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BOSTON MARATHON 2025

Courtney Aylaian

Bib: 28128•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 44%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:46
Rank: #20538
Start → 5K
26:46 | 8:37/mi
10K· 6.21 mi
52:43
Rank: #19736 (+802)
5K → 10K
25:57 | 8:21/mi
15K· 9.32 mi
1:17:59
Rank: #18831 (+905)
10K → 15K
25:16 | 8:08/mi
20K· 12.43 mi
1:43:39
Rank: #18253 (+578)
15K → 20K
25:40 | 8:16/mi
Half· 13.11 mi
1:49:09
Rank: #18133 (+120)
20K → Half
5:30 | 8:04/mi
25K· 15.53 mi
2:09:11
Rank: #17681 (+452)
Half → 25K
20:02 | 8:16/mi
30K· 18.64 mi
2:35:50
Rank: #17200 (+481)
25K → 30K
26:39 | 8:35/mi
20M
2:47:34
Rank: #17005 (+195)
30K → 20M
11:44 | 8:38/mi
21M
2:56:44
Rank: #16802 (+203)
20M → 21M
9:10 | 9:10/mi
35K· 21.75 mi
3:02:45
Rank: #16634 (+168)
21M → 35K
6:01 | 8:03/mi
23M
3:13:18
Rank: #16368 (+266)
35K → 23M
10:33 | 8:26/mi
24M
3:21:25
Rank: #16162 (+206)
23M → 24M
8:07 | 8:07/mi
40K· 24.85 mi
3:28:36
Rank: #16032 (+130)
24M → 40K
7:11 | 8:24/mi
25.2M
3:31:46
Rank: #15974 (+58)
40K → 25.2M
3:10 | 9:11/mi
Finish· 26.22 mi
3:39:58
Rank: #15858 (+116)
25.2M → Finish
8:12 | 8:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:09
Pace8:20 /mi
2nd Half
Distance13.11 mi
Time1:50:49
Pace8:27 /mi
📊Positive Split: 1.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:3226:468:3726:46
8:37
-
10K
6.21 mi12:12:2952:438:2925:57
8:21
-0:16
15K
9.32 mi12:37:451:17:598:2225:16
8:08
-0:13
20K
12.43 mi13:03:251:43:398:2025:40
8:16
+0:08
Half
13.11 mi13:08:551:49:098:205:30
8:04
-0:12
25K
15.53 mi13:28:572:09:118:1920:02
8:16
+0:12
30K
18.64 mi13:55:362:35:508:2226:39
8:35
+0:19
20M
20.00 mi14:07:202:47:348:2311:44
8:38
+0:03
21M
21.00 mi14:16:302:56:448:259:10
9:10
+0:32
35K
21.75 mi14:22:313:02:458:246:01
8:03
-1:07
23M
23.00 mi14:33:043:13:188:2410:33
8:26
+0:23
24M
24.00 mi14:41:113:21:258:248:07
8:07
-0:19
40K
24.85 mi14:48:223:28:368:247:11
8:24
+0:17
25.2M
25.20 mi14:51:323:31:468:243:10
9:11
+0:47
Finish
26.22 mi14:59:443:39:588:248:12
8:03
-1:08

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

8:03 /mi

Average Pace

8:24 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:27:38

94% of race

Time at Steady Pace

12:20

6% of race

Time at Slower Pace

0:00

0% 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 mi11:46:3226:468:3726:46
8:37
#20538
10K
6.21 mi12:12:2952:438:2925:57
8:21
#19736
15K
9.32 mi12:37:451:17:598:2225:16
8:08
#18831
20K
12.43 mi13:03:251:43:398:2025:40
8:16
#18253
Half
13.11 mi13:08:551:49:098:205:30
8:04
#18133
25K
15.53 mi13:28:572:09:118:1920:02
8:16
#17681
30K
18.64 mi13:55:362:35:508:2226:39
8:35
#17200
20M
20.00 mi14:07:202:47:348:2311:44
8:38
#17005
21M
21.00 mi14:16:302:56:448:259:10
9:10
#16802
35K
21.75 mi14:22:313:02:458:246:01
8:03
#16634
23M
23.00 mi14:33:043:13:188:2410:33
8:26
#16368
24M
24.00 mi14:41:113:21:258:248:07
8:07
#16162
40K
24.85 mi14:48:223:28:368:247:11
8:24
#16032
25.2M
25.20 mi14:51:323:31:468:243:10
9:11
#15974
Finish
26.22 mi14:59:443:39:588:248:12
8:03
#15858
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi205387826782616974(Top 60%)5718(Top 47%)5718(Top 105%)
10K6.21 mi3.10 mi19736+8027318+5087318+50818892(Top 67%)6817(Top 56%)6817(Top 125%)
15K9.32 mi3.11 mi18831+9056808+5106808+51016974(Top 60%)5718(Top 47%)5718(Top 105%)
20K12.43 mi3.11 mi18253+5786485+3236485+32316708(Top 59%)5609(Top 46%)5609(Top 103%)
Half13.11 mi0.68 mi18133+1206420+656420+6516418(Top 58%)5423(Top 44%)5423(Top 99%)
25K15.53 mi2.42 mi17681+4526162+2586162+25815694(Top 55%)5128(Top 42%)5128(Top 94%)
30K18.64 mi3.11 mi17200+4815936+2265936+22615264(Top 54%)5057(Top 41%)5057(Top 92%)
20M20.00 mi1.36 mi17005+1955845+915845+9114665(Top 52%)4864(Top 40%)4864(Top 89%)
21M21.00 mi1.00 mi16802+2035757+885757+8814465(Top 51%)4877(Top 40%)4877(Top 89%)
35K21.75 mi0.75 mi16634+1685683+745683+7412608(Top 44%)3971(Top 32%)3971(Top 73%)
23M23.00 mi1.25 mi16368+2665554+1295554+12912878(Top 45%)4210(Top 34%)4210(Top 77%)
24M24.00 mi1.00 mi16162+2065475+795475+7912075(Top 43%)3854(Top 32%)3854(Top 70%)
40K24.85 mi0.85 mi16032+1305421+545421+5412851(Top 45%)4371(Top 36%)4371(Top 80%)
25.2M25.20 mi0.35 mi15974+585402+195402+1912914(Top 45%)4472(Top 37%)4472(Top 82%)
Finish26.22 mi1.02 mi15858+1165363+395363+3913236(Top 47%)4576(Top 37%)4576(Top 84%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21stories
+97ft-345ft

Overall

16974

Females

5718

F18-39

5718

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

18892

Females

6817

F18-39

6817

10K→15K

6.2 - 9.3 mi

Top 60%
×3stories
+67ft-78ft

Overall

16974

Females

5718

F18-39

5718

15K→20K

9.3 - 12.4 mi

Top 59%
×5stories
+106ft-86ft

Overall

16708

Females

5609

F18-39

5609

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

16418

Females

5423

F18-39

5423

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

15694

Females

5128

F18-39

5128

25K→30K

15.5 - 18.6 mi

Top 54%
×9stories
+181ft-148ft

Overall

15264

Females

5057

F18-39

5057

30K→20M

18.6 - 20.0 mi

Top 52%
×5stories
+64ft-50ft

Overall

14665

Females

4864

F18-39

4864

20M→21M

20.0 - 21.0 mi

Top 51%
×8stories
+106ft-24ft

Overall

14465

Females

4877

F18-39

4877

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

12608

Females

3971

F18-39

3971

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

12878

Females

4210

F18-39

4210

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12075

Females

3854

F18-39

3854

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12851

Females

4371

F18-39

4371

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12914

Females

4472

F18-39

4472

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

13236

Females

4576

F18-39

4576

Passing Analysis

Category:
Athletes Passed
4905
Passed By
225
Net Change
+4680
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20538
5K → 10K87371+802#20538#19736
10K → 15K9116+905#19736#18831
15K → 20K59214+578#18831#18253
20K → Half1211+120#18253#18133
Half → 25K46311+452#18133#17681
25K → 30K51332+481#17681#17200
30K → 20M2049+195#17200#17005
20M → 21M22219+203#17005#16802
21M → 35K1713+168#16802#16634
35K → 23M27913+266#16634#16368
23M → 24M2104+206#16368#16162
24M → 40K1388+130#16162#16032
40K → 25.2M679+58#16032#15974
25.2M → Finish14125+116#15974#15858
TOTALS4905225+4680
📊

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