Boston Marathon logo
BOSTON MARATHON 2024

Li Ju Chen

Bib: 20880•F

0:00
0:00
/ mi
Masters
Be the first to cheer!
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
8:23/mi
26:04
↑ 97↓ 3451.5%
10K· 6.21 mi
8:43/mi
53:09
↑ 79↓ 1380.4%
15K· 9.32 mi
9:18/mi
1:22:03
↑ 67↓ 78
20K· 12.43 mi
9:15/mi
1:50:48
↑ 106↓ 860.1%
Half· 13.11 mi
10:01/mi
1:57:38
↑ 19↓ 370.5%
25K· 15.53 mi
10:13/mi
2:22:25
↑ 66↓ 880.2%
30K· 18.64 mi
10:31/mi
2:55:06
↑ 181↓ 1480.2%
20M
10:12/mi
3:08:58
↑ 64↓ 500.2%
21M
11:36/mi
3:20:34
↑ 106↓ 241.6%
35K· 21.75 mi
9:21/mi
3:27:34
↑ 17↓ 861.7%
23M
10:36/mi
3:40:50
↑ 23↓ 630.6%
24M
10:04/mi
3:50:54
↓ 821.3%
40K· 24.85 mi
10:39/mi
4:00:00
↓ 200.3%
25.2M
11:53/mi
4:04:06
↑ 13↓ 160.2%
Finish· 26.22 mi
10:03/mi
4:14:20
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:38
Pace8:58 /mi
2nd Half
Distance13.11 mi
Time2:16:42
Pace10:26 /mi
📊Positive Split: 16.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:4926:048:2326:04
8:23
-
10K
6.21 mi11:47:5453:098:3327:05
8:43
+0:20
15K
9.32 mi12:16:481:22:038:4828:54
9:18
+0:35
20K
12.43 mi12:45:331:50:488:5528:45
9:15
-0:03
Half
13.11 mi12:52:231:57:388:586:50
10:01
+0:46
25K
15.53 mi13:17:102:22:259:1024:47
10:13
+0:12
30K
18.64 mi13:49:512:55:069:2432:41
10:31
+0:18
20M
20.00 mi14:03:433:08:589:2713:52
10:12
-0:19
21M
21.00 mi14:15:193:20:349:3311:36
11:36
+1:24
35K
21.75 mi14:22:193:27:349:337:00
9:21
-2:15
23M
23.00 mi14:35:353:40:509:3613:16
10:36
+1:15
24M
24.00 mi14:45:393:50:549:3710:04
10:04
-0:32
40K
24.85 mi14:54:454:00:009:399:06
10:39
+0:35
25.2M
25.20 mi14:58:514:04:069:414:06
11:53
+1:14
Finish
26.22 mi15:09:054:14:209:4210:14
10:03
-1:50

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

8:23 /mi

Average Pace

9:42 /mi

Slowest Pace

11:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:48

46% of race

Time at Steady Pace

1:38:28

39% of race

Time at Slower Pace

38:04

15% of race

Average Pace: 9:42 /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 mi11:20:4926:048:2326:04
8:23
#17185
10K
6.21 mi11:47:5453:098:3327:05
8:43
#17827
15K
9.32 mi12:16:481:22:038:4828:54
9:18
#18717
20K
12.43 mi12:45:331:50:488:5528:45
9:15
#18579
Half
13.11 mi12:52:231:57:388:586:50
10:01
#18806
25K
15.53 mi13:17:102:22:259:1024:47
10:13
#19036
30K
18.64 mi13:49:512:55:069:2432:41
10:31
#19004
20M
20.00 mi14:03:433:08:589:2713:52
10:12
#18826
21M
21.00 mi14:15:193:20:349:3311:36
11:36
#18775
35K
21.75 mi14:22:193:27:349:337:00
9:21
#18604
23M
23.00 mi14:35:353:40:509:3613:16
10:36
#18482
24M
24.00 mi14:45:393:50:549:3710:04
10:04
#18391
40K
24.85 mi14:54:454:00:009:399:06
10:39
#18348
25.2M
25.20 mi14:58:514:04:069:414:06
11:53
#18298
Finish
26.22 mi15:09:054:14:209:4210:14
10:03
#18278
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi171856273627320033(Top 78%)7806(Top 71%)7806(Top 658%)
10K6.21 mi3.10 mi17827-6426632-3596632-35918461(Top 72%)7001(Top 64%)7001(Top 590%)
15K9.32 mi3.11 mi18717-8907146-5147146-51420033(Top 78%)7806(Top 71%)7806(Top 658%)
20K12.43 mi3.11 mi18579+1387062+847062+8418407(Top 72%)6941(Top 64%)6941(Top 585%)
Half13.11 mi0.68 mi18806-2277190-1287190-12821516(Top 84%)8680(Top 79%)8680(Top 731%)
25K15.53 mi2.42 mi19036-2307324-1347324-13419714(Top 77%)7768(Top 71%)7768(Top 654%)
30K18.64 mi3.11 mi19004+327366-427366-4218835(Top 74%)7490(Top 69%)7490(Top 631%)
20M20.00 mi1.36 mi18826+1787302+647302+6417149(Top 67%)6790(Top 62%)6790(Top 572%)
21M21.00 mi1.00 mi18775+517307-57307-517904(Top 70%)7281(Top 67%)7281(Top 613%)
35K21.75 mi0.75 mi18604+1717227+807227+8014987(Top 59%)5845(Top 54%)5845(Top 492%)
23M23.00 mi1.25 mi18482+1227185+427185+4217303(Top 68%)7063(Top 65%)7063(Top 595%)
24M24.00 mi1.00 mi18391+917160+257160+2516557(Top 65%)6725(Top 62%)6725(Top 567%)
40K24.85 mi0.85 mi18348+437153+77153+717126(Top 67%)7089(Top 65%)7089(Top 597%)
25.2M25.20 mi0.35 mi18298+507140+137140+1317116(Top 67%)7110(Top 65%)7110(Top 599%)
Finish26.22 mi1.02 mi18278+207160-207160-2018555(Top 73%)7759(Top 71%)7759(Top 654%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

20033

Females

7806

F50-54

7806

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

18461

Females

7001

F50-54

7001

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

20033

Females

7806

F50-54

7806

15K→20K

9.3 - 12.4 mi

Top 72%
×5story building
+106ft-86ft

Overall

18407

Females

6941

F50-54

6941

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

21516

Females

8680

F50-54

8680

Half→25K

13.1 - 15.5 mi

Top 77%
×4story building
+66ft-88ft

Overall

19714

Females

7768

F50-54

7768

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

18835

Females

7490

F50-54

7490

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17149

Females

6790

F50-54

6790

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

17904

Females

7281

F50-54

7281

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

14987

Females

5845

F50-54

5845

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

17303

Females

7063

F50-54

7063

23M→24M

23.0 - 24.0 mi

Top 65%
×6story building
+12ft-82ft

Overall

16557

Females

6725

F50-54

6725

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17126

Females

7089

F50-54

7089

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

17116

Females

7110

F50-54

7110

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

18555

Females

7759

F50-54

7759

Passing Analysis

Category:
Athletes Passed
1838
Passed By
2931
Net Change
-1093
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17185
5K → 10K108750-642#17185#17827
10K → 15K46936-890#17827#18717
15K → 20K315177+138#18717#18579
20K → Half7234-227#18579#18806
Half → 25K116346-230#18806#19036
25K → 30K245213+32#19036#19004
30K → 20M20123+178#19004#18826
20M → 21M11160+51#18826#18775
21M → 35K1776+171#18775#18604
35K → 23M17149+122#18604#18482
23M → 24M11423+91#18482#18391
24M → 40K8037+43#18391#18348
40K → 25.2M6616+50#18348#18298
25.2M → Finish8161+20#18298#18278
TOTALS18382931-1093
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing