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BOSTON MARATHON 2024

Li Jun

Bib: 18781•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 28%
Gender (Female)
#0 / 10924
Top 13%
Masters (Masters Women)
#0 / 6263
Top 5%
Division (F40-44)
#0 / 1613
Top 11%
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
7:35/mi
23:33
↑ 97↓ 3451.5%
10K· 6.21 mi
7:25/mi
46:36
↑ 79↓ 1380.4%
15K· 9.32 mi
7:26/mi
1:09:41
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:33:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:21/mi
1:38:14
↑ 19↓ 370.5%
25K· 15.53 mi
7:34/mi
1:56:34
↑ 66↓ 880.2%
30K· 18.64 mi
7:52/mi
2:20:59
↑ 181↓ 1480.2%
20M
7:47/mi
2:31:33
↑ 64↓ 500.2%
21M
8:19/mi
2:39:52
↑ 106↓ 241.6%
35K· 21.75 mi
8:20/mi
2:46:06
↑ 17↓ 861.7%
23M
7:50/mi
2:55:54
↑ 23↓ 630.6%
24M
7:31/mi
3:03:25
↓ 821.3%
40K· 24.85 mi
8:15/mi
3:10:28
↓ 200.3%
25.2M
9:14/mi
3:13:39
↑ 13↓ 160.2%
Finish· 26.22 mi
7:45/mi
3:21:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:14
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:43:19
Pace7:53 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:5523:337:3523:33
7:35
-
10K
6.21 mi11:37:5846:367:3023:03
7:25
-0:10
15K
9.32 mi12:01:031:09:417:2923:05
7:26
+0:01
20K
12.43 mi12:24:351:33:137:3023:32
7:34
+0:08
Half
13.11 mi12:29:361:38:147:305:01
7:21
-0:13
25K
15.53 mi12:47:561:56:347:3018:20
7:34
+0:13
30K
18.64 mi13:12:212:20:597:3424:25
7:52
+0:18
20M
20.00 mi13:22:552:31:337:3510:34
7:47
-0:05
21M
21.00 mi13:31:142:39:527:378:19
8:19
+0:32
35K
21.75 mi13:37:282:46:067:386:14
8:20
+0:01
23M
23.00 mi13:47:162:55:547:399:48
7:50
-0:30
24M
24.00 mi13:54:473:03:257:397:31
7:31
-0:19
40K
24.85 mi14:01:503:10:287:407:03
8:15
+0:44
25.2M
25.20 mi14:05:013:13:397:413:11
9:14
+0:59
Finish
26.22 mi14:12:553:21:337:427:54
7:45
-1:29

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

7:21 /mi

Average Pace

7:42 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

51:09

25% of race

Time at Steady Pace

2:05:37

62% of race

Time at Slower Pace

24:47

12% of race

Average Pace: 7:41 /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 mi11:14:5523:337:3523:33
7:35
#11407
10K
6.21 mi11:37:5846:367:3023:03
7:25
#10491
15K
9.32 mi12:01:031:09:417:2923:05
7:26
#9969
20K
12.43 mi12:24:351:33:137:3023:32
7:34
#9637
Half
13.11 mi12:29:361:38:147:305:01
7:21
#9542
25K
15.53 mi12:47:561:56:347:3018:20
7:34
#9102
30K
18.64 mi13:12:212:20:597:3424:25
7:52
#8576
20M
20.00 mi13:22:552:31:337:3510:34
7:47
#8260
21M
21.00 mi13:31:142:39:527:378:19
8:19
#7989
35K
21.75 mi13:37:282:46:067:386:14
8:20
#8019
23M
23.00 mi13:47:162:55:547:399:48
7:50
#7703
24M
24.00 mi13:54:473:03:257:397:31
7:31
#7445
40K
24.85 mi14:01:503:10:287:407:03
8:15
#7367
25.2M
25.20 mi14:05:013:13:397:413:11
9:14
#7335
Finish
26.22 mi14:12:553:21:337:427:54
7:45
#7269
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi11407278627869123(Top 36%)1746(Top 16%)1746(Top 108%)
10K6.21 mi3.10 mi10491+9162319+4672319+4679575(Top 37%)1908(Top 17%)1908(Top 118%)
15K9.32 mi3.11 mi9969+5222075+2442075+2449123(Top 36%)1746(Top 16%)1746(Top 108%)
20K12.43 mi3.11 mi9637+3321958+1171958+1178920(Top 35%)1768(Top 16%)1768(Top 110%)
Half13.11 mi0.68 mi9542+951924+341924+348080(Top 32%)1391(Top 13%)1391(Top 86%)
25K15.53 mi2.42 mi9102+4401755+1691755+1697399(Top 29%)1325(Top 12%)1325(Top 82%)
30K18.64 mi3.11 mi8576+5261619+1361619+1367061(Top 28%)1381(Top 13%)1381(Top 86%)
20M20.00 mi1.36 mi8260+3161545+741545+745615(Top 22%)984(Top 9%)984(Top 61%)
21M21.00 mi1.00 mi7989+2711476+691476+695415(Top 21%)1041(Top 10%)1041(Top 65%)
35K21.75 mi0.75 mi8019-301526-501526-509777(Top 38%)3093(Top 28%)3093(Top 192%)
23M23.00 mi1.25 mi7703+3161456+701456+704951(Top 19%)990(Top 9%)990(Top 61%)
24M24.00 mi1.00 mi7445+2581389+671389+674230(Top 17%)780(Top 7%)780(Top 48%)
40K24.85 mi0.85 mi7367+781403-141403-147054(Top 28%)2146(Top 20%)2146(Top 133%)
25.2M25.20 mi0.35 mi7335+32140314037632(Top 30%)2471(Top 23%)2471(Top 153%)
Finish26.22 mi1.02 mi7269+661418-151418-157078(Top 28%)2145(Top 20%)2145(Top 133%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9123

Females

1746

F40-44

1746

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

9575

Females

1908

F40-44

1908

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9123

Females

1746

F40-44

1746

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

8920

Females

1768

F40-44

1768

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8080

Females

1391

F40-44

1391

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

7399

Females

1325

F40-44

1325

25K→30K

15.5 - 18.6 mi

Top 28%
×9story building
+181ft-148ft

Overall

7061

Females

1381

F40-44

1381

30K→20M

18.6 - 20.0 mi

Top 22%
×5story building
+64ft-50ft

Overall

5615

Females

984

F40-44

984

20M→21M

20.0 - 21.0 mi

Top 21%
×8story building
+106ft-24ft

Overall

5415

Females

1041

F40-44

1041

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

9777

Females

3093

F40-44

3093

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

4951

Females

990

F40-44

990

23M→24M

23.0 - 24.0 mi

Top 17%
×6story building
+12ft-82ft

Overall

4230

Females

780

F40-44

780

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7054

Females

2146

F40-44

2146

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7632

Females

2471

F40-44

2471

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2story building
+22ft-21ft

Overall

7078

Females

2145

F40-44

2145

Passing Analysis

Category:
Athletes Passed
4566*
Passed By
428
Net Change
+4138
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11407
5K → 10K94933+916#11407#10491
10K → 15K546*24+522#10491#9969
15K → 20K39866+332#9969#9637
20K → Half994+95#9637#9542
Half → 25K45616+440#9542#9102
25K → 30K57852+526#9102#8576
30K → 20M3193+316#8576#8260
20M → 21M28413+271#8260#7989
21M → 35K5888-30#7989#8019
35K → 23M32913+316#8019#7703
23M → 24M2613+258#7703#7445
24M → 40K11537+78#7445#7367
40K → 25.2M5927+32#7367#7335
25.2M → Finish11549+66#7335#7269
TOTALS4566*428+4138

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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