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BOSTON MARATHON 2024

Jaclyn Cook

Bib: 18720•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 39%
Gender (Female)
#0 / 10924
Top 24%
Masters (Masters Women)
#0 / 6263
Top 12%
Division (F40-44)
#0 / 1613
Top 25%
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
7:35/mi
23:33
↑ 97↓ 3451.5%
10K· 6.21 mi
7:25/mi
46:37
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:10:06
↑ 67↓ 78
20K· 12.43 mi
7:44/mi
1:34:07
↑ 106↓ 860.1%
Half· 13.11 mi
7:40/mi
1:39:21
↑ 19↓ 370.5%
25K· 15.53 mi
7:57/mi
1:58:37
↑ 66↓ 880.2%
30K· 18.64 mi
8:17/mi
2:24:21
↑ 181↓ 1480.2%
20M
8:48/mi
2:36:19
↑ 64↓ 500.2%
21M
9:32/mi
2:45:51
↑ 106↓ 241.6%
35K· 21.75 mi
8:17/mi
2:52:03
↑ 17↓ 861.7%
23M
8:47/mi
3:03:03
↑ 23↓ 630.6%
24M
8:47/mi
3:11:50
↓ 821.3%
40K· 24.85 mi
9:17/mi
3:19:46
↓ 200.3%
25.2M
9:28/mi
3:23:02
↑ 13↓ 160.2%
Finish· 26.22 mi
8:03/mi
3:31:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:21
Pace7:35 /mi
2nd Half
Distance13.11 mi
Time1:51:53
Pace8:32 /mi
📊Positive Split: 12.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0423:337:3523:33
7:35
-
10K
6.21 mi11:39:0846:377:3023:04
7:25
-0:10
15K
9.32 mi12:02:371:10:067:3123:29
7:34
+0:09
20K
12.43 mi12:26:381:34:077:3424:01
7:44
+0:10
Half
13.11 mi12:31:521:39:217:355:14
7:40
-0:04
25K
15.53 mi12:51:081:58:377:3819:16
7:57
+0:17
30K
18.64 mi13:16:522:24:217:4525:44
8:17
+0:20
20M
20.00 mi13:28:502:36:197:4911:58
8:48
+0:31
21M
21.00 mi13:38:222:45:517:549:32
9:32
+0:44
35K
21.75 mi13:44:342:52:037:556:12
8:17
-1:15
23M
23.00 mi13:55:343:03:037:5811:00
8:47
+0:30
24M
24.00 mi14:04:213:11:508:008:47
8:47
0:00
40K
24.85 mi14:12:173:19:468:027:56
9:17
+0:30
25.2M
25.20 mi14:15:333:23:028:033:16
9:28
+0:11
Finish
26.22 mi14:23:453:31:148:048:12
8:03
-1:25

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

7:25 /mi

Average Pace

8:04 /mi

Slowest Pace

9:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:21

47% of race

Time at Steady Pace

59:24

28% of race

Time at Slower Pace

52:29

25% of race

Average Pace: 8:03 /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 mi11:16:0423:337:3523:33
7:35
#11415
10K
6.21 mi11:39:0846:377:3023:04
7:25
#10521
15K
9.32 mi12:02:371:10:067:3123:29
7:34
#10341
20K
12.43 mi12:26:381:34:077:3424:01
7:44
#10207
Half
13.11 mi12:31:521:39:217:355:14
7:40
#10197
25K
15.53 mi12:51:081:58:377:3819:16
7:57
#10062
30K
18.64 mi13:16:522:24:217:4525:44
8:17
#9854
20M
20.00 mi13:28:502:36:197:4911:58
8:48
#9905
21M
21.00 mi13:38:222:45:517:549:32
9:32
#9924
35K
21.75 mi13:44:342:52:037:556:12
8:17
#9884
23M
23.00 mi13:55:343:03:037:5811:00
8:47
#9834
24M
24.00 mi14:04:213:11:508:008:47
8:47
#9874
40K
24.85 mi14:12:173:19:468:027:56
9:17
#9969
25.2M
25.20 mi14:15:333:23:028:033:16
9:28
#9916
Finish
26.22 mi14:23:453:31:148:048:12
8:03
#9853
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi114152794279410123(Top 40%)2242(Top 21%)2242(Top 139%)
10K6.21 mi3.10 mi10521+8942341+4532341+4539629(Top 38%)1938(Top 18%)1938(Top 120%)
15K9.32 mi3.11 mi10341+1802261+802261+8010123(Top 40%)2242(Top 21%)2242(Top 139%)
20K12.43 mi3.11 mi10207+1342260+12260+19965(Top 39%)2310(Top 21%)2310(Top 143%)
Half13.11 mi0.68 mi10197+102263-32263-310431(Top 41%)2521(Top 23%)2521(Top 156%)
25K15.53 mi2.42 mi10062+1352249+142249+149857(Top 39%)2417(Top 22%)2417(Top 150%)
30K18.64 mi3.11 mi9854+2082245+42245+49472(Top 37%)2444(Top 22%)2444(Top 152%)
20M20.00 mi1.36 mi9905-512324-792324-7911118(Top 44%)3535(Top 32%)3535(Top 219%)
21M21.00 mi1.00 mi9924-192396-722396-7210999(Top 43%)3740(Top 34%)3740(Top 232%)
35K21.75 mi0.75 mi9884+402411-152411-159515(Top 37%)2963(Top 27%)2963(Top 184%)
23M23.00 mi1.25 mi9834+502449-382449-3810024(Top 39%)3406(Top 31%)3406(Top 211%)
24M24.00 mi1.00 mi9874-402513-642513-6411041(Top 43%)3936(Top 36%)3936(Top 244%)
40K24.85 mi0.85 mi9969-952592-792592-7912154(Top 48%)4598(Top 42%)4598(Top 285%)
25.2M25.20 mi0.35 mi9916+532586+62586+68654(Top 34%)2978(Top 27%)2978(Top 185%)
Finish26.22 mi1.02 mi9853+632599-132599-138836(Top 35%)2977(Top 27%)2977(Top 185%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

10123

Females

2242

F40-44

2242

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

9629

Females

1938

F40-44

1938

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

10123

Females

2242

F40-44

2242

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

9965

Females

2310

F40-44

2310

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

10431

Females

2521

F40-44

2521

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

9857

Females

2417

F40-44

2417

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9472

Females

2444

F40-44

2444

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

11118

Females

3535

F40-44

3535

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

10999

Females

3740

F40-44

3740

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9515

Females

2963

F40-44

2963

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

10024

Females

3406

F40-44

3406

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

11041

Females

3936

F40-44

3936

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12154

Females

4598

F40-44

4598

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

8654

Females

2978

F40-44

2978

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

8836

Females

2977

F40-44

2977

Passing Analysis

Category:
Athletes Passed
3025*
Passed By
1461
Net Change
+1562
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11415
5K → 10K92935+894#11415#10521
10K → 15K299119+180#10521#10341
15K → 20K290156+134#10341#10207
20K → Half4131+10#10207#10197
Half → 25K259124+135#10197#10062
25K → 30K371163+208#10062#9854
30K → 20M135185-51#9854#9905
20M → 21M123141-19#9905#9924
21M → 35K9252+40#9924#9884
35K → 23M159109+50#9884#9834
23M → 24M95*135-40#9834#9874
24M → 40K54149-95#9874#9969
40K → 25.2M6815+53#9969#9916
25.2M → Finish11047+63#9916#9853
TOTALS3025*1461+1562

* 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