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BOSTON MARATHON 2024

Xin Li

Bib: 17101•F

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 39%
Gender (Female)
#0 / 10924
Top 25%
Division (F18-39)
#0 / 4660
Top 41%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:27
Rank: #13644
Start → 5K
7:52/mi
24:27 split
10K· 6.21 mi
49:13
Rank: #13815 (-171)
5K → 10K
7:58/mi
24:46 split
15K· 9.32 mi
1:14:09
Rank: #13741 (+74)
10K → 15K
8:02/mi
24:56 split
20K· 12.43 mi
1:39:07
Rank: #13237 (+504)
15K → 20K
8:02/mi
24:58 split
Half· 13.11 mi
1:44:33
Rank: #13162 (+75)
20K → Half
7:58/mi
5:26 split
25K· 15.53 mi
2:04:04
Rank: #12588 (+574)
Half → 25K
8:03/mi
19:31 split
30K· 18.64 mi
2:29:37
Rank: #11849 (+739)
25K → 30K
8:13/mi
25:33 split
20M
2:40:43
Rank: #11459 (+390)
30K → 20M
8:10/mi
11:06 split
21M
2:49:21
Rank: #11067 (+392)
20M → 21M
8:38/mi
8:38 split
35K· 21.75 mi
2:55:21
Rank: #10884 (+183)
21M → 35K
8:01/mi
6:00 split
23M
3:05:45
Rank: #10624 (+260)
35K → 23M
8:18/mi
10:24 split
24M
3:13:41
Rank: #10361 (+263)
23M → 24M
7:56/mi
7:56 split
40K· 24.85 mi
3:20:44
Rank: #10207 (+154)
24M → 40K
8:15/mi
7:03 split
25.2M
3:23:54
Rank: #10144 (+63)
40K → 25.2M
9:11/mi
3:10 split
Finish· 26.22 mi
3:32:04
Rank: #10050 (+94)
25.2M → Finish
8:01/mi
8:10 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:33
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:47:31
Pace8:12 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:3024:277:5224:27
7:52
-
10K
6.21 mi11:41:1649:137:5524:46
7:58
+0:06
15K
9.32 mi12:06:121:14:097:5724:56
8:02
+0:04
20K
12.43 mi12:31:101:39:077:5924:58
8:02
0:00
Half
13.11 mi12:36:361:44:337:595:26
7:58
-0:04
25K
15.53 mi12:56:072:04:047:5919:31
8:03
+0:05
30K
18.64 mi13:21:402:29:378:0225:33
8:13
+0:10
20M
20.00 mi13:32:462:40:438:0211:06
8:10
-0:03
21M
21.00 mi13:41:242:49:218:048:38
8:38
+0:28
35K
21.75 mi13:47:242:55:218:046:00
8:01
-0:37
23M
23.00 mi13:57:483:05:458:0510:24
8:18
+0:17
24M
24.00 mi14:05:443:13:418:047:56
7:56
-0:22
40K
24.85 mi14:12:473:20:448:057:03
8:15
+0:19
25.2M
25.20 mi14:15:573:23:548:053:10
9:11
+0:56
Finish
26.22 mi14:24:073:32:048:068:10
8:01
-1:10

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

8:06 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:28:54

99% of race

Time at Steady Pace

3:10

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:05 /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 mi11:16:3024:277:5224:27
7:52
#13644
10K
6.21 mi11:41:1649:137:5524:46
7:58
#13815
15K
9.32 mi12:06:121:14:097:5724:56
8:02
#13741
20K
12.43 mi12:31:101:39:077:5924:58
8:02
#13237
Half
13.11 mi12:36:361:44:337:595:26
7:58
#13162
25K
15.53 mi12:56:072:04:047:5919:31
8:03
#12588
30K
18.64 mi13:21:402:29:378:0225:33
8:13
#11849
20M
20.00 mi13:32:462:40:438:0211:06
8:10
#11459
21M
21.00 mi13:41:242:49:218:048:38
8:38
#11067
35K
21.75 mi13:47:242:55:218:046:00
8:01
#10884
23M
23.00 mi13:57:483:05:458:0510:24
8:18
#10624
24M
24.00 mi14:05:443:13:418:047:56
7:56
#10361
40K
24.85 mi14:12:473:20:448:057:03
8:15
#10207
25.2M
25.20 mi14:15:573:23:548:053:10
9:11
#10144
Finish
26.22 mi14:24:073:32:048:068:10
8:01
#10050
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi136444081408113626(Top 53%)4141(Top 38%)4141(Top 89%)
10K6.21 mi3.10 mi13815-1714223-1424223-14213995(Top 55%)4345(Top 40%)4345(Top 93%)
15K9.32 mi3.11 mi13741+744199+244199+2413626(Top 53%)4141(Top 38%)4141(Top 89%)
20K12.43 mi3.11 mi13237+5043922+2773922+27712095(Top 47%)3367(Top 31%)3367(Top 72%)
Half13.11 mi0.68 mi13162+753890+323890+3212511(Top 49%)3588(Top 33%)3588(Top 77%)
25K15.53 mi2.42 mi12588+5743584+3063584+30610522(Top 41%)2737(Top 25%)2737(Top 59%)
30K18.64 mi3.11 mi11849+7393262+3223262+3229157(Top 36%)2296(Top 21%)2296(Top 49%)
20M20.00 mi1.36 mi11459+3903110+1523110+1527693(Top 30%)1850(Top 17%)1850(Top 40%)
21M21.00 mi1.00 mi11067+3922964+1462964+1466872(Top 27%)1663(Top 15%)1663(Top 36%)
35K21.75 mi0.75 mi10884+1832914+502914+507968(Top 31%)2218(Top 20%)2218(Top 48%)
23M23.00 mi1.25 mi10624+2602838+762838+767412(Top 29%)2100(Top 19%)2100(Top 45%)
24M24.00 mi1.00 mi10361+2632760+782760+786303(Top 25%)1674(Top 15%)1674(Top 36%)
40K24.85 mi0.85 mi10207+1542720+402720+407071(Top 28%)2163(Top 20%)2163(Top 46%)
25.2M25.20 mi0.35 mi10144+632709+112709+117461(Top 29%)2410(Top 22%)2410(Top 52%)
Finish26.22 mi1.02 mi10050+942698+112698+118616(Top 34%)2878(Top 26%)2878(Top 62%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21stories
+97ft-345ft

Overall

13626

Females

4141

F18-39

4141

5K→10K

3.1 - 6.2 mi

Top 55%
×5stories
+79ft-138ft

Overall

13995

Females

4345

F18-39

4345

10K→15K

6.2 - 9.3 mi

Top 53%
×3stories
+67ft-78ft

Overall

13626

Females

4141

F18-39

4141

15K→20K

9.3 - 12.4 mi

Top 47%
×5stories
+106ft-86ft

Overall

12095

Females

3367

F18-39

3367

20K→Half

12.4 - 13.1 mi

Top 49%
×2stories
+19ft-37ft

Overall

12511

Females

3588

F18-39

3588

Half→25K

13.1 - 15.5 mi

Top 41%
×4stories
+66ft-88ft

Overall

10522

Females

2737

F18-39

2737

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

9157

Females

2296

F18-39

2296

30K→20M

18.6 - 20.0 mi

Top 30%
×5stories
+64ft-50ft

Overall

7693

Females

1850

F18-39

1850

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

6872

Females

1663

F18-39

1663

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

7968

Females

2218

F18-39

2218

35K→23M

21.8 - 23.0 mi

Top 29%
×5stories
+23ft-63ft

Overall

7412

Females

2100

F18-39

2100

23M→24M

23.0 - 24.0 mi

Top 25%
×6stories
+12ft-82ft

Overall

6303

Females

1674

F18-39

1674

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7071

Females

2163

F18-39

2163

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7461

Females

2410

F18-39

2410

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

8616

Females

2878

F18-39

2878

Passing Analysis

Category:
Athletes Passed
4360*
Passed By
766
Net Change
+3594
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13644
5K → 10K234405-171#13644#13815
10K → 15K251177+74#13815#13741
15K → 20K54238+504#13741#13237
20K → Half9520+75#13237#13162
Half → 25K58612+574#13162#12588
25K → 30K76324+739#12588#11849
30K → 20M3933+390#11849#11459
20M → 21M3975+392#11459#11067
21M → 35K1929+183#11067#10884
35K → 23M27919+260#10884#10624
23M → 24M2652+263#10624#10361
24M → 40K169*15+154#10361#10207
40K → 25.2M7310+63#10207#10144
25.2M → Finish12127+94#10144#10050
TOTALS4360*766+3594

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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