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BOSTON MARATHON 2024

Chunguang Li

Bib: 22541•F

MO

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Top 47%
Division (F60-64)
#0 / 549
Top 16%
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
8:42/mi
27:02
↑ 97↓ 3451.5%
10K· 6.21 mi
8:35/mi
53:43
↑ 79↓ 1380.4%
15K· 9.32 mi
8:48/mi
1:21:02
↑ 67↓ 78
20K· 12.43 mi
9:03/mi
1:49:08
↑ 106↓ 860.1%
Half· 13.11 mi
8:45/mi
1:55:06
↑ 19↓ 370.5%
25K· 15.53 mi
9:09/mi
2:17:16
↑ 66↓ 880.2%
30K· 18.64 mi
9:31/mi
2:46:50
↑ 181↓ 1480.2%
20M
9:39/mi
2:59:57
↑ 64↓ 500.2%
21M
10:33/mi
3:10:30
↑ 106↓ 241.6%
35K· 21.75 mi
9:09/mi
3:17:21
↑ 17↓ 861.7%
23M
9:26/mi
3:29:10
↑ 23↓ 630.6%
24M
9:10/mi
3:38:20
↓ 821.3%
40K· 24.85 mi
9:45/mi
3:46:40
↓ 200.3%
25.2M
10:47/mi
3:50:23
↑ 13↓ 160.2%
Finish· 26.22 mi
9:01/mi
3:59:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:06
Pace8:47 /mi
2nd Half
Distance13.11 mi
Time2:04:28
Pace9:30 /mi
📊Positive Split: 8.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:2027:028:4227:02
8:42
-
10K
6.21 mi11:51:0153:438:3926:41
8:35
-0:07
15K
9.32 mi12:18:201:21:028:4227:19
8:48
+0:13
20K
12.43 mi12:46:261:49:088:4728:06
9:03
+0:15
Half
13.11 mi12:52:241:55:068:475:58
8:45
-0:18
25K
15.53 mi13:14:342:17:168:5022:10
9:09
+0:24
30K
18.64 mi13:44:082:46:508:5729:34
9:31
+0:22
20M
20.00 mi13:57:152:59:579:0013:07
9:39
+0:08
21M
21.00 mi14:07:483:10:309:0410:33
10:33
+0:54
35K
21.75 mi14:14:393:17:219:046:51
9:09
-1:24
23M
23.00 mi14:26:283:29:109:0611:49
9:26
+0:17
24M
24.00 mi14:35:383:38:209:069:10
9:10
-0:16
40K
24.85 mi14:43:583:46:409:078:20
9:45
+0:35
25.2M
25.20 mi14:47:413:50:239:093:43
10:47
+1:02
Finish
26.22 mi14:56:523:59:349:099:11
9:01
-1:46

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

8:35 /mi

Average Pace

9:09 /mi

Slowest Pace

10:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:00

36% of race

Time at Steady Pace

1:27:17

36% of race

Time at Slower Pace

1:05:17

27% of race

Average Pace: 9:08 /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 mi11:24:2027:028:4227:02
8:42
#18834
10K
6.21 mi11:51:0153:438:3926:41
8:35
#18309
15K
9.32 mi12:18:201:21:028:4227:19
8:48
#18156
20K
12.43 mi12:46:261:49:088:4728:06
9:03
#17939
Half
13.11 mi12:52:241:55:068:475:58
8:45
#17880
25K
15.53 mi13:14:342:17:168:5022:10
9:09
#17540
30K
18.64 mi13:44:082:46:508:5729:34
9:31
#17123
20M
20.00 mi13:57:152:59:579:0013:07
9:39
#16985
21M
21.00 mi14:07:483:10:309:0410:33
10:33
#16873
35K
21.75 mi14:14:393:17:219:046:51
9:09
#16745
23M
23.00 mi14:26:283:29:109:0611:49
9:26
#16559
24M
24.00 mi14:35:383:38:209:069:10
9:10
#16369
40K
24.85 mi14:43:583:46:409:078:20
9:45
#16259
25.2M
25.20 mi14:47:413:50:239:093:43
10:47
#16222
Finish
26.22 mi14:56:523:59:349:099:11
9:01
#16164
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi188347249724917939(Top 70%)6680(Top 61%)6680(Top 1217%)
10K6.21 mi3.10 mi18309+5256923+3266923+32617787(Top 70%)6605(Top 60%)6605(Top 1203%)
15K9.32 mi3.11 mi18156+1536831+926831+9217939(Top 70%)6680(Top 61%)6680(Top 1217%)
20K12.43 mi3.11 mi17939+2176707+1246707+12417520(Top 69%)6440(Top 59%)6440(Top 1173%)
Half13.11 mi0.68 mi17880+596685+226685+2217088(Top 67%)6269(Top 57%)6269(Top 1142%)
25K15.53 mi2.42 mi17540+3406521+1646521+16416188(Top 63%)5832(Top 53%)5832(Top 1062%)
30K18.64 mi3.11 mi17123+4176326+1956326+19515526(Top 61%)5705(Top 52%)5705(Top 1039%)
20M20.00 mi1.36 mi16985+1386289+376289+3715176(Top 59%)5772(Top 53%)5772(Top 1051%)
21M21.00 mi1.00 mi16873+1126256+336256+3315026(Top 59%)5837(Top 53%)5837(Top 1063%)
35K21.75 mi0.75 mi16745+1286202+546202+5414103(Top 55%)5384(Top 49%)5384(Top 981%)
23M23.00 mi1.25 mi16559+1866115+876115+8713259(Top 52%)5039(Top 46%)5039(Top 918%)
24M24.00 mi1.00 mi16369+1906047+686047+6812977(Top 51%)4927(Top 45%)4927(Top 897%)
40K24.85 mi0.85 mi16259+1106019+286019+2814078(Top 55%)5574(Top 51%)5574(Top 1015%)
25.2M25.20 mi0.35 mi16222+376009+106009+1013809(Top 54%)5470(Top 50%)5470(Top 996%)
Finish26.22 mi1.02 mi16164+585999+105999+1014292(Top 56%)5624(Top 51%)5624(Top 1024%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

17939

Females

6680

F60-64

6680

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

17787

Females

6605

F60-64

6605

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

17939

Females

6680

F60-64

6680

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

17520

Females

6440

F60-64

6440

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

17088

Females

6269

F60-64

6269

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

16188

Females

5832

F60-64

5832

25K→30K

15.5 - 18.6 mi

Top 61%
×9story building
+181ft-148ft

Overall

15526

Females

5705

F60-64

5705

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

15176

Females

5772

F60-64

5772

20M→21M

20.0 - 21.0 mi

Top 59%
×8story building
+106ft-24ft

Overall

15026

Females

5837

F60-64

5837

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

14103

Females

5384

F60-64

5384

35K→23M

21.8 - 23.0 mi

Top 52%
×5story building
+23ft-63ft

Overall

13259

Females

5039

F60-64

5039

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

12977

Females

4927

F60-64

4927

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

14078

Females

5574

F60-64

5574

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

13809

Females

5470

F60-64

5470

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

14292

Females

5624

F60-64

5624

Passing Analysis

Category:
Athletes Passed
3413
Passed By
743
Net Change
+2670
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18834
5K → 10K627102+525#18834#18309
10K → 15K302149+153#18309#18156
15K → 20K351134+217#18156#17939
20K → Half7213+59#17939#17880
Half → 25K39151+340#17880#17540
25K → 30K49275+417#17540#17123
30K → 20M18648+138#17123#16985
20M → 21M15038+112#16985#16873
21M → 35K14517+128#16873#16745
35K → 23M19913+186#16745#16559
23M → 24M20313+190#16559#16369
24M → 40K13929+110#16369#16259
40K → 25.2M5316+37#16259#16222
25.2M → Finish10345+58#16222#16164
TOTALS3413743+2670
📊

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