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BOSTON MARATHON 2025

Ailsa Drelick

Bib: 24329•F

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 46%
Division (F55-59)
#0 / 994
Top 26%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:41
Rank: #18526
Start → 5K
25:41 | 8:16/mi
10K· 6.21 mi
51:32
Rank: #18572 (-46)
5K → 10K
25:51 | 8:19/mi
15K· 9.32 mi
1:17:32
Rank: #18527 (+45)
10K → 15K
26:00 | 8:22/mi
20K· 12.43 mi
1:43:58
Rank: #18424 (+103)
15K → 20K
26:26 | 8:30/mi
Half· 13.11 mi
1:49:39
Rank: #18405 (+19)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:10:04
Rank: #18082 (+323)
Half → 25K
20:25 | 8:25/mi
30K· 18.64 mi
2:37:41
Rank: #17837 (+245)
25K → 30K
27:37 | 8:53/mi
20M
2:49:53
Rank: #17747 (+90)
30K → 20M
12:12 | 8:59/mi
21M
2:59:34
Rank: #17701 (+46)
20M → 21M
9:41 | 9:41/mi
35K· 21.75 mi
3:06:11
Rank: #17678 (+23)
21M → 35K
6:37 | 8:51/mi
23M
3:17:54
Rank: #17702 (-24)
35K → 23M
11:43 | 9:21/mi
24M
3:27:17
Rank: #17742 (-40)
23M → 24M
9:23 | 9:23/mi
40K· 24.85 mi
3:35:40
Rank: #17872 (-130)
24M → 40K
8:23 | 9:48/mi
25.2M
3:39:45
Rank: #18019 (-147)
40K → 25.2M
4:05 | 11:50/mi
Finish· 26.22 mi
3:49:58
Rank: #18316 (-297)
25.2M → Finish
10:13 | 10:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:39
Pace8:22 /mi
2nd Half
Distance13.11 mi
Time2:00:19
Pace9:11 /mi
📊Positive Split: 9.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:5925:418:1625:41
8:16
-
10K
6.21 mi11:50:5051:328:1825:51
8:19
+0:03
15K
9.32 mi12:16:501:17:328:1926:00
8:22
+0:03
20K
12.43 mi12:43:161:43:588:2226:26
8:30
+0:08
Half
13.11 mi12:48:571:49:398:225:41
8:20
-0:10
25K
15.53 mi13:09:222:10:048:2220:25
8:25
+0:05
30K
18.64 mi13:36:592:37:418:2827:37
8:53
+0:28
20M
20.00 mi13:49:112:49:538:3012:12
8:59
+0:06
21M
21.00 mi13:58:522:59:348:339:41
9:41
+0:42
35K
21.75 mi14:05:293:06:118:346:37
8:51
-0:50
23M
23.00 mi14:17:123:17:548:3611:43
9:21
+0:30
24M
24.00 mi14:26:353:27:178:389:23
9:23
+0:02
40K
24.85 mi14:34:583:35:408:418:23
9:48
+0:25
25.2M
25.20 mi14:39:033:39:458:434:05
11:50
+2:02
Finish
26.22 mi14:49:163:49:588:4710:13
10:02
-1:48

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

8:47 /mi

Slowest Pace

11:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:38

45% of race

Time at Steady Pace

1:12:52

32% of race

Time at Slower Pace

53:28

23% of race

Average Pace: 8:46 /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 mi11:24:5925:418:1625:41
8:16
#18526
10K
6.21 mi11:50:5051:328:1825:51
8:19
#18572
15K
9.32 mi12:16:501:17:328:1926:00
8:22
#18527
20K
12.43 mi12:43:161:43:588:2226:26
8:30
#18424
Half
13.11 mi12:48:571:49:398:225:41
8:20
#18405
25K
15.53 mi13:09:222:10:048:2220:25
8:25
#18082
30K
18.64 mi13:36:592:37:418:2827:37
8:53
#17837
20M
20.00 mi13:49:112:49:538:3012:12
8:59
#17747
21M
21.00 mi13:58:522:59:348:339:41
9:41
#17701
35K
21.75 mi14:05:293:06:118:346:37
8:51
#17678
23M
23.00 mi14:17:123:17:548:3611:43
9:21
#17702
24M
24.00 mi14:26:353:27:178:389:23
9:23
#17742
40K
24.85 mi14:34:583:35:408:418:23
9:48
#17872
25.2M
25.20 mi14:39:033:39:458:434:05
11:50
#18019
Finish
26.22 mi14:49:163:49:588:4710:13
10:02
#18316
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi185266646664618517(Top 65%)6616(Top 54%)6616(Top 666%)
10K6.21 mi3.10 mi18572-466657-116657-1118685(Top 66%)6700(Top 55%)6700(Top 674%)
15K9.32 mi3.11 mi18527+456640+176640+1718517(Top 65%)6616(Top 54%)6616(Top 666%)
20K12.43 mi3.11 mi18424+1036582+586582+5818321(Top 65%)6514(Top 53%)6514(Top 655%)
Half13.11 mi0.68 mi18405+196567+156567+1518193(Top 64%)6443(Top 53%)6443(Top 648%)
25K15.53 mi2.42 mi18082+3236409+1586409+15816719(Top 59%)5704(Top 47%)5704(Top 574%)
30K18.64 mi3.11 mi17837+2456311+986311+9817101(Top 60%)6082(Top 50%)6082(Top 612%)
20M20.00 mi1.36 mi17747+906291+206291+2016702(Top 59%)5980(Top 49%)5980(Top 602%)
21M21.00 mi1.00 mi17701+466268+236268+2316978(Top 60%)6249(Top 51%)6249(Top 629%)
35K21.75 mi0.75 mi17678+236278-106278-1017523(Top 62%)6649(Top 54%)6649(Top 669%)
23M23.00 mi1.25 mi17702-246332-546332-5418059(Top 64%)7008(Top 57%)7008(Top 705%)
24M24.00 mi1.00 mi17742-406393-616393-6119170(Top 67%)7631(Top 62%)7631(Top 768%)
40K24.85 mi0.85 mi17872-1306474-816474-8119835(Top 70%)8059(Top 66%)8059(Top 811%)
25.2M25.20 mi0.35 mi18019-1476566-926566-9222903(Top 81%)9603(Top 79%)9603(Top 966%)
Finish26.22 mi1.02 mi18316-2976755-1896755-18923018(Top 81%)9666(Top 79%)9666(Top 972%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21stories
+97ft-345ft

Overall

18517

Females

6616

F55-59

6616

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

18685

Females

6700

F55-59

6700

10K→15K

6.2 - 9.3 mi

Top 65%
×3stories
+67ft-78ft

Overall

18517

Females

6616

F55-59

6616

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

18321

Females

6514

F55-59

6514

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

18193

Females

6443

F55-59

6443

Half→25K

13.1 - 15.5 mi

Top 59%
×4stories
+66ft-88ft

Overall

16719

Females

5704

F55-59

5704

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

17101

Females

6082

F55-59

6082

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16702

Females

5980

F55-59

5980

20M→21M

20.0 - 21.0 mi

Top 60%
×8stories
+106ft-24ft

Overall

16978

Females

6249

F55-59

6249

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

17523

Females

6649

F55-59

6649

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

18059

Females

7008

F55-59

7008

23M→24M

23.0 - 24.0 mi

Top 67%
×6stories
+12ft-82ft

Overall

19170

Females

7631

F55-59

7631

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19835

Females

8059

F55-59

8059

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

22903

Females

9603

F55-59

9603

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2stories
+22ft-21ft

Overall

23018

Females

9666

F55-59

9666

Passing Analysis

Category:
Athletes Passed
2017
Passed By
1807
Net Change
+210
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18526
5K → 10K243289-46#18526#18572
10K → 15K214169+45#18572#18527
15K → 20K231128+103#18527#18424
20K → Half4223+19#18424#18405
Half → 25K35835+323#18405#18082
25K → 30K354109+245#18082#17837
30K → 20M16272+90#17837#17747
20M → 21M12680+46#17747#17701
21M → 35K7148+23#17701#17678
35K → 23M107131-24#17678#17702
23M → 24M66106-40#17702#17742
24M → 40K26156-130#17742#17872
40K → 25.2M8155-147#17872#18019
25.2M → Finish9306-297#18019#18316
TOTALS20171807+210
📊

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