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BOSTON MARATHON 2024

Liu Yanfeng

Bib: 15258•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 35%
Gender (Female)
#0 / 10924
Top 20%
Masters (Masters Women)
#0 / 6263
Top 9%
Division (F40-44)
#0 / 1613
Top 19%
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
7:29/mi
23:15
↑ 97↓ 3451.5%
10K· 6.21 mi
7:24/mi
46:15
↑ 79↓ 1380.4%
15K· 9.32 mi
7:26/mi
1:09:21
↑ 67↓ 78
20K· 12.43 mi
7:39/mi
1:33:08
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:38:20
↑ 19↓ 370.5%
25K· 15.53 mi
7:51/mi
1:57:23
↑ 66↓ 880.2%
30K· 18.64 mi
8:18/mi
2:23:11
↑ 181↓ 1480.2%
20M
8:36/mi
2:34:52
↑ 64↓ 500.2%
21M
9:35/mi
2:44:27
↑ 106↓ 241.6%
35K· 21.75 mi
7:56/mi
2:50:23
↑ 17↓ 861.7%
23M
8:12/mi
3:00:39
↑ 23↓ 630.6%
24M
8:48/mi
3:09:27
↓ 821.3%
40K· 24.85 mi
8:17/mi
3:16:32
↓ 200.3%
25.2M
9:25/mi
3:19:47
↑ 13↓ 160.2%
Finish· 26.22 mi
7:45/mi
3:27:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:20
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:49:21
Pace8:20 /mi
📊Positive Split: 11.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:1323:157:2923:15
7:29
-
10K
6.21 mi11:19:1346:157:2723:00
7:24
-0:05
15K
9.32 mi11:42:191:09:217:2623:06
7:26
+0:02
20K
12.43 mi12:06:061:33:087:3023:47
7:39
+0:13
Half
13.11 mi12:11:181:38:207:305:12
7:37
-0:02
25K
15.53 mi12:30:211:57:237:3319:03
7:51
+0:14
30K
18.64 mi12:56:092:23:117:4125:48
8:18
+0:27
20M
20.00 mi13:07:502:34:527:4511:41
8:36
+0:18
21M
21.00 mi13:17:252:44:277:509:35
9:35
+0:59
35K
21.75 mi13:23:212:50:237:505:56
7:56
-1:39
23M
23.00 mi13:33:373:00:397:5110:16
8:12
+0:16
24M
24.00 mi13:42:253:09:277:548:48
8:48
+0:36
40K
24.85 mi13:49:303:16:327:547:05
8:17
-0:31
25.2M
25.20 mi13:52:453:19:477:563:15
9:25
+1:08
Finish
26.22 mi14:00:393:27:417:567:54
7:45
-1:40

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

7:24 /mi

Average Pace

7:56 /mi

Slowest Pace

9:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:09:21

33% of race

Time at Steady Pace

1:12:08

35% of race

Time at Slower Pace

1:06:12

32% of race

Average Pace: 7:55 /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 mi10:56:1323:157:2923:15
7:29
#10626
10K
6.21 mi11:19:1346:157:2723:00
7:24
#9981
15K
9.32 mi11:42:191:09:217:2623:06
7:26
#9671
20K
12.43 mi12:06:061:33:087:3023:47
7:39
#9590
Half
13.11 mi12:11:181:38:207:305:12
7:37
#9599
25K
15.53 mi12:30:211:57:237:3319:03
7:51
#9480
30K
18.64 mi12:56:092:23:117:4125:48
8:18
#9406
20M
20.00 mi13:07:502:34:527:4511:41
8:36
#9389
21M
21.00 mi13:17:252:44:277:509:35
9:35
#9455
35K
21.75 mi13:23:212:50:237:505:56
7:56
#9320
23M
23.00 mi13:33:373:00:397:5110:16
8:12
#9065
24M
24.00 mi13:42:253:09:277:548:48
8:48
#9161
40K
24.85 mi13:49:303:16:327:547:05
8:17
#9044
25.2M
25.20 mi13:52:453:19:477:563:15
9:25
#9020
Finish
26.22 mi14:00:393:27:417:567:54
7:45
#8902
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi10626235723579173(Top 36%)1769(Top 16%)1769(Top 110%)
10K6.21 mi3.10 mi9981+6452039+3182039+3189460(Top 37%)1861(Top 17%)1861(Top 115%)
15K9.32 mi3.11 mi9671+3101944+951944+959173(Top 36%)1769(Top 16%)1769(Top 110%)
20K12.43 mi3.11 mi9590+81194419449448(Top 37%)2049(Top 19%)2049(Top 127%)
Half13.11 mi0.68 mi9599-91953-91953-910054(Top 39%)2326(Top 21%)2326(Top 144%)
25K15.53 mi2.42 mi9480+1191946+71946+79306(Top 36%)2151(Top 20%)2151(Top 133%)
30K18.64 mi3.11 mi9406+742016-702016-709601(Top 38%)2503(Top 23%)2503(Top 155%)
20M20.00 mi1.36 mi9389+172057-412057-419981(Top 39%)2933(Top 27%)2933(Top 182%)
21M21.00 mi1.00 mi9455-662163-1062163-10611229(Top 44%)3853(Top 35%)3853(Top 239%)
35K21.75 mi0.75 mi9320+1352135+282135+287400(Top 29%)1948(Top 18%)1948(Top 121%)
23M23.00 mi1.25 mi9065+2552064+712064+716825(Top 27%)1816(Top 17%)1816(Top 113%)
24M24.00 mi1.00 mi9161-962157-932157-9311116(Top 44%)3966(Top 36%)3966(Top 246%)
40K24.85 mi0.85 mi9044+1172149+82149+87263(Top 28%)2261(Top 21%)2261(Top 140%)
25.2M25.20 mi0.35 mi9020+242161-122161-128451(Top 33%)2859(Top 26%)2859(Top 177%)
Finish26.22 mi1.02 mi8902+1182143+182143+187089(Top 28%)2156(Top 20%)2156(Top 134%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9173

Females

1769

F40-44

1769

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

9460

Females

1861

F40-44

1861

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9173

Females

1769

F40-44

1769

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9448

Females

2049

F40-44

2049

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

10054

Females

2326

F40-44

2326

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

9306

Females

2151

F40-44

2151

25K→30K

15.5 - 18.6 mi

Top 38%
×9story building
+181ft-148ft

Overall

9601

Females

2503

F40-44

2503

30K→20M

18.6 - 20.0 mi

Top 39%
×5story building
+64ft-50ft

Overall

9981

Females

2933

F40-44

2933

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

11229

Females

3853

F40-44

3853

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7400

Females

1948

F40-44

1948

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

6825

Females

1816

F40-44

1816

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

11116

Females

3966

F40-44

3966

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7263

Females

2261

F40-44

2261

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8451

Females

2859

F40-44

2859

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7089

Females

2156

F40-44

2156

Passing Analysis

Category:
Athletes Passed
3021*
Passed By
1296
Net Change
+1724
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10626
5K → 10K704*59+645#10626#9981
10K → 15K38373+310#9981#9671
15K → 20K251170+81#9671#9590
20K → Half3443-9#9590#9599
Half → 25K263143+119#9599#9480
25K → 30K295221+74#9480#9406
30K → 20M148131+17#9406#9389
20M → 21M108174-66#9389#9455
21M → 35K14510+135#9455#9320
35K → 23M27722+255#9320#9065
23M → 24M60156-96#9065#9161
24M → 40K15336+117#9161#9044
40K → 25.2M5228+24#9044#9020
25.2M → Finish14830+118#9020#8902
TOTALS3021*1296+1724

* 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