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BOSTON MARATHON 2024

Yunxia Cai

Bib: 21190•F

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 45%
Masters (Masters Women)
#0 / 6263
Top 35%
Division (F50-54)
#0 / 1187
Top 28%
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
8:02/mi
24:56
↑ 97↓ 3451.5%
10K· 6.21 mi
7:56/mi
49:36
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:14:29
↑ 67↓ 78
20K· 12.43 mi
8:17/mi
1:40:13
↑ 106↓ 860.1%
Half· 13.11 mi
8:04/mi
1:45:43
↑ 19↓ 370.5%
25K· 15.53 mi
8:41/mi
2:06:45
↑ 66↓ 880.2%
30K· 18.64 mi
9:15/mi
2:35:30
↑ 181↓ 1480.2%
20M
9:13/mi
2:48:02
↑ 64↓ 500.2%
21M
10:28/mi
2:58:30
↑ 106↓ 241.6%
35K· 21.75 mi
9:35/mi
3:05:40
↑ 17↓ 861.7%
23M
9:54/mi
3:18:04
↑ 23↓ 630.6%
24M
10:15/mi
3:28:19
↓ 821.3%
40K· 24.85 mi
9:49/mi
3:36:43
↓ 200.3%
25.2M
10:35/mi
3:40:22
↑ 13↓ 160.2%
Finish· 26.22 mi
9:13/mi
3:49:46
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:43
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time2:04:03
Pace9:28 /mi
📊Positive Split: 17.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:5924:568:0224:56
8:02
-
10K
6.21 mi11:46:3949:367:5924:40
7:56
-0:06
15K
9.32 mi12:11:321:14:297:5924:53
8:01
+0:05
20K
12.43 mi12:37:161:40:138:0425:44
8:17
+0:16
Half
13.11 mi12:42:461:45:438:045:30
8:04
-0:13
25K
15.53 mi13:03:482:06:458:1021:02
8:41
+0:37
30K
18.64 mi13:32:332:35:308:2128:45
9:15
+0:34
20M
20.00 mi13:45:052:48:028:2412:32
9:13
-0:02
21M
21.00 mi13:55:332:58:308:3010:28
10:28
+1:15
35K
21.75 mi14:02:433:05:408:327:10
9:35
-0:53
23M
23.00 mi14:15:073:18:048:3712:24
9:54
+0:19
24M
24.00 mi14:25:223:28:198:4110:15
10:15
+0:21
40K
24.85 mi14:33:463:36:438:438:24
9:49
-0:26
25.2M
25.20 mi14:37:253:40:228:453:39
10:35
+0:46
Finish
26.22 mi14:46:493:49:468:469:24
9:13
-1:22

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

7:56 /mi

Average Pace

8:46 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:45

55% of race

Time at Steady Pace

57:51

25% of race

Time at Slower Pace

45:10

20% of race

Average Pace: 8:46 /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 mi11:21:5924:568:0224:56
8:02
#14840
10K
6.21 mi11:46:3949:367:5924:40
7:56
#14279
15K
9.32 mi12:11:321:14:297:5924:53
8:01
#14012
20K
12.43 mi12:37:161:40:138:0425:44
8:17
#13848
Half
13.11 mi12:42:461:45:438:045:30
8:04
#13792
25K
15.53 mi13:03:482:06:458:1021:02
8:41
#13792
30K
18.64 mi13:32:332:35:308:2128:45
9:15
#13867
20M
20.00 mi13:45:052:48:028:2412:32
9:13
#13782
21M
21.00 mi13:55:332:58:308:3010:28
10:28
#13862
35K
21.75 mi14:02:433:05:408:327:10
9:35
#13929
23M
23.00 mi14:15:073:18:048:3712:24
9:54
#14023
24M
24.00 mi14:25:223:28:198:4110:15
10:15
#14220
40K
24.85 mi14:33:463:36:438:438:24
9:49
#14230
25.2M
25.20 mi14:37:253:40:228:453:39
10:35
#14196
Finish
26.22 mi14:46:493:49:468:469:24
9:13
#14215
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi148404846484613525(Top 53%)4096(Top 37%)4096(Top 345%)
10K6.21 mi3.10 mi14279+5614501+3454501+34513782(Top 54%)4221(Top 39%)4221(Top 356%)
15K9.32 mi3.11 mi14012+2674345+1564345+15613525(Top 53%)4096(Top 37%)4096(Top 345%)
20K12.43 mi3.11 mi13848+1644271+744271+7413626(Top 53%)4200(Top 38%)4200(Top 354%)
Half13.11 mi0.68 mi13792+564234+374234+3713228(Top 52%)4042(Top 37%)4042(Top 341%)
25K15.53 mi2.42 mi137924275-414275-4113980(Top 55%)4607(Top 42%)4607(Top 388%)
30K18.64 mi3.11 mi13867-754401-1264401-12614425(Top 56%)5107(Top 47%)5107(Top 430%)
20M20.00 mi1.36 mi13782+854414-134414-1313263(Top 52%)4718(Top 43%)4718(Top 397%)
21M21.00 mi1.00 mi13862-804528-1144528-11414725(Top 58%)5687(Top 52%)5687(Top 479%)
35K21.75 mi0.75 mi13929-674590-624590-6215784(Top 62%)6230(Top 57%)6230(Top 525%)
23M23.00 mi1.25 mi14023-944696-1064696-10615148(Top 59%)5988(Top 55%)5988(Top 504%)
24M24.00 mi1.00 mi14220-1974855-1594855-15917130(Top 67%)7017(Top 64%)7017(Top 591%)
40K24.85 mi0.85 mi14230-104895-404895-4014371(Top 56%)5706(Top 52%)5706(Top 481%)
25.2M25.20 mi0.35 mi14196+344893+24893+213135(Top 51%)5156(Top 47%)5156(Top 434%)
Finish26.22 mi1.02 mi14215-194935-424935-4215263(Top 60%)6124(Top 56%)6124(Top 516%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

13525

Females

4096

F50-54

4096

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

13782

Females

4221

F50-54

4221

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

13525

Females

4096

F50-54

4096

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

13626

Females

4200

F50-54

4200

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13228

Females

4042

F50-54

4042

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

13980

Females

4607

F50-54

4607

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14425

Females

5107

F50-54

5107

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

13263

Females

4718

F50-54

4718

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

14725

Females

5687

F50-54

5687

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

15784

Females

6230

F50-54

6230

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

15148

Females

5988

F50-54

5988

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

17130

Females

7017

F50-54

7017

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

14371

Females

5706

F50-54

5706

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13135

Females

5156

F50-54

5156

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

15263

Females

6124

F50-54

6124

Passing Analysis

Category:
Athletes Passed
2610
Passed By
1985
Net Change
+625
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14840
5K → 10K64685+561#14840#14279
10K → 15K36497+267#14279#14012
15K → 20K328164+164#14012#13848
20K → Half6913+56#13848#13792
Half → 25K2172170#13792#13792
25K → 30K262337-75#13792#13867
30K → 20M17489+85#13867#13782
20M → 21M119199-80#13782#13862
21M → 35K72139-67#13862#13929
35K → 23M90184-94#13929#14023
23M → 24M62259-197#14023#14220
24M → 40K7282-10#14220#14230
40K → 25.2M5622+34#14230#14196
25.2M → Finish7998-19#14196#14215
TOTALS26101985+625
📊

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