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BOSTON MARATHON 2024

Chelsea Cook

Bib: 18190•F

NH

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 40%
Gender (Female)
#0 / 10924
Top 26%
Division (F18-39)
#0 / 4660
Top 42%
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
7:44/mi
24:01
↑ 97↓ 3451.5%
10K· 6.21 mi
7:41/mi
47:54
↑ 79↓ 1380.4%
15K· 9.32 mi
7:44/mi
1:11:55
↑ 67↓ 78
20K· 12.43 mi
7:49/mi
1:36:12
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:41:30
↑ 19↓ 370.5%
25K· 15.53 mi
8:02/mi
2:00:59
↑ 66↓ 880.2%
30K· 18.64 mi
8:24/mi
2:27:04
↑ 181↓ 1480.2%
20M
8:42/mi
2:38:54
↑ 64↓ 500.2%
21M
10:19/mi
2:49:13
↑ 106↓ 241.6%
35K· 21.75 mi
7:42/mi
2:54:59
↑ 17↓ 861.7%
23M
8:13/mi
3:05:16
↑ 23↓ 630.6%
24M
8:13/mi
3:13:29
↓ 821.3%
40K· 24.85 mi
8:26/mi
3:20:42
↓ 200.3%
25.2M
10:52/mi
3:24:27
↑ 13↓ 160.2%
Finish· 26.22 mi
8:19/mi
3:32:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:30
Pace7:45 /mi
2nd Half
Distance13.11 mi
Time1:51:26
Pace8:30 /mi
📊Positive Split: 9.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5324:017:4424:01
7:44
-
10K
6.21 mi11:39:4647:547:4323:53
7:41
-0:03
15K
9.32 mi12:03:471:11:557:4324:01
7:44
+0:03
20K
12.43 mi12:28:041:36:127:4424:17
7:49
+0:05
Half
13.11 mi12:33:221:41:307:455:18
7:46
-0:03
25K
15.53 mi12:52:512:00:597:4719:29
8:02
+0:16
30K
18.64 mi13:18:562:27:047:5326:05
8:24
+0:22
20M
20.00 mi13:30:462:38:547:5711:50
8:42
+0:18
21M
21.00 mi13:41:052:49:138:0310:19
10:19
+1:37
35K
21.75 mi13:46:512:54:598:035:46
7:42
-2:37
23M
23.00 mi13:57:083:05:168:0310:17
8:13
+0:31
24M
24.00 mi14:05:213:13:298:048:13
8:13
0:00
40K
24.85 mi14:12:343:20:428:047:13
8:26
+0:13
25.2M
25.20 mi14:16:193:24:278:073:45
10:52
+2:26
Finish
26.22 mi14:24:483:32:568:088:29
8:19
-2:33

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

7:41 /mi

Average Pace

8:08 /mi

Slowest Pace

10:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:17:41

36% of race

Time at Steady Pace

1:49:21

51% of race

Time at Slower Pace

25:54

12% of race

Average Pace: 8:07 /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 mi11:15:5324:017:4424:01
7:44
#12542
10K
6.21 mi11:39:4647:547:4323:53
7:41
#12181
15K
9.32 mi12:03:471:11:557:4324:01
7:44
#11864
20K
12.43 mi12:28:041:36:127:4424:17
7:49
#11474
Half
13.11 mi12:33:221:41:307:455:18
7:46
#11438
25K
15.53 mi12:52:512:00:597:4719:29
8:02
#11201
30K
18.64 mi13:18:562:27:047:5326:05
8:24
#10867
20M
20.00 mi13:30:462:38:547:5711:50
8:42
#10799
21M
21.00 mi13:41:052:49:138:0310:19
10:19
#11010
35K
21.75 mi13:46:512:54:598:035:46
7:42
#10776
23M
23.00 mi13:57:083:05:168:0310:17
8:13
#10467
24M
24.00 mi14:05:213:13:298:048:13
8:13
#10310
40K
24.85 mi14:12:343:20:428:047:13
8:26
#10198
25.2M
25.20 mi14:16:193:24:278:073:45
10:52
#10279
Finish
26.22 mi14:24:483:32:568:088:29
8:19
#10255
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi125423436343611428(Top 45%)2914(Top 27%)2914(Top 63%)
10K6.21 mi3.10 mi12181+3613266+1703266+17011776(Top 46%)3071(Top 28%)3071(Top 66%)
15K9.32 mi3.11 mi11864+3173128+1383128+13811428(Top 45%)2914(Top 27%)2914(Top 63%)
20K12.43 mi3.11 mi11474+3902923+2052923+20510545(Top 41%)2597(Top 24%)2597(Top 56%)
Half13.11 mi0.68 mi11438+362911+122911+1211144(Top 44%)2884(Top 26%)2884(Top 62%)
25K15.53 mi2.42 mi11201+2372831+802831+8010425(Top 41%)2696(Top 25%)2696(Top 58%)
30K18.64 mi3.11 mi10867+3342755+762755+7610114(Top 40%)2761(Top 25%)2761(Top 59%)
20M20.00 mi1.36 mi10799+682782-272782-2710591(Top 41%)3250(Top 30%)3250(Top 70%)
21M21.00 mi1.00 mi11010-2112936-1542936-15414189(Top 56%)5407(Top 49%)5407(Top 116%)
35K21.75 mi0.75 mi10776+2342857+792857+796170(Top 24%)1385(Top 13%)1385(Top 30%)
23M23.00 mi1.25 mi10467+3092761+962761+966906(Top 27%)1860(Top 17%)1860(Top 40%)
24M24.00 mi1.00 mi10310+1572737+242737+247879(Top 31%)2426(Top 22%)2426(Top 52%)
40K24.85 mi0.85 mi10198+1122716+212716+218072(Top 32%)2627(Top 24%)2627(Top 56%)
25.2M25.20 mi0.35 mi10279-812776-602776-6014080(Top 55%)5589(Top 51%)5589(Top 120%)
Finish26.22 mi1.02 mi10255+242800-242800-2410513(Top 41%)3745(Top 34%)3745(Top 80%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21story building
+97ft-345ft

Overall

11428

Females

2914

F18-39

2914

5K→10K

3.1 - 6.2 mi

Top 46%
×5story building
+79ft-138ft

Overall

11776

Females

3071

F18-39

3071

10K→15K

6.2 - 9.3 mi

Top 45%
×3story building
+67ft-78ft

Overall

11428

Females

2914

F18-39

2914

15K→20K

9.3 - 12.4 mi

Top 41%
×5story building
+106ft-86ft

Overall

10545

Females

2597

F18-39

2597

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

11144

Females

2884

F18-39

2884

Half→25K

13.1 - 15.5 mi

Top 41%
×4story building
+66ft-88ft

Overall

10425

Females

2696

F18-39

2696

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

10114

Females

2761

F18-39

2761

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

10591

Females

3250

F18-39

3250

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

14189

Females

5407

F18-39

5407

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6170

Females

1385

F18-39

1385

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

6906

Females

1860

F18-39

1860

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

7879

Females

2426

F18-39

2426

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8072

Females

2627

F18-39

2627

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14080

Females

5589

F18-39

5589

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

10513

Females

3745

F18-39

3745

Passing Analysis

Category:
Athletes Passed
3428*
Passed By
1141
Net Change
+2287
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12542
5K → 10K510149+361#12542#12181
10K → 15K39679+317#12181#11864
15K → 20K45060+390#11864#11474
20K → Half5721+36#11474#11438
Half → 25K31881+237#11438#11201
25K → 30K463129+334#11201#10867
30K → 20M171103+68#10867#10799
20M → 21M75286-211#10799#11010
21M → 35K2340+234#11010#10776
35K → 23M32011+309#10776#10467
23M → 24M18427+157#10467#10310
24M → 40K137*25+112#10310#10198
40K → 25.2M23104-81#10198#10279
25.2M → Finish9066+24#10279#10255
TOTALS3428*1141+2287

* 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