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BOSTON MARATHON 2024

Lily Dai

Bib: 17171•F

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 46%
Gender (Female)
#0 / 10924
Top 33%
Masters (Masters Women)
#0 / 6263
Top 21%
Division (F55-59)
#0 / 876
Top 6%
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
8:03/mi
25:01
↑ 97↓ 3451.5%
10K· 6.21 mi
8:01/mi
49:55
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:14:50
↑ 67↓ 78
20K· 12.43 mi
8:18/mi
1:40:37
↑ 106↓ 860.1%
Half· 13.11 mi
8:12/mi
1:46:13
↑ 19↓ 370.5%
25K· 15.53 mi
8:36/mi
2:07:05
↑ 66↓ 880.2%
30K· 18.64 mi
8:53/mi
2:34:42
↑ 181↓ 1480.2%
20M
8:45/mi
2:46:35
↑ 64↓ 500.2%
21M
9:05/mi
2:55:40
↑ 106↓ 241.6%
35K· 21.75 mi
8:17/mi
3:01:52
↑ 17↓ 861.7%
23M
8:37/mi
3:12:39
↑ 23↓ 630.6%
24M
8:11/mi
3:20:50
↓ 821.3%
40K· 24.85 mi
8:24/mi
3:28:01
↓ 200.3%
25.2M
9:28/mi
3:31:17
↑ 13↓ 160.2%
Finish· 26.22 mi
7:52/mi
3:39:18
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:13
Pace8:06 /mi
2nd Half
Distance13.11 mi
Time1:53:05
Pace8:38 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:3825:018:0325:01
8:03
-
10K
6.21 mi11:43:3249:558:0224:54
8:01
-0:02
15K
9.32 mi12:08:271:14:508:0224:55
8:01
0:00
20K
12.43 mi12:34:141:40:378:0625:47
8:18
+0:17
Half
13.11 mi12:39:501:46:138:065:36
8:12
-0:06
25K
15.53 mi13:00:422:07:058:1120:52
8:36
+0:24
30K
18.64 mi13:28:192:34:428:1827:37
8:53
+0:17
20M
20.00 mi13:40:122:46:358:2011:53
8:45
-0:08
21M
21.00 mi13:49:172:55:408:229:05
9:05
+0:20
35K
21.75 mi13:55:293:01:528:226:12
8:17
-0:48
23M
23.00 mi14:06:163:12:398:2310:47
8:37
+0:20
24M
24.00 mi14:14:273:20:508:228:11
8:11
-0:26
40K
24.85 mi14:21:383:28:018:227:11
8:24
+0:13
25.2M
25.20 mi14:24:543:31:178:233:16
9:28
+1:04
Finish
26.22 mi14:32:553:39:188:228:01
7:52
-1:36

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

7:52 /mi

Average Pace

8:22 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:51

38% of race

Time at Steady Pace

52:57

24% of race

Time at Slower Pace

1:23:30

38% of race

Average Pace: 8:22 /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 mi11:18:3825:018:0325:01
8:03
#15032
10K
6.21 mi11:43:3249:558:0224:54
8:01
#14661
15K
9.32 mi12:08:271:14:508:0224:55
8:01
#14252
20K
12.43 mi12:34:141:40:378:0625:47
8:18
#14037
Half
13.11 mi12:39:501:46:138:065:36
8:12
#14032
25K
15.53 mi13:00:422:07:058:1120:52
8:36
#13913
30K
18.64 mi13:28:192:34:428:1827:37
8:53
#13617
20M
20.00 mi13:40:122:46:358:2011:53
8:45
#13312
21M
21.00 mi13:49:172:55:408:229:05
9:05
#12984
35K
21.75 mi13:55:293:01:528:226:12
8:17
#12820
23M
23.00 mi14:06:163:12:398:2310:47
8:37
#12555
24M
24.00 mi14:14:273:20:508:228:11
8:11
#12298
40K
24.85 mi14:21:383:28:018:227:11
8:24
#12110
25.2M
25.20 mi14:24:543:31:178:233:16
9:28
#12033
Finish
26.22 mi14:32:553:39:188:228:01
7:52
#11823
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi150324964496413591(Top 53%)4128(Top 38%)4128(Top 471%)
10K6.21 mi3.10 mi14661+3714728+2364728+23614323(Top 56%)4522(Top 41%)4522(Top 516%)
15K9.32 mi3.11 mi14252+4094487+2414487+24113591(Top 53%)4128(Top 38%)4128(Top 471%)
20K12.43 mi3.11 mi14037+2154387+1004387+10013694(Top 54%)4240(Top 39%)4240(Top 484%)
Half13.11 mi0.68 mi14032+54382+54382+514053(Top 55%)4487(Top 41%)4487(Top 512%)
25K15.53 mi2.42 mi13913+1194349+334349+3313622(Top 53%)4390(Top 40%)4390(Top 501%)
30K18.64 mi3.11 mi13617+2964262+874262+8712698(Top 50%)4108(Top 38%)4108(Top 469%)
20M20.00 mi1.36 mi13312+3054163+994163+9910819(Top 42%)3380(Top 31%)3380(Top 386%)
21M21.00 mi1.00 mi12984+3284024+1394024+1398987(Top 35%)2697(Top 25%)2697(Top 308%)
35K21.75 mi0.75 mi12820+1643960+643960+649548(Top 37%)2996(Top 27%)2996(Top 342%)
23M23.00 mi1.25 mi12555+2653872+883872+889092(Top 36%)2924(Top 27%)2924(Top 334%)
24M24.00 mi1.00 mi12298+2573792+803792+807693(Top 30%)2345(Top 21%)2345(Top 268%)
40K24.85 mi0.85 mi12110+1883727+653727+657900(Top 31%)2558(Top 23%)2558(Top 292%)
25.2M25.20 mi0.35 mi12033+773706+213706+218695(Top 34%)3019(Top 28%)3019(Top 345%)
Finish26.22 mi1.02 mi11823+2103632+743632+747764(Top 30%)2462(Top 23%)2462(Top 281%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

13591

Females

4128

F55-59

4128

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

14323

Females

4522

F55-59

4522

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

13591

Females

4128

F55-59

4128

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

13694

Females

4240

F55-59

4240

20K→Half

12.4 - 13.1 mi

Top 55%
×2story building
+19ft-37ft

Overall

14053

Females

4487

F55-59

4487

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

13622

Females

4390

F55-59

4390

25K→30K

15.5 - 18.6 mi

Top 50%
×9story building
+181ft-148ft

Overall

12698

Females

4108

F55-59

4108

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

10819

Females

3380

F55-59

3380

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

8987

Females

2697

F55-59

2697

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9548

Females

2996

F55-59

2996

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9092

Females

2924

F55-59

2924

23M→24M

23.0 - 24.0 mi

Top 30%
×6story building
+12ft-82ft

Overall

7693

Females

2345

F55-59

2345

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

7900

Females

2558

F55-59

2558

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

8695

Females

3019

F55-59

3019

25.2M→Finish

25.2 - 26.2 mi

Top 30%
×2story building
+22ft-21ft

Overall

7764

Females

2462

F55-59

2462

Passing Analysis

Category:
Athletes Passed
3942
Passed By
733
Net Change
+3209
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15032
5K → 10K500129+371#15032#14661
10K → 15K47869+409#14661#14252
15K → 20K351136+215#14252#14037
20K → Half5045+5#14037#14032
Half → 25K260141+119#14032#13913
25K → 30K435139+296#13913#13617
30K → 20M32217+305#13617#13312
20M → 21M3379+328#13312#12984
21M → 35K1717+164#12984#12820
35K → 23M27712+265#12820#12555
23M → 24M2658+257#12555#12298
24M → 40K1957+188#12298#12110
40K → 25.2M847+77#12110#12033
25.2M → Finish2177+210#12033#11823
TOTALS3942733+3209
📊

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