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BOSTON MARATHON 2024

Xi Chen

Bib: 12454•F

MA

0:00
0:00
/ mi
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 44%
Division (F18-39)
#0 / 4660
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
7:58/mi
24:45
↑ 97↓ 3451.5%
10K· 6.21 mi
7:41/mi
48:37
↑ 79↓ 1380.4%
15K· 9.32 mi
7:59/mi
1:13:24
↑ 67↓ 78
20K· 12.43 mi
8:50/mi
1:40:50
↑ 106↓ 860.1%
Half· 13.11 mi
8:56/mi
1:46:55
↑ 19↓ 370.5%
25K· 15.53 mi
8:56/mi
2:08:34
↑ 66↓ 880.2%
30K· 18.64 mi
9:48/mi
2:39:01
↑ 181↓ 1480.2%
20M
8:32/mi
2:50:37
↑ 64↓ 500.2%
21M
8:56/mi
2:59:33
↑ 106↓ 241.6%
35K· 21.75 mi
8:27/mi
3:05:52
↑ 17↓ 861.7%
23M
8:38/mi
3:16:41
↑ 23↓ 630.6%
24M
10:06/mi
3:26:47
↓ 821.3%
40K· 24.85 mi
11:13/mi
3:36:22
↓ 200.3%
25.2M
10:35/mi
3:40:01
↑ 13↓ 160.2%
Finish· 26.22 mi
8:19/mi
3:48:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:55
Pace8:09 /mi
2nd Half
Distance13.11 mi
Time2:01:34
Pace9:16 /mi
📊Positive Split: 13.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:1724:457:5824:45
7:58
-
10K
6.21 mi11:40:0948:377:4923:52
7:41
-0:17
15K
9.32 mi12:04:561:13:247:5324:47
7:59
+0:18
20K
12.43 mi12:32:221:40:508:0727:26
8:50
+0:51
Half
13.11 mi12:38:271:46:558:096:05
8:56
+0:06
25K
15.53 mi13:00:062:08:348:1721:39
8:56
0:00
30K
18.64 mi13:30:332:39:018:3230:27
9:48
+0:52
20M
20.00 mi13:42:092:50:378:3211:36
8:32
-1:16
21M
21.00 mi13:51:052:59:338:338:56
8:56
+0:24
35K
21.75 mi13:57:243:05:528:336:19
8:27
-0:29
23M
23.00 mi14:08:133:16:418:3310:49
8:38
+0:11
24M
24.00 mi14:18:193:26:478:3710:06
10:06
+1:28
40K
24.85 mi14:27:543:36:228:429:35
11:13
+1:07
25.2M
25.20 mi14:31:333:40:018:443:39
10:35
-0:38
Finish
26.22 mi14:40:013:48:298:438:28
8:19
-2:16

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

7:41 /mi

Average Pace

8:43 /mi

Slowest Pace

11:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:52

36% of race

Time at Steady Pace

1:32:50

41% of race

Time at Slower Pace

53:47

24% of race

Average Pace: 8:43 /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 mi11:16:1724:457:5824:45
7:58
#14416
10K
6.21 mi11:40:0948:377:4923:52
7:41
#13060
15K
9.32 mi12:04:561:13:247:5324:47
7:59
#13111
20K
12.43 mi12:32:221:40:508:0727:26
8:50
#14156
Half
13.11 mi12:38:271:46:558:096:05
8:56
#14378
25K
15.53 mi13:00:062:08:348:1721:39
8:56
#14501
30K
18.64 mi13:30:332:39:018:3230:27
9:48
#14969
20M
20.00 mi13:42:092:50:378:3211:36
8:32
#14564
21M
21.00 mi13:51:052:59:338:338:56
8:56
#14136
35K
21.75 mi13:57:243:05:528:336:19
8:27
#13981
23M
23.00 mi14:08:133:16:418:3310:49
8:38
#13649
24M
24.00 mi14:18:193:26:478:3710:06
10:06
#13835
40K
24.85 mi14:27:543:36:228:429:35
11:13
#14141
25.2M
25.20 mi14:31:333:40:018:443:39
10:35
#14115
Finish
26.22 mi14:40:013:48:298:438:28
8:19
#13949
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 mi144164571457113310(Top 52%)3981(Top 36%)3981(Top 85%)
10K6.21 mi3.10 mi13060+13563774+7973774+79711746(Top 46%)3058(Top 28%)3058(Top 66%)
15K9.32 mi3.11 mi13111-513821-473821-4713310(Top 52%)3981(Top 36%)3981(Top 85%)
20K12.43 mi3.11 mi14156-10454454-6334454-63316556(Top 65%)5926(Top 54%)5926(Top 127%)
Half13.11 mi0.68 mi14378-2224603-1494603-14917943(Top 70%)6773(Top 62%)6773(Top 145%)
25K15.53 mi2.42 mi14501-1234704-1014704-10115188(Top 59%)5286(Top 48%)5286(Top 113%)
30K18.64 mi3.11 mi14969-4685065-3615065-36116641(Top 65%)6319(Top 58%)6319(Top 136%)
20M20.00 mi1.36 mi14564+4054866+1994866+1999667(Top 38%)2793(Top 26%)2793(Top 60%)
21M21.00 mi1.00 mi14136+4284676+1904676+1908311(Top 33%)2356(Top 22%)2356(Top 51%)
35K21.75 mi0.75 mi13981+1554619+574619+5710457(Top 41%)3482(Top 32%)3482(Top 75%)
23M23.00 mi1.25 mi13649+3324497+1224497+1229251(Top 36%)3016(Top 28%)3016(Top 65%)
24M24.00 mi1.00 mi13835-1864638-1414638-14116653(Top 65%)6761(Top 62%)6761(Top 145%)
40K24.85 mi0.85 mi14141-3064841-2034841-20318625(Top 73%)7812(Top 72%)7812(Top 168%)
25.2M25.20 mi0.35 mi14115+264843-24843-213133(Top 51%)5154(Top 47%)5154(Top 111%)
Finish26.22 mi1.02 mi13949+1664794+494794+4910432(Top 41%)3721(Top 34%)3721(Top 80%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

13310

Females

3981

F18-39

3981

5K→10K

3.1 - 6.2 mi

Top 46%
×5story building
+79ft-138ft

Overall

11746

Females

3058

F18-39

3058

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

13310

Females

3981

F18-39

3981

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

16556

Females

5926

F18-39

5926

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

17943

Females

6773

F18-39

6773

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

15188

Females

5286

F18-39

5286

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

16641

Females

6319

F18-39

6319

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

9667

Females

2793

F18-39

2793

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

8311

Females

2356

F18-39

2356

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

10457

Females

3482

F18-39

3482

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9251

Females

3016

F18-39

3016

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

16653

Females

6761

F18-39

6761

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

18625

Females

7812

F18-39

7812

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13133

Females

5154

F18-39

5154

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

10432

Females

3721

F18-39

3721

Passing Analysis

Category:
Athletes Passed
3627
Passed By
3160
Net Change
+467
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14416
5K → 10K137923+1356#14416#13060
10K → 15K201252-51#13060#13111
15K → 20K611106-1045#13111#14156
20K → Half12234-222#14156#14378
Half → 25K183306-123#14378#14501
25K → 30K128596-468#14501#14969
30K → 20M4116+405#14969#14564
20M → 21M4291+428#14564#14136
21M → 35K16712+155#14136#13981
35K → 23M3419+332#13981#13649
23M → 24M51237-186#13649#13835
24M → 40K28334-306#13835#14141
40K → 25.2M5731+26#14141#14115
25.2M → Finish17913+166#14115#13949
TOTALS36273160+467
📊

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