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BOSTON MARATHON 2024

Chelsea Stachura

NJ

Bib: 17916 F

0:00
0:00
/ mi
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Division (F18-39)
#0 / 4660
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
8:16/mi
25:42
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
9:03/mi
53:50
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:32/mi
1:20:22
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:41/mi
1:47:21
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
10:13/mi
1:54:19
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:40/mi
2:17:46
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:36/mi
2:47:35
↑ 181↓ 1480.2%
138 ft elev
20M
9:24/mi
3:00:22
↑ 64↓ 500.2%
148 ft elev
21M
10:47/mi
3:11:09
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:08/mi
3:17:59
↑ 17↓ 861.7%
156 ft elev
23M
10:29/mi
3:31:07
↑ 23↓ 630.6%
116 ft elev
24M
9:51/mi
3:40:58
↓ 821.3%
34 ft elev
40K· 24.85 mi
10:04/mi
3:49:34
↓ 200.3%
20 ft elev
25.2M
12:02/mi
3:53:43
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
9:22/mi
4:03:16
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:19
Pace8:43 /mi
2nd Half
Distance13.11 mi
Time2:08:57
Pace9:50 /mi
📊Positive Split: 12.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:4725:428:1625:42
8:16
-
10K
6.21 mi11:44:5553:508:4028:08
9:03
+0:47
15K
9.32 mi12:11:271:20:228:3726:32
8:32
-0:31
20K
12.43 mi12:38:261:47:218:3826:59
8:41
+0:09
Half
13.11 mi12:45:241:54:198:436:58
10:13
+1:32
25K
15.53 mi13:08:512:17:468:5223:27
9:40
-0:33
30K
18.64 mi13:38:402:47:358:5929:49
9:36
-0:04
20M
20.00 mi13:51:273:00:229:0112:47
9:24
-0:12
21M
21.00 mi14:02:143:11:099:0610:47
10:47
+1:23
35K
21.75 mi14:09:043:17:599:066:50
9:08
-1:39
23M
23.00 mi14:22:123:31:079:1113:08
10:29
+1:21
24M
24.00 mi14:32:033:40:589:129:51
9:51
-0:38
40K
24.85 mi14:40:393:49:349:148:36
10:04
+0:13
25.2M
25.20 mi14:44:483:53:439:164:09
12:02
+1:58
Finish
26.22 mi14:54:214:03:169:179:33
9:22
-2:40

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

8:16 /mi

Average Pace

9:17 /mi

Slowest Pace

12:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:11

47% of race

Time at Steady Pace

1:25:27

35% of race

Time at Slower Pace

43:38

18% of race

Average Pace: 9:17 /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 mi11:16:4725:428:1625:42
8:16
#16477
10K
6.21 mi11:44:5553:508:4028:08
9:03
#18406
15K
9.32 mi12:11:271:20:228:3726:32
8:32
#17797
20K
12.43 mi12:38:261:47:218:3826:59
8:41
#17182
Half
13.11 mi12:45:241:54:198:436:58
10:13
#17574
25K
15.53 mi13:08:512:17:468:5223:27
9:40
#17692
30K
18.64 mi13:38:402:47:358:5929:49
9:36
#17315
20M
20.00 mi13:51:273:00:229:0112:47
9:24
#17080
21M
21.00 mi14:02:143:11:099:0610:47
10:47
#17001
35K
21.75 mi14:09:043:17:599:066:50
9:08
#16875
23M
23.00 mi14:22:123:31:079:1113:08
10:29
#16923
24M
24.00 mi14:32:033:40:589:129:51
9:51
#16870
40K
24.85 mi14:40:393:49:349:148:36
10:04
#16777
25.2M
25.20 mi14:44:483:53:439:164:09
12:02
#16793
Finish
26.22 mi14:54:214:03:169:179:33
9:22
#16744
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi164775851585116630(Top 65%)5936(Top 54%)5936(Top 127%)
10K6.21 mi3.10 mi18406-19296992-11416992-114119958(Top 78%)7804(Top 71%)7804(Top 167%)
15K9.32 mi3.11 mi17797+6096609+3836609+38316630(Top 65%)5936(Top 54%)5936(Top 127%)
20K12.43 mi3.11 mi17182+6156276+3336276+33315787(Top 62%)5464(Top 50%)5464(Top 117%)
Half13.11 mi0.68 mi17574-3926511-2356511-23522024(Top 86%)8974(Top 82%)8974(Top 193%)
25K15.53 mi2.42 mi17692-1186594-836594-8318115(Top 71%)6892(Top 63%)6892(Top 148%)
30K18.64 mi3.11 mi17315+3776441+1536441+15315840(Top 62%)5880(Top 54%)5880(Top 126%)
20M20.00 mi1.36 mi17080+2356336+1056336+10514125(Top 55%)5195(Top 48%)5195(Top 111%)
21M21.00 mi1.00 mi17001+796326+106326+1015732(Top 62%)6188(Top 57%)6188(Top 133%)
35K21.75 mi0.75 mi16875+1266273+536273+5314002(Top 55%)5338(Top 49%)5338(Top 115%)
23M23.00 mi1.25 mi16923-486332-596332-5917023(Top 67%)6924(Top 63%)6924(Top 149%)
24M24.00 mi1.00 mi16870+536328+46328+415834(Top 62%)6364(Top 58%)6364(Top 137%)
40K24.85 mi0.85 mi16777+936303+256303+2515247(Top 60%)6132(Top 56%)6132(Top 132%)
25.2M25.20 mi0.35 mi16793-166332-296332-2917431(Top 68%)7259(Top 66%)7259(Top 156%)
Finish26.22 mi1.02 mi16744+496334-26334-215954(Top 62%)6487(Top 59%)6487(Top 139%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

16630

Females

5936

F18-39

5936

5K→10K

3.1 - 6.2 mi

Top 78%
×5story building
+79ft-138ft

Overall

19958

Females

7804

F18-39

7804

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

16630

Females

5936

F18-39

5936

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

15787

Females

5464

F18-39

5464

20K→Half

12.4 - 13.1 mi

Top 86%
×2story building
+19ft-37ft

Overall

22024

Females

8974

F18-39

8974

Half→25K

13.1 - 15.5 mi

Top 71%
×4story building
+66ft-88ft

Overall

18115

Females

6892

F18-39

6892

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

15840

Females

5880

F18-39

5880

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14125

Females

5195

F18-39

5195

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

15732

Females

6188

F18-39

6188

21M→35K

21.0 - 21.8 mi

Top 55%
×7story building
+17ft-86ft

Overall

14002

Females

5338

F18-39

5338

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17023

Females

6924

F18-39

6924

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

15834

Females

6364

F18-39

6364

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

15247

Females

6132

F18-39

6132

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

17431

Females

7259

F18-39

7259

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

15954

Females

6487

F18-39

6487

Passing Analysis

Category:
Athletes Passed
2889
Passed By
3156
Net Change
-267
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16477
5K → 10K191948-1929#16477#18406
10K → 15K63829+609#18406#17797
15K → 20K63318+615#17797#17182
20K → Half4396-392#17182#17574
Half → 25K162280-118#17574#17692
25K → 30K47093+377#17692#17315
30K → 20M2438+235#17315#17080
20M → 21M13758+79#17080#17001
21M → 35K1359+126#17001#16875
35K → 23M82130-48#16875#16923
23M → 24M10552+53#16923#16870
24M → 40K12835+93#16870#16777
40K → 25.2M3753-16#16777#16793
25.2M → Finish9647+49#16793#16744
TOTALS28893156-267
📊

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