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BOSTON MARATHON 2024

Xiaoli Chen

Bib: 12951•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F45-49)
#0 / 1753
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
9:58/mi
30:58
↑ 97↓ 3451.5%
10K· 6.21 mi
10:43/mi
1:04:15
↑ 79↓ 1380.4%
15K· 9.32 mi
11:00/mi
1:38:27
↑ 67↓ 78
20K· 12.43 mi
11:04/mi
2:12:51
↑ 106↓ 860.1%
Half· 13.11 mi
16:07/mi
2:23:51
↑ 19↓ 370.5%
25K· 15.53 mi
11:55/mi
2:52:44
↑ 66↓ 880.2%
30K· 18.64 mi
11:21/mi
3:28:01
↑ 181↓ 1480.2%
20M
11:56/mi
3:44:14
↑ 64↓ 500.2%
21M
13:47/mi
3:58:01
↑ 106↓ 241.6%
35K· 21.75 mi
12:50/mi
4:07:37
↑ 17↓ 861.7%
23M
10:59/mi
4:21:22
↑ 23↓ 630.6%
24M
11:55/mi
4:33:17
↓ 821.3%
40K· 24.85 mi
11:59/mi
4:43:32
↓ 200.3%
25.2M
14:36/mi
4:48:34
↑ 13↓ 160.2%
Finish· 26.22 mi
11:47/mi
5:00:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:23:51
Pace10:58 /mi
2nd Half
Distance13.11 mi
Time2:36:43
Pace11:57 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:5130:589:5830:58
9:58
-
10K
6.21 mi12:00:081:04:1510:2033:17
10:43
+0:45
15K
9.32 mi12:34:201:38:2710:3434:12
11:00
+0:17
20K
12.43 mi13:08:442:12:5110:4134:24
11:04
+0:04
Half
13.11 mi13:19:442:23:5110:5811:00
16:07
+5:03
25K
15.53 mi13:48:372:52:4411:0728:53
11:55
-4:12
30K
18.64 mi14:23:543:28:0111:1035:17
11:21
-0:34
20M
20.00 mi14:40:073:44:1411:1316:13
11:56
+0:35
21M
21.00 mi14:53:543:58:0111:2013:47
13:47
+1:51
35K
21.75 mi15:03:304:07:3711:239:36
12:50
-0:57
23M
23.00 mi15:17:154:21:2211:2213:45
10:59
-1:51
24M
24.00 mi15:29:104:33:1711:2311:55
11:55
+0:56
40K
24.85 mi15:39:254:43:3211:2410:15
11:59
+0:04
25.2M
25.20 mi15:44:274:48:3411:275:02
14:36
+2:37
Finish
26.22 mi15:56:275:00:3411:2812:00
11:47
-2:49

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

9:58 /mi

Average Pace

11:28 /mi

Slowest Pace

16:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:36

49% of race

Time at Steady Pace

1:54:33

38% of race

Time at Slower Pace

39:25

13% of race

Average Pace: 11:28 /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 mi11:26:5130:589:5830:58
9:58
#22934
10K
6.21 mi12:00:081:04:1510:2033:17
10:43
#23464
15K
9.32 mi12:34:201:38:2710:3434:12
11:00
#23578
20K
12.43 mi13:08:442:12:5110:4134:24
11:04
#23404
Half
13.11 mi13:19:442:23:5110:5811:00
16:07
#23879
25K
15.53 mi13:48:372:52:4411:0728:53
11:55
#23746
30K
18.64 mi14:23:543:28:0111:1035:17
11:21
#23256
20M
20.00 mi14:40:073:44:1411:1316:13
11:56
#23119
21M
21.00 mi14:53:543:58:0111:2013:47
13:47
#23074
35K
21.75 mi15:03:304:07:3711:239:36
12:50
#23068
23M
23.00 mi15:17:154:21:2211:2213:45
10:59
#22883
24M
24.00 mi15:29:104:33:1711:2311:55
11:55
#22830
40K
24.85 mi15:39:254:43:3211:2410:15
11:59
#22776
25.2M
25.20 mi15:44:274:48:3411:275:02
14:36
#22781
Finish
26.22 mi15:56:275:00:3411:2812:00
11:47
#22803
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi229349360936023731(Top 93%)9816(Top 90%)9816(Top 560%)
10K6.21 mi3.10 mi23464-5309655-2959655-29523895(Top 94%)9910(Top 91%)9910(Top 565%)
15K9.32 mi3.11 mi23578-1149721-669721-6623731(Top 93%)9816(Top 90%)9816(Top 560%)
20K12.43 mi3.11 mi23404+1749648+739648+7322746(Top 89%)9317(Top 85%)9317(Top 531%)
Half13.11 mi0.68 mi23879-4759892-2449892-24425534(Top 100%)10914(Top 100%)10914(Top 623%)
25K15.53 mi2.42 mi23746+1339842+509842+5023025(Top 90%)9551(Top 87%)9551(Top 545%)
30K18.64 mi3.11 mi23256+4909636+2069636+20620737(Top 81%)8498(Top 78%)8498(Top 485%)
20M20.00 mi1.36 mi23119+1379587+499587+4921249(Top 83%)8889(Top 81%)8889(Top 507%)
21M21.00 mi1.00 mi23074+459578+99578+922030(Top 86%)9310(Top 85%)9310(Top 531%)
35K21.75 mi0.75 mi23068+69588-109588-1023050(Top 90%)9847(Top 90%)9847(Top 562%)
23M23.00 mi1.25 mi22883+1859501+879501+8718394(Top 72%)7608(Top 70%)7608(Top 434%)
24M24.00 mi1.00 mi22830+539482+199482+1921303(Top 83%)9087(Top 83%)9087(Top 518%)
40K24.85 mi0.85 mi22776+549462+209462+2020435(Top 80%)8734(Top 80%)8734(Top 498%)
25.2M25.20 mi0.35 mi22781-59467-59467-522508(Top 88%)9706(Top 89%)9706(Top 554%)
Finish26.22 mi1.02 mi22803-229486-199486-1922920(Top 90%)9908(Top 91%)9908(Top 565%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

23731

Females

9816

F45-49

9816

5K→10K

3.1 - 6.2 mi

Top 94%
×5story building
+79ft-138ft

Overall

23895

Females

9910

F45-49

9910

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

23731

Females

9816

F45-49

9816

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

22746

Females

9317

F45-49

9317

20K→Half

12.4 - 13.1 mi

Top 100%
×2story building
+19ft-37ft

Overall

25534

Females

10914

F45-49

10914

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

23025

Females

9551

F45-49

9551

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

20737

Females

8498

F45-49

8498

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

21249

Females

8889

F45-49

8889

20M→21M

20.0 - 21.0 mi

Top 86%
×8story building
+106ft-24ft

Overall

22030

Females

9310

F45-49

9310

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

23050

Females

9847

F45-49

9847

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

18394

Females

7608

F45-49

7608

23M→24M

23.0 - 24.0 mi

Top 83%
×6story building
+12ft-82ft

Overall

21303

Females

9087

F45-49

9087

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

20435

Females

8734

F45-49

8734

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

22508

Females

9706

F45-49

9706

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2story building
+22ft-21ft

Overall

22920

Females

9908

F45-49

9908

Passing Analysis

Category:
Athletes Passed
1689
Passed By
1558
Net Change
+131
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22934
5K → 10K56586-530#22934#23464
10K → 15K110224-114#23464#23578
15K → 20K23157+174#23578#23404
20K → Half0475-475#23404#23879
Half → 25K16431+133#23879#23746
25K → 30K4966+490#23746#23256
30K → 20M1458+137#23256#23119
20M → 21M7530+45#23119#23074
21M → 35K3630+6#23074#23068
35K → 23M1850+185#23068#22883
23M → 24M6815+53#22883#22830
24M → 40K7218+54#22830#22776
40K → 25.2M2227-5#22776#22781
25.2M → Finish2951-22#22781#22803
TOTALS16891558+131
📊

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