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BOSTON MARATHON 2025

Gillian Thomas

Bib: 16461•F

WI

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 49%
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
24:19
Rank: #15077
Start → 5K
24:19 | 7:50/mi
10K· 6.21 mi
48:43
Rank: #15162 (-85)
5K → 10K
24:24 | 7:51/mi
15K· 9.32 mi
1:13:09
Rank: #15069 (+93)
10K → 15K
24:26 | 7:52/mi
20K· 12.43 mi
1:38:15
Rank: #15154 (-85)
15K → 20K
25:06 | 8:05/mi
Half· 13.11 mi
1:43:49
Rank: #15273 (-119)
20K → Half
5:34 | 8:10/mi
25K· 15.53 mi
2:04:19
Rank: #15564 (-291)
Half → 25K
20:30 | 8:27/mi
30K· 18.64 mi
2:32:07
Rank: #15945 (-381)
25K → 30K
27:48 | 8:57/mi
20M
2:44:42
Rank: #16106 (-161)
30K → 20M
12:35 | 9:16/mi
21M
2:54:37
Rank: #16183 (-77)
20M → 21M
9:55 | 9:55/mi
35K· 21.75 mi
3:01:26
Rank: #16252 (-69)
21M → 35K
6:49 | 9:07/mi
23M
3:13:36
Rank: #16449 (-197)
35K → 23M
12:10 | 9:43/mi
24M
3:23:08
Rank: #16650 (-201)
23M → 24M
9:32 | 9:32/mi
40K· 24.85 mi
3:31:31
Rank: #16809 (-159)
24M → 40K
8:23 | 9:48/mi
25.2M
3:35:09
Rank: #16858 (-49)
40K → 25.2M
3:38 | 10:32/mi
Finish· 26.22 mi
3:44:24
Rank: #16993 (-135)
25.2M → Finish
9:15 | 9:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:49
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time2:00:35
Pace9:12 /mi
📊Positive Split: 16.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:1224:197:5024:19
7:50
-
10K
6.21 mi11:22:3648:437:5024:24
7:51
+0:01
15K
9.32 mi11:47:021:13:097:5124:26
7:52
+0:01
20K
12.43 mi12:12:081:38:157:5425:06
8:05
+0:13
Half
13.11 mi12:17:421:43:497:555:34
8:10
+0:05
25K
15.53 mi12:38:122:04:198:0020:30
8:27
+0:17
30K
18.64 mi13:06:002:32:078:1027:48
8:57
+0:30
20M
20.00 mi13:18:352:44:428:1412:35
9:16
+0:19
21M
21.00 mi13:28:302:54:378:199:55
9:55
+0:39
35K
21.75 mi13:35:193:01:268:216:49
9:07
-0:48
23M
23.00 mi13:47:293:13:368:2512:10
9:43
+0:36
24M
24.00 mi13:57:013:23:088:289:32
9:32
-0:11
40K
24.85 mi14:05:243:31:318:318:23
9:48
+0:16
25.2M
25.20 mi14:09:023:35:098:323:38
10:32
+0:44
Finish
26.22 mi14:18:173:44:248:349:15
9:05
-1:27

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

7:50 /mi

Average Pace

8:34 /mi

Slowest Pace

10:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:19

55% of race

Time at Steady Pace

56:27

25% of race

Time at Slower Pace

43:38

19% of race

Average Pace: 8:34 /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 mi10:58:1224:197:5024:19
7:50
#15077
10K
6.21 mi11:22:3648:437:5024:24
7:51
#15162
15K
9.32 mi11:47:021:13:097:5124:26
7:52
#15069
20K
12.43 mi12:12:081:38:157:5425:06
8:05
#15154
Half
13.11 mi12:17:421:43:497:555:34
8:10
#15273
25K
15.53 mi12:38:122:04:198:0020:30
8:27
#15564
30K
18.64 mi13:06:002:32:078:1027:48
8:57
#15945
20M
20.00 mi13:18:352:44:428:1412:35
9:16
#16106
21M
21.00 mi13:28:302:54:378:199:55
9:55
#16183
35K
21.75 mi13:35:193:01:268:216:49
9:07
#16252
23M
23.00 mi13:47:293:13:368:2512:10
9:43
#16449
24M
24.00 mi13:57:013:23:088:289:32
9:32
#16650
40K
24.85 mi14:05:243:31:318:318:23
9:48
#16809
25.2M
25.20 mi14:09:023:35:098:323:38
10:32
#16858
Finish
26.22 mi14:18:173:44:248:349:15
9:05
#16993
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi150774579457914969(Top 53%)4566(Top 37%)4566(Top 83%)
10K6.21 mi3.10 mi15162-854643-644643-6415318(Top 54%)4738(Top 39%)4738(Top 87%)
15K9.32 mi3.11 mi15069+934598+454598+4514969(Top 53%)4566(Top 37%)4566(Top 83%)
20K12.43 mi3.11 mi15154-854671-734671-7315509(Top 55%)4920(Top 40%)4920(Top 90%)
Half13.11 mi0.68 mi15273-1194738-674738-6717075(Top 60%)5813(Top 48%)5813(Top 106%)
25K15.53 mi2.42 mi15564-2914923-1854923-18516927(Top 60%)5816(Top 48%)5816(Top 106%)
30K18.64 mi3.11 mi15945-3815191-2685191-26817413(Top 61%)6253(Top 51%)6253(Top 114%)
20M20.00 mi1.36 mi16106-1615328-1375328-13718100(Top 64%)6769(Top 55%)6769(Top 124%)
21M21.00 mi1.00 mi16183-775402-745402-7417989(Top 63%)6783(Top 55%)6783(Top 124%)
35K21.75 mi0.75 mi16252-695465-635465-6318787(Top 66%)7338(Top 60%)7338(Top 134%)
23M23.00 mi1.25 mi16449-1975599-1345599-13419511(Top 69%)7789(Top 64%)7789(Top 142%)
24M24.00 mi1.00 mi16650-2015744-1455744-14519739(Top 69%)7946(Top 65%)7946(Top 145%)
40K24.85 mi0.85 mi16809-1595877-1335877-13319831(Top 70%)8055(Top 66%)8055(Top 147%)
25.2M25.20 mi0.35 mi16858-495923-465923-4619154(Top 67%)7709(Top 63%)7709(Top 141%)
Finish26.22 mi1.02 mi16993-1356012-896012-8919419(Top 68%)7819(Top 64%)7819(Top 143%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21stories
+97ft-345ft

Overall

14969

Females

4566

F18-39

4566

5K→10K

3.1 - 6.2 mi

Top 54%
×5stories
+79ft-138ft

Overall

15318

Females

4738

F18-39

4738

10K→15K

6.2 - 9.3 mi

Top 53%
×3stories
+67ft-78ft

Overall

14969

Females

4566

F18-39

4566

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

15509

Females

4920

F18-39

4920

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

17075

Females

5813

F18-39

5813

Half→25K

13.1 - 15.5 mi

Top 60%
×4stories
+66ft-88ft

Overall

16927

Females

5816

F18-39

5816

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

17413

Females

6253

F18-39

6253

30K→20M

18.6 - 20.0 mi

Top 64%
×5stories
+64ft-50ft

Overall

18100

Females

6769

F18-39

6769

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

17989

Females

6783

F18-39

6783

21M→35K

21.0 - 21.8 mi

Top 66%
×7stories
+17ft-86ft

Overall

18787

Females

7338

F18-39

7338

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

19511

Females

7789

F18-39

7789

23M→24M

23.0 - 24.0 mi

Top 69%
×6stories
+12ft-82ft

Overall

19739

Females

7946

F18-39

7946

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19831

Females

8055

F18-39

8055

40K→25.2M

24.9 - 25.2 mi

Top 67%
×1story
+13ft-16ft

Overall

19154

Females

7709

F18-39

7709

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2stories
+22ft-21ft

Overall

19419

Females

7819

F18-39

7819

Passing Analysis

Category:
Athletes Passed
1317
Passed By
3233
Net Change
-1916
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15077
5K → 10K248333-85#15077#15162
10K → 15K255162+93#15162#15069
15K → 20K186271-85#15069#15154
20K → Half13132-119#15154#15273
Half → 25K99390-291#15273#15564
25K → 30K129510-381#15564#15945
30K → 20M70231-161#15945#16106
20M → 21M81158-77#16106#16183
21M → 35K44113-69#16183#16252
35K → 23M67264-197#16252#16449
23M → 24M25226-201#16449#16650
24M → 40K44203-159#16650#16809
40K → 25.2M2574-49#16809#16858
25.2M → Finish31166-135#16858#16993
TOTALS13173233-1916
📊

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