Boston Marathon logo
BOSTON MARATHON 2024

Delia Crotty

Bib: 26765•F

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 25550
Gender (Female)
#0 / 10924
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
29:42
Rank: #21909
Start → 5K
29:42 | 9:34/mi
10K· 6.21 mi
58:41
Rank: #21396 (+513)
5K → 10K
28:59 | 9:20/mi
15K· 9.32 mi
1:30:02
Rank: #21669 (-273)
10K → 15K
31:21 | 10:05/mi
20K· 12.43 mi
2:11:37
Rank: #23211 (-1542)
15K → 20K
41:35 | 13:23/mi
Half· 13.11 mi
2:18:44
Rank: #23180 (+31)
20K → Half
7:07 | 10:26/mi
25K· 15.53 mi
3:00:21
Rank: #24310 (-1130)
Half → 25K
41:37 | 17:10/mi
30K· 18.64 mi
3:40:27
Rank: #24131 (+179)
25K → 30K
40:06 | 12:54/mi
20M
3:59:17
Rank: #24104 (+27)
30K → 20M
18:50 | 13:52/mi
21M
4:13:02
Rank: #24019 (+85)
20M → 21M
13:45 | 13:45/mi
35K· 21.75 mi
4:22:48
Rank: #23991 (+28)
21M → 35K
9:46 | 13:03/mi
23M
4:39:24
Rank: #23954 (+37)
35K → 23M
16:36 | 13:15/mi
24M
4:53:09
Rank: #23949 (+5)
23M → 24M
13:45 | 13:45/mi
40K· 24.85 mi
5:04:06
Rank: #23916 (+33)
24M → 40K
10:57 | 12:48/mi
25.2M
5:08:22
Rank: #23873 (+43)
40K → 25.2M
4:16 | 12:22/mi
Finish· 26.22 mi
5:18:27
Rank: #23767 (+106)
25.2M → Finish
10:05 | 9:54/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:18:44
Pace10:35 /mi
2nd Half
Distance13.11 mi
Time2:59:43
Pace13:43 /mi
📊Positive Split: 29.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:1429:429:3429:42
9:34
-
10K
6.21 mi12:15:1358:419:2728:59
9:20
-0:14
15K
9.32 mi12:46:341:30:029:4031:21
10:05
+0:45
20K
12.43 mi13:28:092:11:3710:3541:35
13:23
+3:18
Half
13.11 mi13:35:162:18:4410:357:07
10:26
-2:57
25K
15.53 mi14:16:533:00:2111:3741:37
17:10
+6:44
30K
18.64 mi14:56:593:40:2711:5040:06
12:54
-4:16
20M
20.00 mi15:15:493:59:1711:5818:50
13:52
+0:58
21M
21.00 mi15:29:344:13:0212:0313:45
13:45
-0:07
35K
21.75 mi15:39:204:22:4812:059:46
13:03
-0:42
23M
23.00 mi15:55:564:39:2412:0916:36
13:15
+0:12
24M
24.00 mi16:09:414:53:0912:1313:45
13:45
+0:30
40K
24.85 mi16:20:385:04:0612:1410:57
12:48
-0:57
25.2M
25.20 mi16:24:545:08:2212:144:16
12:22
-0:26
Finish
26.22 mi16:34:595:18:2712:0910:05
9:54
-2:28

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

9:20 /mi

Average Pace

12:09 /mi

Slowest Pace

17:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:14

34% of race

Time at Steady Pace

2:49:36

53% of race

Time at Slower Pace

41:37

13% of race

Average Pace: 12:09 /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 mi11:46:1429:429:3429:42
9:34
#21909
10K
6.21 mi12:15:1358:419:2728:59
9:20
#21396
15K
9.32 mi12:46:341:30:029:4031:21
10:05
#21669
20K
12.43 mi13:28:092:11:3710:3541:35
13:23
#23211
Half
13.11 mi13:35:162:18:4410:357:07
10:26
#23180
25K
15.53 mi14:16:533:00:2111:3741:37
17:10
#24310
30K
18.64 mi14:56:593:40:2711:5040:06
12:54
#24131
20M
20.00 mi15:15:493:59:1711:5818:50
13:52
#24104
21M
21.00 mi15:29:344:13:0212:0313:45
13:45
#24019
35K
21.75 mi15:39:204:22:4812:059:46
13:03
#23991
23M
23.00 mi15:55:564:39:2412:0916:36
13:15
#23954
24M
24.00 mi16:09:414:53:0912:1313:45
13:45
#23949
40K
24.85 mi16:20:385:04:0612:1410:57
12:48
#23916
25.2M
25.20 mi16:24:545:08:2212:144:16
12:22
#23873
Finish
26.22 mi16:34:595:18:2712:0910:05
9:54
#23767
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi219098866886622126(Top 87%)8943(Top 82%)8943(Top 192%)
10K6.21 mi3.10 mi21396+5138590+2768590+27620876(Top 82%)8303(Top 76%)8303(Top 178%)
15K9.32 mi3.11 mi21669-2738724-1348724-13422126(Top 87%)8943(Top 82%)8943(Top 192%)
20K12.43 mi3.11 mi23211-15429541-8179541-81725090(Top 98%)10649(Top 97%)10649(Top 229%)
Half13.11 mi0.68 mi23180+319521+209521+2022528(Top 88%)9245(Top 85%)9245(Top 198%)
25K15.53 mi2.42 mi24310-113010164-64310164-64325509(Top 100%)10907(Top 100%)10907(Top 234%)
30K18.64 mi3.11 mi24131+17910090+7410090+7423194(Top 91%)9751(Top 89%)9751(Top 209%)
20M20.00 mi1.36 mi24104+2710085+510085+523839(Top 93%)10157(Top 93%)10157(Top 218%)
21M21.00 mi1.00 mi24019+8510059+2610059+2621990(Top 86%)9285(Top 85%)9285(Top 199%)
35K21.75 mi0.75 mi23991+2810050+910050+923301(Top 91%)9966(Top 91%)9966(Top 214%)
23M23.00 mi1.25 mi23954+3710044+610044+622926(Top 90%)9807(Top 90%)9807(Top 210%)
24M24.00 mi1.00 mi23949+510052-810052-823933(Top 94%)10322(Top 94%)10322(Top 222%)
40K24.85 mi0.85 mi23916+3310046+610046+621957(Top 86%)9454(Top 87%)9454(Top 203%)
25.2M25.20 mi0.35 mi23873+4310025+2110025+2118281(Top 72%)7680(Top 70%)7680(Top 165%)
Finish26.22 mi1.02 mi23767+1069981+449981+4418068(Top 71%)7542(Top 69%)7542(Top 162%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

22126

Females

8943

F18-39

8943

5K→10K

3.1 - 6.2 mi

Top 82%
×5stories
+79ft-138ft

Overall

20876

Females

8303

F18-39

8303

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

22126

Females

8943

F18-39

8943

15K→20K

9.3 - 12.4 mi

Top 98%
×5stories
+106ft-86ft

Overall

25090

Females

10649

F18-39

10649

20K→Half

12.4 - 13.1 mi

Top 88%
×2stories
+19ft-37ft

Overall

22528

Females

9245

F18-39

9245

Half→25K

13.1 - 15.5 mi

Top 100%
×4stories
+66ft-88ft

Overall

25509

Females

10907

F18-39

10907

25K→30K

15.5 - 18.6 mi

Top 91%
×9stories
+181ft-148ft

Overall

23194

Females

9751

F18-39

9751

30K→20M

18.6 - 20.0 mi

Top 93%
×5stories
+64ft-50ft

Overall

23839

Females

10157

F18-39

10157

20M→21M

20.0 - 21.0 mi

Top 86%
×8stories
+106ft-24ft

Overall

21990

Females

9285

F18-39

9285

21M→35K

21.0 - 21.8 mi

Top 91%
×7stories
+17ft-86ft

Overall

23301

Females

9966

F18-39

9966

35K→23M

21.8 - 23.0 mi

Top 90%
×5stories
+23ft-63ft

Overall

22926

Females

9807

F18-39

9807

23M→24M

23.0 - 24.0 mi

Top 94%
×6stories
+12ft-82ft

Overall

23933

Females

10322

F18-39

10322

24M→40K

24.0 - 24.9 mi

Top 86%
×1story
+6ft-20ft

Overall

21957

Females

9454

F18-39

9454

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

18281

Females

7680

F18-39

7680

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2stories
+22ft-21ft

Overall

18068

Females

7542

F18-39

7542

Passing Analysis

Category:
Athletes Passed
1408
Passed By
3266
Net Change
-1858
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21909
5K → 10K58168+513#21909#21396
10K → 15K90363-273#21396#21669
15K → 20K61548-1542#21669#23211
20K → Half4211+31#23211#23180
Half → 25K81138-1130#23180#24310
25K → 30K20324+179#24310#24131
30K → 20M5427+27#24131#24104
20M → 21M938+85#24104#24019
21M → 35K4113+28#24019#23991
35K → 23M5619+37#23991#23954
23M → 24M3530+5#23954#23949
24M → 40K4613+33#23949#23916
40K → 25.2M452+43#23916#23873
25.2M → Finish1082+106#23873#23767
TOTALS14083266-1858
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing