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BOSTON MARATHON 2024

Megan Krolak

Bib: 14527•F

IL

0:00
0:00
/ mi
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Overall
#0 / 25550
Top 47%
Gender (Female)
#0 / 10924
Top 34%
Division (F18-39)
#0 / 4660
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:08
Rank: #10327
Start → 5K
23:08 | 7:27/mi
10K· 6.21 mi
45:58
Rank: #9637 (+690)
5K → 10K
22:50 | 7:21/mi
15K· 9.32 mi
1:08:51
Rank: #9252 (+385)
10K → 15K
22:53 | 7:22/mi
20K· 12.43 mi
1:33:00
Rank: #9509 (-257)
15K → 20K
24:09 | 7:46/mi
Half· 13.11 mi
1:38:22
Rank: #9618 (-109)
20K → Half
5:22 | 7:52/mi
25K· 15.53 mi
1:59:05
Rank: #10278 (-660)
Half → 25K
20:43 | 8:33/mi
30K· 18.64 mi
2:28:14
Rank: #11306 (-1028)
25K → 30K
29:09 | 9:23/mi
20M
2:41:41
Rank: #11789 (-483)
30K → 20M
13:27 | 9:54/mi
21M
2:52:40
Rank: #12125 (-336)
20M → 21M
10:59 | 10:59/mi
35K· 21.75 mi
2:59:43
Rank: #12243 (-118)
21M → 35K
7:03 | 9:25/mi
23M
3:11:35
Rank: #12279 (-36)
35K → 23M
11:52 | 9:29/mi
24M
3:20:50
Rank: #12299 (-20)
23M → 24M
9:15 | 9:15/mi
40K· 24.85 mi
3:28:43
Rank: #12258 (+41)
24M → 40K
7:53 | 9:13/mi
25.2M
3:31:51
Rank: #12153 (+105)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:39:59
Rank: #11989 (+164)
25.2M → Finish
8:08 | 7:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:22
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time2:01:37
Pace9:17 /mi
📊Positive Split: 23.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:1623:087:2723:08
7:27
-
10K
6.21 mi11:17:0645:587:2422:50
7:21
-0:06
15K
9.32 mi11:39:591:08:517:2322:53
7:22
+0:01
20K
12.43 mi12:04:081:33:007:2924:09
7:46
+0:24
Half
13.11 mi12:09:301:38:227:305:22
7:52
+0:06
25K
15.53 mi12:30:131:59:057:4020:43
8:33
+0:41
30K
18.64 mi12:59:222:28:147:5729:09
9:23
+0:50
20M
20.00 mi13:12:492:41:418:0513:27
9:54
+0:31
21M
21.00 mi13:23:482:52:408:1310:59
10:59
+1:05
35K
21.75 mi13:30:512:59:438:167:03
9:25
-1:34
23M
23.00 mi13:42:433:11:358:2011:52
9:29
+0:04
24M
24.00 mi13:51:583:20:508:229:15
9:15
-0:14
40K
24.85 mi13:59:513:28:438:247:53
9:13
-0:02
25.2M
25.20 mi14:02:593:31:518:243:08
9:05
-0:08
Finish
26.22 mi14:11:073:39:598:248:08
7:59
-1:06

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

7:21 /mi

Average Pace

8:24 /mi

Slowest Pace

10:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:13

58% of race

Time at Steady Pace

1:08:20

31% of race

Time at Slower Pace

24:26

11% of race

Average Pace: 8:23 /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 mi10:54:1623:087:2723:08
7:27
#10327
10K
6.21 mi11:17:0645:587:2422:50
7:21
#9637
15K
9.32 mi11:39:591:08:517:2322:53
7:22
#9252
20K
12.43 mi12:04:081:33:007:2924:09
7:46
#9509
Half
13.11 mi12:09:301:38:227:305:22
7:52
#9618
25K
15.53 mi12:30:131:59:057:4020:43
8:33
#10278
30K
18.64 mi12:59:222:28:147:5729:09
9:23
#11306
20M
20.00 mi13:12:492:41:418:0513:27
9:54
#11789
21M
21.00 mi13:23:482:52:408:1310:59
10:59
#12125
35K
21.75 mi13:30:512:59:438:167:03
9:25
#12243
23M
23.00 mi13:42:433:11:358:2011:52
9:29
#12279
24M
24.00 mi13:51:583:20:508:229:15
9:15
#12299
40K
24.85 mi13:59:513:28:438:247:53
9:13
#12258
25.2M
25.20 mi14:02:593:31:518:243:08
9:05
#12153
Finish
26.22 mi14:11:073:39:598:248:08
7:59
#11989
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10327218821888636(Top 34%)1531(Top 14%)1531(Top 33%)
10K6.21 mi3.10 mi9637+6901885+3031885+3039066(Top 35%)1678(Top 15%)1678(Top 36%)
15K9.32 mi3.11 mi9252+3851741+1441741+1448636(Top 34%)1531(Top 14%)1531(Top 33%)
20K12.43 mi3.11 mi9509-2571902-1611902-16110254(Top 40%)2464(Top 23%)2464(Top 53%)
Half13.11 mi0.68 mi9618-1091963-611963-6111856(Top 46%)3266(Top 30%)3266(Top 70%)
25K15.53 mi2.42 mi10278-6602353-3902353-39013306(Top 52%)4213(Top 39%)4213(Top 90%)
30K18.64 mi3.11 mi11306-10282991-6382991-63814971(Top 59%)5398(Top 49%)5398(Top 116%)
20M20.00 mi1.36 mi11789-4833289-2983289-29816121(Top 63%)6267(Top 57%)6267(Top 134%)
21M21.00 mi1.00 mi12125-3363539-2503539-25016293(Top 64%)6473(Top 59%)6473(Top 139%)
35K21.75 mi0.75 mi12243-1183647-1083647-10815209(Top 60%)5933(Top 54%)5933(Top 127%)
23M23.00 mi1.25 mi12279-363729-823729-8213425(Top 53%)5115(Top 47%)5115(Top 110%)
24M24.00 mi1.00 mi12299-203793-643793-6413334(Top 52%)5088(Top 47%)5088(Top 109%)
40K24.85 mi0.85 mi12258+413805-123805-1211902(Top 47%)4486(Top 41%)4486(Top 96%)
25.2M25.20 mi0.35 mi12153+1053770+353770+357037(Top 28%)2217(Top 20%)2217(Top 48%)
Finish26.22 mi1.02 mi11989+1643722+483722+488453(Top 33%)2806(Top 26%)2806(Top 60%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

8636

Females

1531

F18-39

1531

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9066

Females

1678

F18-39

1678

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

8636

Females

1531

F18-39

1531

15K→20K

9.3 - 12.4 mi

Top 40%
×5stories
+106ft-86ft

Overall

10254

Females

2464

F18-39

2464

20K→Half

12.4 - 13.1 mi

Top 46%
×2stories
+19ft-37ft

Overall

11856

Females

3266

F18-39

3266

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

13306

Females

4213

F18-39

4213

25K→30K

15.5 - 18.6 mi

Top 59%
×9stories
+181ft-148ft

Overall

14971

Females

5398

F18-39

5398

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

16121

Females

6267

F18-39

6267

20M→21M

20.0 - 21.0 mi

Top 64%
×8stories
+106ft-24ft

Overall

16293

Females

6473

F18-39

6473

21M→35K

21.0 - 21.8 mi

Top 60%
×7stories
+17ft-86ft

Overall

15209

Females

5933

F18-39

5933

35K→23M

21.8 - 23.0 mi

Top 53%
×5stories
+23ft-63ft

Overall

13425

Females

5115

F18-39

5115

23M→24M

23.0 - 24.0 mi

Top 52%
×6stories
+12ft-82ft

Overall

13334

Females

5088

F18-39

5088

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

11902

Females

4486

F18-39

4486

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7037

Females

2217

F18-39

2217

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

8453

Females

2806

F18-39

2806

Passing Analysis

Category:
Athletes Passed
2215*
Passed By
3874
Net Change
-1662
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10327
5K → 10K729*39+690#10327#9637
10K → 15K41934+385#9637#9252
15K → 20K144401-257#9252#9509
20K → Half9118-109#9509#9618
Half → 25K83741-660#9618#10278
25K → 30K751102-1028#10278#11306
30K → 20M46529-483#11306#11789
20M → 21M59395-336#11789#12125
21M → 35K50168-118#12125#12243
35K → 23M118154-36#12243#12279
23M → 24M99119-20#12279#12299
24M → 40K10059+41#12299#12258
40K → 25.2M1105+105#12258#12153
25.2M → Finish17410+164#12153#11989
TOTALS2215*3874-1662

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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