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BOSTON MARATHON 2024

Tsai Chiu Ling

Bib: 21566•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F50-54)
#0 / 1187
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
10:11/mi
31:37
↑ 97↓ 3451.5%
10K· 6.21 mi
9:50/mi
1:02:09
↑ 79↓ 1380.4%
15K· 9.32 mi
10:27/mi
1:34:38
↑ 67↓ 78
20K· 12.43 mi
11:51/mi
2:11:26
↑ 106↓ 860.1%
Half· 13.11 mi
12:00/mi
2:19:37
↑ 19↓ 370.5%
25K· 15.53 mi
12:27/mi
2:49:49
↑ 66↓ 880.2%
30K· 18.64 mi
12:45/mi
3:29:26
↑ 181↓ 1480.2%
20M
14:24/mi
3:49:00
↑ 64↓ 500.2%
21M
15:02/mi
4:04:02
↑ 106↓ 241.6%
35K· 21.75 mi
13:18/mi
4:13:59
↑ 17↓ 861.7%
23M
12:57/mi
4:30:12
↑ 23↓ 630.6%
24M
12:09/mi
4:42:21
↓ 821.3%
40K· 24.85 mi
12:31/mi
4:53:03
↓ 200.3%
25.2M
15:02/mi
4:58:14
↑ 13↓ 160.2%
Finish· 26.22 mi
14:18/mi
5:12:48
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:19:37
Pace10:39 /mi
2nd Half
Distance13.11 mi
Time2:53:11
Pace13:13 /mi
📊Positive Split: 24.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:4831:3710:1131:37
10:11
-
10K
6.21 mi12:18:201:02:0910:0030:32
9:50
-0:21
15K
9.32 mi12:50:491:34:3810:0932:29
10:27
+0:37
20K
12.43 mi13:27:372:11:2610:3536:48
11:51
+1:24
Half
13.11 mi13:35:482:19:3710:398:11
12:00
+0:09
25K
15.53 mi14:06:002:49:4910:5630:12
12:27
+0:27
30K
18.64 mi14:45:373:29:2611:1439:37
12:45
+0:18
20M
20.00 mi15:05:113:49:0011:2719:34
14:24
+1:39
21M
21.00 mi15:20:134:04:0211:3715:02
15:02
+0:38
35K
21.75 mi15:30:104:13:5911:419:57
13:18
-1:44
23M
23.00 mi15:46:234:30:1211:4516:13
12:57
-0:21
24M
24.00 mi15:58:324:42:2111:4612:09
12:09
-0:48
40K
24.85 mi16:09:144:53:0311:4710:42
12:31
+0:22
25.2M
25.20 mi16:14:254:58:1411:505:11
15:02
+2:31
Finish
26.22 mi16:28:595:12:4811:5614:34
14:18
-0:44

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

9:50 /mi

Average Pace

11:56 /mi

Slowest Pace

15:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:34:38

30% of race

Time at Steady Pace

2:43:49

52% of race

Time at Slower Pace

54:21

17% of race

Average Pace: 11:56 /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 mi11:47:4831:3710:1131:37
10:11
#23389
10K
6.21 mi12:18:201:02:0910:0030:32
9:50
#22793
15K
9.32 mi12:50:491:34:3810:0932:29
10:27
#22824
20K
12.43 mi13:27:372:11:2610:3536:48
11:51
#23174
Half
13.11 mi13:35:482:19:3710:398:11
12:00
#23314
25K
15.53 mi14:06:002:49:4910:5630:12
12:27
#23439
30K
18.64 mi14:45:373:29:2611:1439:37
12:45
#23386
20M
20.00 mi15:05:113:49:0011:2719:34
14:24
#23463
21M
21.00 mi15:20:134:04:0211:3715:02
15:02
#23470
35K
21.75 mi15:30:104:13:5911:419:57
13:18
#23474
23M
23.00 mi15:46:234:30:1211:4516:13
12:57
#23433
24M
24.00 mi15:58:324:42:2111:4612:09
12:09
#23377
40K
24.85 mi16:09:144:53:0311:4710:42
12:31
#23347
25.2M
25.20 mi16:14:254:58:1411:505:11
15:02
#23356
Finish
26.22 mi16:28:595:12:4811:5614:34
14:18
#23481
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi233899596959622853(Top 89%)9347(Top 86%)9347(Top 787%)
10K6.21 mi3.10 mi22793+5969307+2899307+28922168(Top 87%)9005(Top 82%)9005(Top 759%)
15K9.32 mi3.11 mi22824-319316-99316-922853(Top 89%)9347(Top 86%)9347(Top 787%)
20K12.43 mi3.11 mi23174-3509521-2059521-20523807(Top 93%)9900(Top 91%)9900(Top 834%)
Half13.11 mi0.68 mi23314-1409599-789599-7824580(Top 96%)10377(Top 95%)10377(Top 874%)
25K15.53 mi2.42 mi23439-1259690-919690-9123688(Top 93%)9906(Top 91%)9906(Top 835%)
30K18.64 mi3.11 mi23386+539701-119701-1122977(Top 90%)9641(Top 88%)9641(Top 812%)
20M20.00 mi1.36 mi23463-779749-489749-4824302(Top 95%)10374(Top 95%)10374(Top 874%)
21M21.00 mi1.00 mi23470-79767-189767-1823599(Top 92%)10081(Top 92%)10081(Top 849%)
35K21.75 mi0.75 mi23474-49776-99776-923610(Top 92%)10113(Top 93%)10113(Top 852%)
23M23.00 mi1.25 mi23433+419778-29778-222466(Top 88%)9590(Top 88%)9590(Top 808%)
24M24.00 mi1.00 mi23377+569763+159763+1521763(Top 85%)9321(Top 85%)9321(Top 785%)
40K24.85 mi0.85 mi23347+309752+119752+1121436(Top 84%)9202(Top 84%)9202(Top 775%)
25.2M25.20 mi0.35 mi23356-99759-79759-723074(Top 90%)9963(Top 91%)9963(Top 839%)
Finish26.22 mi1.02 mi23481-1259840-819840-8125016(Top 98%)10785(Top 99%)10785(Top 909%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

22853

Females

9347

F50-54

9347

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

22168

Females

9005

F50-54

9005

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

22853

Females

9347

F50-54

9347

15K→20K

9.3 - 12.4 mi

Top 93%
×5story building
+106ft-86ft

Overall

23807

Females

9900

F50-54

9900

20K→Half

12.4 - 13.1 mi

Top 96%
×2story building
+19ft-37ft

Overall

24580

Females

10377

F50-54

10377

Half→25K

13.1 - 15.5 mi

Top 93%
×4story building
+66ft-88ft

Overall

23688

Females

9906

F50-54

9906

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

22977

Females

9641

F50-54

9641

30K→20M

18.6 - 20.0 mi

Top 95%
×5story building
+64ft-50ft

Overall

24302

Females

10374

F50-54

10374

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

23599

Females

10081

F50-54

10081

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

23610

Females

10113

F50-54

10113

35K→23M

21.8 - 23.0 mi

Top 88%
×5story building
+23ft-63ft

Overall

22466

Females

9590

F50-54

9590

23M→24M

23.0 - 24.0 mi

Top 85%
×6story building
+12ft-82ft

Overall

21763

Females

9321

F50-54

9321

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

21436

Females

9202

F50-54

9202

40K→25.2M

24.9 - 25.2 mi

Top 90%
×1story
+13ft-16ft

Overall

23074

Females

9963

F50-54

9963

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2story building
+22ft-21ft

Overall

25016

Females

10785

F50-54

10785

Passing Analysis

Category:
Athletes Passed
1417
Passed By
1509
Net Change
-92
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23389
5K → 10K62125+596#23389#22793
10K → 15K146177-31#22793#22824
15K → 20K67417-350#22824#23174
20K → Half5145-140#23174#23314
Half → 25K67192-125#23314#23439
25K → 30K159106+53#23439#23386
30K → 20M45122-77#23386#23463
20M → 21M5259-7#23463#23470
21M → 35K3842-4#23470#23474
35K → 23M7332+41#23474#23433
23M → 24M7418+56#23433#23377
24M → 40K4313+30#23377#23347
40K → 25.2M1019-9#23347#23356
25.2M → Finish17142-125#23356#23481
TOTALS14171509-92
📊

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