank: #11931 (+688)
25K → 30K
25:44 | 8:17/mi
20M
2:41:11
Rank: #11599 (+332)
30K → 20M
11:19 | 8:20/mi
21M
2:50:12
Rank: #11362 (+237)
20M → 21M
9:01 | 9:01/mi
35K· 21.75 mi
2:56:16
Rank: #11209 (+153)
21M → 35K
6:04 | 8:07/mi
23M
3:06:55
Rank: #10979 (+230)
35K → 23M
10:39 | 8:30/mi
24M
3:15:05
Rank: #10773 (+206)
23M → 24M
8:10 | 8:10/mi
40K· 24.85 mi
3:22:09
Rank: #10573 (+200)
24M → 40K
7:04 | 8:16/mi
25.2M
3:25:13
Rank: #10475 (+98)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:33:02
Rank: #10282 (+193)
25.2M → Finish
7:49 | 7:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:13
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:48:49
Pace8:18 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:4624:167:4924:16
7:49
-
10K
6.21 mi11:18:5648:267:4824:10
7:47
-0:02
15K
9.32 mi11:43:121:12:427:4824:16
7:49
+0:02
20K
12.43 mi12:09:271:38:577:5826:15
8:27
+0:38
Half
13.11 mi12:14:431:44:137:575:16
7:43
-0:44
25K
15.53 mi12:34:382:04:087:5919:55
8:13
+0:30
30K
18.64 mi13:00:222:29:528:0225:44
8:17
+0:04
20M
20.00 mi13:11:412:41:118:0411:19
8:20
+0:03
21M
21.00 mi13:20:422:50:128:069:01
9:01
+0:41
35K
21.75 mi13:26:462:56:168:066:04
8:07
-0:54
23M
23.00 mi13:37:253:06:558:0810:39
8:30
+0:23
24M
24.00 mi13:45:353:15:058:088:10
8:10
-0:20
40K
24.85 mi13:52:393:22:098:087:04
8:16
+0:06
25.2M
25.20 mi13:55:433:25:138:093:04
8:54
+0:38
Finish
26.22 mi14:03:323:33:028:087:49
7:40
-1:14

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

7:40 /mi

Average Pace

8:08 /mi

Slowest Pace

9:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:03

77% of race

Time at Steady Pace

48:59

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:07 /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 mi10:54:4624:167:4924:16
7:49
#13177
10K
6.21 mi11:18:5648:267:4824:10
7:47
#12843
15K
9.32 mi11:43:121:12:427:4824:16
7:49
#12515
20K
12.43 mi12:09:271:38:577:5826:15
8:27
#13109
Half
13.11 mi12:14:431:44:137:575:16
7:43
#12956
25K
15.53 mi12:34:382:04:087:5919:55
8:13
#12619
30K
18.64 mi13:00:222:29:528:0225:44
8:17
#11931
20M
20.00 mi13:11:412:41:118:0411:19
8:20
#11599
21M
21.00 mi13:20:422:50:128:069:01
9:01
#11362
35K
21.75 mi13:26:462:56:168:066:04
8:07
#11209
23M
23.00 mi13:37:253:06:558:0810:39
8:30
#10979
24M
24.00 mi13:45:353:15:058:088:10
8:10
#10773
40K
24.85 mi13:52:393:22:098:087:04
8:16
#10573
25.2M
25.20 mi13:55:433:25:138:093:04
8:54
#10475
Finish
26.22 mi14:03:323:33:028:087:49
7:40
#10282
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi131773821382112028(Top 47%)3257(Top 30%)3257(Top 70%)
10K6.21 mi3.10 mi12843+3343646+1753646+17512487(Top 49%)3466(Top 32%)3466(Top 74%)
15K9.32 mi3.11 mi12515+3283468+1783468+17812028(Top 47%)3257(Top 30%)3257(Top 70%)
20K12.43 mi3.11 mi13109-5943841-3733841-37314531(Top 57%)4733(Top 43%)4733(Top 102%)
Half13.11 mi0.68 mi12956+1533760+813760+8110802(Top 42%)2699(Top 25%)2699(Top 58%)
25K15.53 mi2.42 mi12619+3373599+1613599+16111465(Top 45%)3216(Top 29%)3216(Top 69%)
30K18.64 mi3.11 mi11931+6883311+2883311+2889477(Top 37%)2449(Top 22%)2449(Top 53%)
20M20.00 mi1.36 mi11599+3323186+1253186+1258566(Top 34%)2269(Top 21%)2269(Top 49%)
21M21.00 mi1.00 mi11362+2373123+633123+638700(Top 34%)2538(Top 23%)2538(Top 54%)
35K21.75 mi0.75 mi11209+1533079+443079+448503(Top 33%)2469(Top 23%)2469(Top 53%)
23M23.00 mi1.25 mi10979+2303020+593020+598533(Top 33%)2638(Top 24%)2638(Top 57%)
24M24.00 mi1.00 mi10773+2062962+582962+587585(Top 30%)2288(Top 21%)2288(Top 49%)
40K24.85 mi0.85 mi10573+2002913+492913+497192(Top 28%)2222(Top 20%)2222(Top 48%)
25.2M25.20 mi0.35 mi10475+982880+332880+336149(Top 24%)1805(Top 17%)1805(Top 39%)
Finish26.22 mi1.02 mi10282+1932816+642816+646594(Top 26%)1938(Top 18%)1938(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21stories
+97ft-345ft

Overall

12028

Females

3257

F18-39

3257

5K→10K

3.1 - 6.2 mi

Top 49%
×5stories
+79ft-138ft

Overall

12487

Females

3466

F18-39

3466

10K→15K

6.2 - 9.3 mi

Top 47%
×3stories
+67ft-78ft

Overall

12028

Females

3257

F18-39

3257

15K→20K

9.3 - 12.4 mi

Top 57%
×5stories
+106ft-86ft

Overall

14531

Females

4733

F18-39

4733

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

10802

Females

2699

F18-39

2699

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

11465

Females

3216

F18-39

3216

25K→30K

15.5 - 18.6 mi

Top 37%
×9stories
+181ft-148ft

Overall

9477

Females

2449

F18-39

2449

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

8566

Females

2269

F18-39

2269

20M→21M

20.0 - 21.0 mi

Top 34%
×8stories
+106ft-24ft

Overall

8700

Females

2538

F18-39

2538

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

8503

Females

2469

F18-39

2469

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

8533

Females

2638

F18-39

2638

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

7585

Females

2288

F18-39

2288

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7192

Females

2222

F18-39

2222

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6149

Females

1805

F18-39

1805

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

6594

Females

1938

F18-39

1938

Passing Analysis

Category:
Athletes Passed
4059*
Passed By
1164
Net Change
+2895
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13177
5K → 10K484150+334#13177#12843
10K → 15K40779+328#12843#12515
15K → 20K119713-594#12515#13109
20K → Half1563+153#13109#12956
Half → 25K41174+337#12956#12619
25K → 30K72234+688#12619#11931
30K → 20M3386+332#11931#11599
20M → 21M27033+237#11599#11362
21M → 35K1618+153#11362#11209
35K → 23M26838+230#11209#10979
23M → 24M2137+206#10979#10773
24M → 40K212*12+200#10773#10573
40K → 25.2M991+98#10573#10475
25.2M → Finish1996+193#10475#10282
TOTALS4059*1164+2895

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

📊

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