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BOSTON MARATHON 2025

Leah Paraskoulakis

Bib: 31869•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken 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
8:56/mi
27:44
↑ 97↓ 3451.5%
10K· 6.21 mi
8:35/mi
54:25
↑ 79↓ 1380.4%
15K· 9.32 mi
8:53/mi
1:22:01
↑ 67↓ 78
20K· 12.43 mi
9:03/mi
1:50:08
↑ 106↓ 860.1%
Half· 13.11 mi
8:34/mi
1:55:59
↑ 19↓ 370.5%
25K· 15.53 mi
9:15/mi
2:18:25
↑ 66↓ 880.2%
30K· 18.64 mi
9:49/mi
2:48:54
↑ 181↓ 1480.2%
20M
9:36/mi
3:01:57
↑ 64↓ 500.2%
21M
9:58/mi
3:11:55
↑ 106↓ 241.6%
35K· 21.75 mi
9:39/mi
3:19:08
↑ 17↓ 861.7%
23M
9:57/mi
3:31:35
↑ 23↓ 630.6%
24M
10:03/mi
3:41:38
↓ 821.3%
40K· 24.85 mi
10:54/mi
3:50:57
↓ 200.3%
25.2M
12:08/mi
3:55:08
↑ 13↓ 160.2%
Finish· 26.22 mi
10:17/mi
4:05:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:59
Pace8:51 /mi
2nd Half
Distance13.11 mi
Time2:09:38
Pace9:53 /mi
📊Positive Split: 11.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:3927:448:5627:44
8:56
-
10K
6.21 mi12:17:2054:258:4526:41
8:35
-0:21
15K
9.32 mi12:44:561:22:018:4827:36
8:53
+0:18
20K
12.43 mi13:13:031:50:088:5228:07
9:03
+0:10
Half
13.11 mi13:18:541:55:598:515:51
8:34
-0:29
25K
15.53 mi13:41:202:18:258:5522:26
9:15
+0:41
30K
18.64 mi14:11:492:48:549:0430:29
9:49
+0:34
20M
20.00 mi14:24:523:01:579:0613:03
9:36
-0:13
21M
21.00 mi14:34:503:11:559:089:58
9:58
+0:22
35K
21.75 mi14:42:033:19:089:097:13
9:39
-0:19
23M
23.00 mi14:54:303:31:359:1212:27
9:57
+0:18
24M
24.00 mi15:04:333:41:389:1410:03
10:03
+0:06
40K
24.85 mi15:13:523:50:579:189:19
10:54
+0:51
25.2M
25.20 mi15:18:033:55:089:204:11
12:08
+1:14
Finish
26.22 mi15:28:324:05:379:2210:29
10:17
-1:51

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

8:34 /mi

Average Pace

9:22 /mi

Slowest Pace

12:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:59

47% of race

Time at Steady Pace

1:45:39

43% of race

Time at Slower Pace

23:59

10% of race

Average Pace: 9:22 /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 mi11:50:3927:448:5627:44
8:56
#22120
10K
6.21 mi12:17:2054:258:4526:41
8:35
#21213
15K
9.32 mi12:44:561:22:018:4827:36
8:53
#21265
20K
12.43 mi13:13:031:50:088:5228:07
9:03
#21233
Half
13.11 mi13:18:541:55:598:515:51
8:34
#21163
25K
15.53 mi13:41:202:18:258:5522:26
9:15
#21156
30K
18.64 mi14:11:492:48:549:0430:29
9:49
#21152
20M
20.00 mi14:24:523:01:579:0613:03
9:36
#21016
21M
21.00 mi14:34:503:11:559:089:58
9:58
#20827
35K
21.75 mi14:42:033:19:089:097:13
9:39
#20844
23M
23.00 mi14:54:303:31:359:1212:27
9:57
#20824
24M
24.00 mi15:04:333:41:389:1410:03
10:03
#20883
40K
24.85 mi15:13:523:50:579:189:19
10:54
#20970
25.2M
25.20 mi15:18:033:55:089:204:11
12:08
#21023
Finish
26.22 mi15:28:324:05:379:2210:29
10:17
#21140
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi221208694869421495(Top 76%)8275(Top 68%)8275(Top 151%)
10K6.21 mi3.10 mi21213+9078167+5278167+52720314(Top 72%)7647(Top 63%)7647(Top 140%)
15K9.32 mi3.11 mi21265-528182-158182-1521495(Top 76%)8275(Top 68%)8275(Top 151%)
20K12.43 mi3.11 mi21233+328162+208162+2021230(Top 75%)8168(Top 67%)8168(Top 149%)
Half13.11 mi0.68 mi21163+708119+438119+4319751(Top 70%)7339(Top 60%)7339(Top 134%)
25K15.53 mi2.42 mi21156+78129-108129-1020987(Top 74%)8095(Top 66%)8095(Top 148%)
30K18.64 mi3.11 mi21152+48170-418170-4121041(Top 74%)8250(Top 67%)8250(Top 151%)
20M20.00 mi1.36 mi21016+1368112+588112+5819649(Top 69%)7609(Top 62%)7609(Top 139%)
21M21.00 mi1.00 mi20827+1898025+878025+8718203(Top 64%)6907(Top 56%)6907(Top 126%)
35K21.75 mi0.75 mi20844-178057-328057-3220850(Top 73%)8420(Top 69%)8420(Top 154%)
23M23.00 mi1.25 mi20824+208064-78064-720308(Top 71%)8205(Top 67%)8205(Top 150%)
24M24.00 mi1.00 mi20883-598118-548118-5421504(Top 76%)8856(Top 72%)8856(Top 162%)
40K24.85 mi0.85 mi20970-878185-678185-6722911(Top 81%)9649(Top 79%)9649(Top 176%)
25.2M25.20 mi0.35 mi21023-538224-398224-3923507(Top 83%)9910(Top 81%)9910(Top 181%)
Finish26.22 mi1.02 mi21140-1178301-778301-7723765(Top 84%)10050(Top 82%)10050(Top 184%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

21495

Females

8275

F18-39

8275

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20314

Females

7647

F18-39

7647

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

21495

Females

8275

F18-39

8275

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

21230

Females

8168

F18-39

8168

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

19751

Females

7339

F18-39

7339

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

20987

Females

8095

F18-39

8095

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

21041

Females

8250

F18-39

8250

30K→20M

18.6 - 20.0 mi

Top 69%
×5story building
+64ft-50ft

Overall

19649

Females

7609

F18-39

7609

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18203

Females

6907

F18-39

6907

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20850

Females

8420

F18-39

8420

35K→23M

21.8 - 23.0 mi

Top 71%
×5story building
+23ft-63ft

Overall

20308

Females

8205

F18-39

8205

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

21504

Females

8856

F18-39

8856

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

22911

Females

9649

F18-39

9649

40K→25.2M

24.9 - 25.2 mi

Top 83%
×1story
+13ft-16ft

Overall

23507

Females

9910

F18-39

9910

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

23765

Females

10050

F18-39

10050

Passing Analysis

Category:
Athletes Passed
2399
Passed By
1419
Net Change
+980
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22120
5K → 10K94336+907#22120#21213
10K → 15K192244-52#21213#21265
15K → 20K208176+32#21265#21233
20K → Half8010+70#21233#21163
Half → 25K144137+7#21163#21156
25K → 30K207203+4#21156#21152
30K → 20M16832+136#21152#21016
20M → 21M21021+189#21016#20827
21M → 35K4966-17#20827#20844
35K → 23M10080+20#20844#20824
23M → 24M41100-59#20824#20883
24M → 40K25112-87#20883#20970
40K → 25.2M1467-53#20970#21023
25.2M → Finish18135-117#21023#21140
TOTALS23991419+980
📊

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