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BOSTON MARATHON 2025

Isabelle Pilson

Bib: 13458•F

UT

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 24%
Gender (Female)
#0 / 12228
Top 8%
Division (F18-39)
#0 / 5469
Top 15%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:58
Rank: #8397
Start → 5K
21:58 | 7:04/mi
10K· 6.21 mi
44:00
Rank: #8519 (-122)
5K → 10K
22:02 | 7:06/mi
15K· 9.32 mi
1:06:02
Rank: #8373 (+146)
10K → 15K
22:02 | 7:06/mi
20K· 12.43 mi
1:29:01
Rank: #8665 (-292)
15K → 20K
22:59 | 7:24/mi
Half· 13.11 mi
1:33:50
Rank: #8616 (+49)
20K → Half
4:49 | 7:04/mi
25K· 15.53 mi
1:51:22
Rank: #8419 (+197)
Half → 25K
17:32 | 7:14/mi
30K· 18.64 mi
2:14:22
Rank: #8093 (+326)
25K → 30K
23:00 | 7:24/mi
20M
2:24:32
Rank: #7953 (+140)
30K → 20M
10:10 | 7:29/mi
21M
2:32:21
Rank: #7786 (+167)
20M → 21M
7:49 | 7:49/mi
35K· 21.75 mi
2:37:41
Rank: #7679 (+107)
21M → 35K
5:20 | 7:08/mi
23M
2:46:44
Rank: #7454 (+225)
35K → 23M
9:03 | 7:14/mi
24M
2:53:51
Rank: #7303 (+151)
23M → 24M
7:07 | 7:07/mi
40K· 24.85 mi
3:00:01
Rank: #7172 (+131)
24M → 40K
6:10 | 7:13/mi
25.2M
3:02:41
Rank: #7101 (+71)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:09:36
Rank: #6941 (+160)
25.2M → Finish
6:55 | 6:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:50
Pace7:09 /mi
2nd Half
Distance13.11 mi
Time1:35:46
Pace7:18 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:3021:587:0421:58
7:04
-
10K
6.21 mi11:12:3244:007:0522:02
7:06
+0:02
15K
9.32 mi11:34:341:06:027:0522:02
7:06
0:00
20K
12.43 mi11:57:331:29:017:1022:59
7:24
+0:18
Half
13.11 mi12:02:221:33:507:094:49
7:04
-0:20
25K
15.53 mi12:19:541:51:227:1017:32
7:14
+0:10
30K
18.64 mi12:42:542:14:227:1223:00
7:24
+0:10
20M
20.00 mi12:53:042:24:327:1410:10
7:29
+0:05
21M
21.00 mi13:00:532:32:217:157:49
7:49
+0:20
35K
21.75 mi13:06:132:37:417:155:20
7:08
-0:41
23M
23.00 mi13:15:162:46:447:159:03
7:14
+0:06
24M
24.00 mi13:22:232:53:517:157:07
7:07
-0:07
40K
24.85 mi13:28:333:00:017:156:10
7:13
+0:06
25.2M
25.20 mi13:31:133:02:417:152:40
7:44
+0:31
Finish
26.22 mi13:38:083:09:367:146:55
6:47
-0:57

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

6:47 /mi

Average Pace

7:14 /mi

Slowest Pace

7:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:57

89% of race

Time at Steady Pace

20:39

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:14 /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 mi10:50:3021:587:0421:58
7:04
#8397
10K
6.21 mi11:12:3244:007:0522:02
7:06
#8519
15K
9.32 mi11:34:341:06:027:0522:02
7:06
#8373
20K
12.43 mi11:57:331:29:017:1022:59
7:24
#8665
Half
13.11 mi12:02:221:33:507:094:49
7:04
#8616
25K
15.53 mi12:19:541:51:227:1017:32
7:14
#8419
30K
18.64 mi12:42:542:14:227:1223:00
7:24
#8093
20M
20.00 mi12:53:042:24:327:1410:10
7:29
#7953
21M
21.00 mi13:00:532:32:217:157:49
7:49
#7786
35K
21.75 mi13:06:132:37:417:155:20
7:08
#7679
23M
23.00 mi13:15:162:46:447:159:03
7:14
#7454
24M
24.00 mi13:22:232:53:517:157:07
7:07
#7303
40K
24.85 mi13:28:333:00:017:156:10
7:13
#7172
25.2M
25.20 mi13:31:133:02:417:152:40
7:44
#7101
Finish
26.22 mi13:38:083:09:367:146:55
6:47
#6941
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8397113211328293(Top 29%)1154(Top 9%)1154(Top 21%)
10K6.21 mi3.10 mi8519-1221192-601192-608625(Top 30%)1227(Top 10%)1227(Top 22%)
15K9.32 mi3.11 mi8373+1461148+441148+448293(Top 29%)1154(Top 9%)1154(Top 21%)
20K12.43 mi3.11 mi8665-2921279-1311279-1319895(Top 35%)1905(Top 16%)1905(Top 35%)
Half13.11 mi0.68 mi8616+491272+71272+78049(Top 28%)1093(Top 9%)1093(Top 20%)
25K15.53 mi2.42 mi8419+1971209+631209+637846(Top 28%)1155(Top 9%)1155(Top 21%)
30K18.64 mi3.11 mi8093+3261152+571152+577081(Top 25%)1038(Top 8%)1038(Top 19%)
20M20.00 mi1.36 mi7953+1401129+231129+236894(Top 24%)1105(Top 9%)1105(Top 20%)
21M21.00 mi1.00 mi7786+1671089+401089+406315(Top 22%)1032(Top 8%)1032(Top 19%)
35K21.75 mi0.75 mi7679+1071075+141075+146189(Top 22%)979(Top 8%)979(Top 18%)
23M23.00 mi1.25 mi7454+2251041+341041+345076(Top 18%)697(Top 6%)697(Top 13%)
24M24.00 mi1.00 mi7303+1511021+201021+205334(Top 19%)835(Top 7%)835(Top 15%)
40K24.85 mi0.85 mi7172+1311003+181003+185152(Top 18%)835(Top 7%)835(Top 15%)
25.2M25.20 mi0.35 mi7101+71993+10993+104605(Top 16%)752(Top 6%)752(Top 14%)
Finish26.22 mi1.02 mi6941+160969+24969+244463(Top 16%)679(Top 6%)679(Top 12%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21stories
+97ft-345ft

Overall

8293

Females

1154

F18-39

1154

5K→10K

3.1 - 6.2 mi

Top 30%
×5stories
+79ft-138ft

Overall

8625

Females

1227

F18-39

1227

10K→15K

6.2 - 9.3 mi

Top 29%
×3stories
+67ft-78ft

Overall

8293

Females

1154

F18-39

1154

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9895

Females

1905

F18-39

1905

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

8049

Females

1093

F18-39

1093

Half→25K

13.1 - 15.5 mi

Top 28%
×4stories
+66ft-88ft

Overall

7846

Females

1155

F18-39

1155

25K→30K

15.5 - 18.6 mi

Top 25%
×9stories
+181ft-148ft

Overall

7081

Females

1038

F18-39

1038

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6894

Females

1105

F18-39

1105

20M→21M

20.0 - 21.0 mi

Top 22%
×8stories
+106ft-24ft

Overall

6315

Females

1032

F18-39

1032

21M→35K

21.0 - 21.8 mi

Top 22%
×7stories
+17ft-86ft

Overall

6189

Females

979

F18-39

979

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

5076

Females

697

F18-39

697

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5334

Females

835

F18-39

835

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5152

Females

835

F18-39

835

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4605

Females

752

F18-39

752

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4463

Females

679

F18-39

679

Passing Analysis

Category:
Athletes Passed
2388
Passed By
932
Net Change
+1456
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8397
5K → 10K152274-122#8397#8519
10K → 15K23185+146#8519#8373
15K → 20K92384-292#8373#8665
20K → Half6314+49#8665#8616
Half → 25K23336+197#8616#8419
25K → 30K37044+326#8419#8093
30K → 20M17131+140#8093#7953
20M → 21M19023+167#7953#7786
21M → 35K1136+107#7786#7679
35K → 23M23712+225#7679#7454
23M → 24M1576+151#7454#7303
24M → 40K1387+131#7303#7172
40K → 25.2M710+71#7172#7101
25.2M → Finish17010+160#7101#6941
TOTALS2388932+1456
📊

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