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BOSTON MARATHON 2024

Chi Un Yi

Bib: 22180•F

CA

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
10:03/mi
31:12
↑ 97↓ 3451.5%
10K· 6.21 mi
9:54/mi
1:01:58
↑ 79↓ 1380.4%
15K· 9.32 mi
10:27/mi
1:34:25
↑ 67↓ 78
20K· 12.43 mi
11:12/mi
2:09:13
↑ 106↓ 860.1%
Half· 13.11 mi
10:38/mi
2:16:28
↑ 19↓ 370.5%
25K· 15.53 mi
11:51/mi
2:45:12
↑ 66↓ 880.2%
30K· 18.64 mi
12:52/mi
3:25:09
↑ 181↓ 1480.2%
20M
12:50/mi
3:42:35
↑ 64↓ 500.2%
21M
14:43/mi
3:57:18
↑ 106↓ 241.6%
35K· 21.75 mi
11:56/mi
4:06:14
↑ 17↓ 861.7%
23M
13:47/mi
4:23:30
↑ 23↓ 630.6%
24M
11:52/mi
4:35:22
↓ 821.3%
40K· 24.85 mi
12:04/mi
4:45:41
↓ 200.3%
25.2M
13:44/mi
4:50:25
↑ 13↓ 160.2%
Finish· 26.22 mi
11:06/mi
5:01:44
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:16:28
Pace10:25 /mi
2nd Half
Distance13.11 mi
Time2:45:16
Pace12:36 /mi
📊Positive Split: 21.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:32:1631:1210:0331:12
10:03
-
10K
6.21 mi12:03:021:01:589:5830:46
9:54
-0:09
15K
9.32 mi12:35:291:34:2510:0832:27
10:27
+0:33
20K
12.43 mi13:10:172:09:1310:2434:48
11:12
+0:45
Half
13.11 mi13:17:322:16:2810:257:15
10:38
-0:34
25K
15.53 mi13:46:162:45:1210:3828:44
11:51
+1:13
30K
18.64 mi14:26:133:25:0911:0039:57
12:52
+1:01
20M
20.00 mi14:43:393:42:3511:0817:26
12:50
-0:02
21M
21.00 mi14:58:223:57:1811:1814:43
14:43
+1:53
35K
21.75 mi15:07:184:06:1411:198:56
11:56
-2:47
23M
23.00 mi15:24:344:23:3011:2717:16
13:47
+1:51
24M
24.00 mi15:36:264:35:2211:2811:52
11:52
-1:55
40K
24.85 mi15:46:454:45:4111:3010:19
12:04
+0:12
25.2M
25.20 mi15:51:294:50:2511:314:44
13:44
+1:40
Finish
26.22 mi16:02:485:01:4411:3111:19
11:06
-2:38

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

9:54 /mi

Average Pace

11:31 /mi

Slowest Pace

14:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:59

37% of race

Time at Steady Pace

1:34:39

31% of race

Time at Slower Pace

1:34:06

31% of race

Average Pace: 11:30 /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 mi11:32:1631:1210:0331:12
10:03
#23083
10K
6.21 mi12:03:021:01:589:5830:46
9:54
#22718
15K
9.32 mi12:35:291:34:2510:0832:27
10:27
#22777
20K
12.43 mi13:10:172:09:1310:2434:48
11:12
#22812
Half
13.11 mi13:17:322:16:2810:257:15
10:38
#22814
25K
15.53 mi13:46:162:45:1210:3828:44
11:51
#22870
30K
18.64 mi14:26:133:25:0911:0039:57
12:52
#22985
20M
20.00 mi14:43:393:42:3511:0817:26
12:50
#22974
21M
21.00 mi14:58:223:57:1811:1814:43
14:43
#23015
35K
21.75 mi15:07:184:06:1411:198:56
11:56
#22965
23M
23.00 mi15:24:344:23:3011:2717:16
13:47
#23030
24M
24.00 mi15:36:264:35:2211:2811:52
11:52
#22989
40K
24.85 mi15:46:454:45:4111:3010:19
12:04
#22921
25.2M
25.20 mi15:51:294:50:2511:314:44
13:44
#22905
Finish
26.22 mi16:02:485:01:4411:3111:19
11:06
#22881
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi230839437943722830(Top 89%)9331(Top 85%)9331(Top 786%)
10K6.21 mi3.10 mi22718+3659272+1659272+16522344(Top 87%)9089(Top 83%)9089(Top 766%)
15K9.32 mi3.11 mi22777-599294-229294-2222830(Top 89%)9331(Top 85%)9331(Top 786%)
20K12.43 mi3.11 mi22812-359311-179311-1722978(Top 90%)9441(Top 86%)9441(Top 795%)
Half13.11 mi0.68 mi22814-29315-49315-422913(Top 90%)9449(Top 86%)9449(Top 796%)
25K15.53 mi2.42 mi22870-569378-639378-6322929(Top 90%)9502(Top 87%)9502(Top 801%)
30K18.64 mi3.11 mi22985-1159491-1139491-11323117(Top 90%)9710(Top 89%)9710(Top 818%)
20M20.00 mi1.36 mi22974+119505-149505-1422649(Top 89%)9580(Top 88%)9580(Top 807%)
21M21.00 mi1.00 mi23015-419547-429547-4223240(Top 91%)9905(Top 91%)9905(Top 834%)
35K21.75 mi0.75 mi22965+509533+149533+1421697(Top 85%)9195(Top 84%)9195(Top 775%)
23M23.00 mi1.25 mi23030-659581-489581-4823562(Top 92%)10095(Top 92%)10095(Top 850%)
24M24.00 mi1.00 mi22989+419565+169565+1621198(Top 83%)9044(Top 83%)9044(Top 762%)
40K24.85 mi0.85 mi22921+689535+309535+3020603(Top 81%)8810(Top 81%)8810(Top 742%)
25.2M25.20 mi0.35 mi22905+169527+89527+821163(Top 83%)9072(Top 83%)9072(Top 764%)
Finish26.22 mi1.02 mi22881+249525+29525+221619(Top 85%)9273(Top 85%)9273(Top 781%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

22830

Females

9331

F50-54

9331

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

22344

Females

9089

F50-54

9089

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

22830

Females

9331

F50-54

9331

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

22978

Females

9441

F50-54

9441

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

22913

Females

9449

F50-54

9449

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

22929

Females

9502

F50-54

9502

25K→30K

15.5 - 18.6 mi

Top 90%
×9story building
+181ft-148ft

Overall

23117

Females

9710

F50-54

9710

30K→20M

18.6 - 20.0 mi

Top 89%
×5story building
+64ft-50ft

Overall

22649

Females

9580

F50-54

9580

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

23240

Females

9905

F50-54

9905

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

21697

Females

9195

F50-54

9195

35K→23M

21.8 - 23.0 mi

Top 92%
×5story building
+23ft-63ft

Overall

23562

Females

10095

F50-54

10095

23M→24M

23.0 - 24.0 mi

Top 83%
×6story building
+12ft-82ft

Overall

21198

Females

9044

F50-54

9044

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

20603

Females

8810

F50-54

8810

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

21163

Females

9072

F50-54

9072

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2story building
+22ft-21ft

Overall

21619

Females

9273

F50-54

9273

Passing Analysis

Category:
Athletes Passed
1375
Passed By
1173
Net Change
+202
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23083
5K → 10K42762+365#23083#22718
10K → 15K133192-59#22718#22777
15K → 20K164199-35#22777#22812
20K → Half2830-2#22812#22814
Half → 25K106162-56#22814#22870
25K → 30K117232-115#22870#22985
30K → 20M7160+11#22985#22974
20M → 21M3576-41#22974#23015
21M → 35K6616+50#23015#22965
35K → 23M2792-65#22965#23030
23M → 24M498+41#23030#22989
24M → 40K7911+68#22989#22921
40K → 25.2M237+16#22921#22905
25.2M → Finish5026+24#22905#22881
TOTALS13751173+202
📊

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