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BOSTON MARATHON 2024

Yu Chen Tsai

Bib: 19857•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F45-49)
#0 / 1753
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
8:16/mi
25:42
↑ 97↓ 3451.5%
10K· 6.21 mi
8:45/mi
52:52
↑ 79↓ 1380.4%
15K· 9.32 mi
9:21/mi
1:21:54
↑ 67↓ 78
20K· 12.43 mi
9:50/mi
1:52:26
↑ 106↓ 860.1%
Half· 13.11 mi
9:20/mi
1:58:48
↑ 19↓ 370.5%
25K· 15.53 mi
10:49/mi
2:25:02
↑ 66↓ 880.2%
30K· 18.64 mi
11:48/mi
3:01:41
↑ 181↓ 1480.2%
20M
12:24/mi
3:18:32
↑ 64↓ 500.2%
21M
14:13/mi
3:32:45
↑ 106↓ 241.6%
35K· 21.75 mi
11:40/mi
3:41:29
↑ 17↓ 861.7%
23M
11:20/mi
3:55:40
↑ 23↓ 630.6%
24M
10:29/mi
4:06:09
↓ 821.3%
40K· 24.85 mi
10:47/mi
4:15:22
↓ 200.3%
25.2M
13:00/mi
4:19:51
↑ 13↓ 160.2%
Finish· 26.22 mi
9:34/mi
4:29:36
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:48
Pace9:04 /mi
2nd Half
Distance13.11 mi
Time2:30:48
Pace11:30 /mi
📊Positive Split: 26.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0025:428:1625:42
8:16
-
10K
6.21 mi11:45:1052:528:3027:10
8:45
+0:29
15K
9.32 mi12:14:121:21:548:4729:02
9:21
+0:36
20K
12.43 mi12:44:441:52:269:0330:32
9:50
+0:29
Half
13.11 mi12:51:061:58:489:046:22
9:20
-0:30
25K
15.53 mi13:17:202:25:029:2026:14
10:49
+1:29
30K
18.64 mi13:53:593:01:419:4536:39
11:48
+0:59
20M
20.00 mi14:10:503:18:329:5616:51
12:24
+0:36
21M
21.00 mi14:25:033:32:4510:0814:13
14:13
+1:49
35K
21.75 mi14:33:473:41:2910:118:44
11:40
-2:33
23M
23.00 mi14:47:583:55:4010:1514:11
11:20
-0:20
24M
24.00 mi14:58:274:06:0910:1510:29
10:29
-0:51
40K
24.85 mi15:07:404:15:2210:169:13
10:47
+0:18
25.2M
25.20 mi15:12:094:19:5110:194:29
13:00
+2:13
Finish
26.22 mi15:21:544:29:3610:179:45
9:34
-3:26

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

8:16 /mi

Average Pace

10:17 /mi

Slowest Pace

14:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:33

48% of race

Time at Steady Pace

1:00:07

22% of race

Time at Slower Pace

1:20:56

30% of race

Average Pace: 10:17 /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 mi11:18:0025:428:1625:42
8:16
#16480
10K
6.21 mi11:45:1052:528:3027:10
8:45
#17568
15K
9.32 mi12:14:121:21:548:4729:02
9:21
#18647
20K
12.43 mi12:44:441:52:269:0330:32
9:50
#19176
Half
13.11 mi12:51:061:58:489:046:22
9:20
#19189
25K
15.53 mi13:17:202:25:029:2026:14
10:49
#19645
30K
18.64 mi13:53:593:01:419:4536:39
11:48
#20086
20M
20.00 mi14:10:503:18:329:5616:51
12:24
#20284
21M
21.00 mi14:25:033:32:4510:0814:13
14:13
#20456
35K
21.75 mi14:33:473:41:2910:118:44
11:40
#20491
23M
23.00 mi14:47:583:55:4010:1514:11
11:20
#20410
24M
24.00 mi14:58:274:06:0910:1510:29
10:29
#20306
40K
24.85 mi15:07:404:15:2210:169:13
10:47
#20172
25.2M
25.20 mi15:12:094:19:5110:194:29
13:00
#20164
Finish
26.22 mi15:21:544:29:3610:179:45
9:34
#20066
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi164805854585420176(Top 79%)7875(Top 72%)7875(Top 449%)
10K6.21 mi3.10 mi17568-10886488-6346488-63418603(Top 73%)7085(Top 65%)7085(Top 404%)
15K9.32 mi3.11 mi18647-10797106-6187106-61820176(Top 79%)7875(Top 72%)7875(Top 449%)
20K12.43 mi3.11 mi19176-5297396-2907396-29020128(Top 79%)7885(Top 72%)7885(Top 450%)
Half13.11 mi0.68 mi19189-137403-77403-719559(Top 77%)7640(Top 70%)7640(Top 436%)
25K15.53 mi2.42 mi19645-4567658-2557658-25521130(Top 83%)8545(Top 78%)8545(Top 487%)
30K18.64 mi3.11 mi20086-4417944-2867944-28621564(Top 84%)8931(Top 82%)8931(Top 509%)
20M20.00 mi1.36 mi20284-1988076-1328076-13222020(Top 86%)9264(Top 85%)9264(Top 528%)
21M21.00 mi1.00 mi20456-1728190-1148190-11422615(Top 89%)9602(Top 88%)9602(Top 548%)
35K21.75 mi0.75 mi20491-358229-398229-3921221(Top 83%)8955(Top 82%)8955(Top 511%)
23M23.00 mi1.25 mi20410+818213+168213+1619252(Top 75%)8017(Top 73%)8017(Top 457%)
24M24.00 mi1.00 mi20306+1048178+358178+3517814(Top 70%)7378(Top 68%)7378(Top 421%)
40K24.85 mi0.85 mi20172+1348125+538125+5317524(Top 69%)7285(Top 67%)7285(Top 416%)
25.2M25.20 mi0.35 mi20164+88129-48129-419719(Top 77%)8374(Top 77%)8374(Top 478%)
Finish26.22 mi1.02 mi20066+988086+438086+4316831(Top 66%)6933(Top 63%)6933(Top 395%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

20176

Females

7875

F45-49

7875

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

18603

Females

7085

F45-49

7085

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

20176

Females

7875

F45-49

7875

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

20128

Females

7885

F45-49

7885

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

19559

Females

7640

F45-49

7640

Half→25K

13.1 - 15.5 mi

Top 83%
×4story building
+66ft-88ft

Overall

21130

Females

8545

F45-49

8545

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

21564

Females

8931

F45-49

8931

30K→20M

18.6 - 20.0 mi

Top 86%
×5story building
+64ft-50ft

Overall

22020

Females

9264

F45-49

9264

20M→21M

20.0 - 21.0 mi

Top 89%
×8story building
+106ft-24ft

Overall

22615

Females

9602

F45-49

9602

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

21221

Females

8955

F45-49

8955

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

19252

Females

8017

F45-49

8017

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

17814

Females

7378

F45-49

7378

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

17524

Females

7285

F45-49

7285

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

19719

Females

8374

F45-49

8374

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

16831

Females

6933

F45-49

6933

Passing Analysis

Category:
Athletes Passed
996
Passed By
4582
Net Change
-3586
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16480
5K → 10K601148-1088#16480#17568
10K → 15K371116-1079#17568#18647
15K → 20K120649-529#18647#19176
20K → Half3245-13#19176#19189
Half → 25K71527-456#19189#19645
25K → 30K56497-441#19645#20086
30K → 20M34232-198#20086#20284
20M → 21M26198-172#20284#20456
21M → 35K3671-35#20456#20491
35K → 23M12039+81#20491#20410
23M → 24M12319+104#20410#20306
24M → 40K1439+134#20306#20172
40K → 25.2M3123+8#20172#20164
25.2M → Finish1079+98#20164#20066
TOTALS9964582-3586
📊

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