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BOSTON MARATHON 2024

Xiaoli Cai

WA

Bib: 21181 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 48%
Masters (Masters Women)
#0 / 6263
Top 39%
Division (F60-64)
#0 / 549
Top 10%
Race Day Weather
55°/45°F
scattered clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:25/mi
26:09
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:36/mi
52:52
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:38/mi
1:19:41
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:59/mi
1:47:37
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:20/mi
1:53:18
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:57/mi
2:15:00
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:14/mi
2:43:42
↑ 181↓ 1480.2%
138 ft elev
20M
9:21/mi
2:56:24
↑ 64↓ 500.2%
148 ft elev
21M
9:37/mi
3:06:01
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:49/mi
3:12:37
↑ 17↓ 861.7%
156 ft elev
23M
9:05/mi
3:23:59
↑ 23↓ 630.6%
116 ft elev
24M
9:00/mi
3:32:59
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:57/mi
3:40:38
↓ 200.3%
20 ft elev
25.2M
9:46/mi
3:44:00
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:41/mi
3:52:51
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:53:188:39 /mi⚡ faster
2nd Half
1:59:339:07 /mi+5.5%
Positive split — 5.5% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
26:098:253.11 mi26:09
8:25
-
10K
52:528:303.10 mi26:43
8:36
+0:11
15K
1:19:418:333.11 mi26:49
8:38
+0:02
20K
1:47:378:403.11 mi27:56
8:59
+0:21
Half(13.11 mi)
1:53:188:390.68 mi5:41
8:20
-0:39
25K
2:15:008:412.42 mi21:42
8:57
+0:37
30K
2:43:428:473.11 mi28:42
9:14
+0:17
20M
2:56:248:491.36 mi12:42
9:21
+0:07
21M
3:06:018:511.00 mi9:37
9:37
+0:16
35K
3:12:378:510.75 mi6:36
8:49
-0:48
23M
3:23:598:521.25 mi11:22
9:05
+0:16
24M
3:32:598:521.00 mi9:00
9:00
-0:05
40K
3:40:388:530.85 mi7:39
8:57
-0:03
25.2M
3:44:008:530.35 mi3:22
9:46
+0:49
Finish(26.22 mi)
3:52:518:531.02 mi8:51
8:41
-1:05
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:20 /mi

Average Pace

8:53 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:58:28

77% of race

Time at Steady Pace

54:23

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:53 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi17317635363531713362146214
10K3.10 mi17561-2446481-1286481-1281785066366636
15K3.11 mi17403+1586377+1046377+1041713362146214
20K3.11 mi17275+1286335+426335+421729863196319
Half(13.11 mi)0.68 mi17143+1326261+746261+741483749504950
25K2.42 mi16781+3626065+1966065+1961530453415341
30K3.11 mi16312+4695860+2055860+2051436050735073
20M1.36 mi16128+1845782+785782+781385050395039
21M1.00 mi15858+2705672+1105672+1101137639413941
35K0.75 mi15720+1385619+535619+531249245404540
23M1.25 mi15460+2605515+1045515+1041160142164216
24M1.00 mi15312+1485468+475468+471219745224522
40K0.85 mi15094+2185380+885380+881065739083908
25.2M0.35 mi14971+1235326+545326+541000536493649
Finish(26.22 mi)1.02 mi14854+1175296+305296+301257947654765

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17133

Females

6214

F60-64

6214

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

17850

Females

6636

F60-64

6636

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17133

Females

6214

F60-64

6214

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

17298

Females

6319

F60-64

6319

20K→Half

12.4 - 13.1 mi

Top 58%
×2story building
+19ft-37ft

Overall

14837

Females

4950

F60-64

4950

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

15304

Females

5341

F60-64

5341

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14360

Females

5073

F60-64

5073

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

13850

Females

5039

F60-64

5039

20M→21M

20.0 - 21.0 mi

Top 45%
×8story building
+106ft-24ft

Overall

11376

Females

3941

F60-64

3941

21M→35K

21.0 - 21.8 mi

Top 49%
×7story building
+17ft-86ft

Overall

12492

Females

4540

F60-64

4540

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

11601

Females

4216

F60-64

4216

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

12197

Females

4522

F60-64

4522

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

10657

Females

3908

F60-64

3908

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

10005

Females

3649

F60-64

3649

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

12579

Females

4765

F60-64

4765

Passing Analysis

Category:
Passed
3453
Passed By
990
Net Change
+2463
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17317
5K → 10K191435-244#17317#17561
10K → 15K318160+158#17561#17403
15K → 20K322194+128#17403#17275
20K → Half1353+132#17275#17143
Half → 25K40240+362#17143#16781
25K → 30K51546+469#16781#16312
30K → 20M21127+184#16312#16128
20M → 21M2788+270#16128#15858
21M → 35K1457+138#15858#15720
35K → 23M27919+260#15720#15460
23M → 24M16517+148#15460#15312
24M → 40K2268+218#15312#15094
40K → 25.2M1252+123#15094#14971
25.2M → Finish14124+117#14971#14854
TOTALS3453990+2463

Passing Charts

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