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BOSTON MARATHON 2025

Jennifer Thomson

Bib: 8071•F

ON

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0:00
/ mi
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Overall
#0 / 28404
Top 20%
Gender (Female)
#0 / 12228
Top 5%
Division (F18-39)
#0 / 5469
Top 10%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:45
Rank: #7835
Start → 5K
21:45 | 7:00/mi
10K· 6.21 mi
43:23
Rank: #7734 (+101)
5K → 10K
21:38 | 6:58/mi
15K· 9.32 mi
1:04:57
Rank: #7559 (+175)
10K → 15K
21:34 | 6:56/mi
20K· 12.43 mi
1:26:30
Rank: #7246 (+313)
15K → 20K
21:33 | 6:56/mi
Half· 13.11 mi
1:31:06
Rank: #7183 (+63)
20K → Half
4:36 | 6:45/mi
25K· 15.53 mi
1:47:58
Rank: #6932 (+251)
Half → 25K
16:52 | 6:57/mi
30K· 18.64 mi
2:10:30
Rank: #6676 (+256)
25K → 30K
22:32 | 7:15/mi
20M
2:20:21
Rank: #6501 (+175)
30K → 20M
9:51 | 7:15/mi
21M
2:28:11
Rank: #6417 (+84)
20M → 21M
7:50 | 7:50/mi
35K· 21.75 mi
2:33:22
Rank: #6329 (+88)
21M → 35K
5:11 | 6:56/mi
23M
2:42:18
Rank: #6153 (+176)
35K → 23M
8:56 | 7:08/mi
24M
2:49:15
Rank: #6021 (+132)
23M → 24M
6:57 | 6:57/mi
40K· 24.85 mi
2:55:22
Rank: #5925 (+96)
24M → 40K
6:07 | 7:09/mi
25.2M
2:58:06
Rank: #5886 (+39)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
3:05:11
Rank: #5791 (+95)
25.2M → Finish
7:05 | 6:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:06
Pace6:57 /mi
2nd Half
Distance13.11 mi
Time1:34:05
Pace7:11 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:29:5221:457:0021:45
7:00
-
10K
6.21 mi10:51:3043:236:5921:38
6:58
-0:02
15K
9.32 mi11:13:041:04:576:5821:34
6:56
-0:02
20K
12.43 mi11:34:371:26:306:5821:33
6:56
0:00
Half
13.11 mi11:39:131:31:066:574:36
6:45
-0:11
25K
15.53 mi11:56:051:47:586:5716:52
6:57
+0:12
30K
18.64 mi12:18:372:10:307:0022:32
7:15
+0:18
20M
20.00 mi12:28:282:20:217:019:51
7:15
0:00
21M
21.00 mi12:36:182:28:117:037:50
7:50
+0:35
35K
21.75 mi12:41:292:33:227:035:11
6:56
-0:54
23M
23.00 mi12:50:252:42:187:038:56
7:08
+0:12
24M
24.00 mi12:57:222:49:157:036:57
6:57
-0:11
40K
24.85 mi13:03:292:55:227:036:07
7:09
+0:12
25.2M
25.20 mi13:06:132:58:067:042:44
7:56
+0:47
Finish
26.22 mi13:13:183:05:117:047:05
6:57
-0:59

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

6:45 /mi

Average Pace

7:04 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:37

94% of race

Time at Steady Pace

10:34

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:04 /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 mi10:29:5221:457:0021:45
7:00
#7835
10K
6.21 mi10:51:3043:236:5921:38
6:58
#7734
15K
9.32 mi11:13:041:04:576:5821:34
6:56
#7559
20K
12.43 mi11:34:371:26:306:5821:33
6:56
#7246
Half
13.11 mi11:39:131:31:066:574:36
6:45
#7183
25K
15.53 mi11:56:051:47:586:5716:52
6:57
#6932
30K
18.64 mi12:18:372:10:307:0022:32
7:15
#6676
20M
20.00 mi12:28:282:20:217:019:51
7:15
#6501
21M
21.00 mi12:36:182:28:117:037:50
7:50
#6417
35K
21.75 mi12:41:292:33:227:035:11
6:56
#6329
23M
23.00 mi12:50:252:42:187:038:56
7:08
#6153
24M
24.00 mi12:57:222:49:157:036:57
6:57
#6021
40K
24.85 mi13:03:292:55:227:036:07
7:09
#5925
25.2M
25.20 mi13:06:132:58:067:042:44
7:56
#5886
Finish
26.22 mi13:13:183:05:117:047:05
6:57
#5791
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi78359239237257(Top 26%)796(Top 7%)796(Top 15%)
10K6.21 mi3.10 mi7734+101901+22901+227686(Top 27%)895(Top 7%)895(Top 16%)
15K9.32 mi3.11 mi7559+175858+43858+437257(Top 26%)796(Top 7%)796(Top 15%)
20K12.43 mi3.11 mi7246+313779+79779+796491(Top 23%)660(Top 5%)660(Top 12%)
Half13.11 mi0.68 mi7183+63760+19760+195723(Top 20%)485(Top 4%)485(Top 9%)
25K15.53 mi2.42 mi6932+251710+50710+506046(Top 21%)598(Top 5%)598(Top 11%)
30K18.64 mi3.11 mi6676+256697+13697+136193(Top 22%)723(Top 6%)723(Top 13%)
20M20.00 mi1.36 mi6501+175675+22675+225508(Top 19%)644(Top 5%)644(Top 12%)
21M21.00 mi1.00 mi6417+84673+2673+26399(Top 23%)1052(Top 9%)1052(Top 19%)
35K21.75 mi0.75 mi6329+88664+9664+94970(Top 17%)601(Top 5%)601(Top 11%)
23M23.00 mi1.25 mi6153+176644+20644+204540(Top 16%)546(Top 4%)546(Top 10%)
24M24.00 mi1.00 mi6021+132626+18626+184392(Top 15%)551(Top 5%)551(Top 10%)
40K24.85 mi0.85 mi5925+96620+6620+64825(Top 17%)721(Top 6%)721(Top 13%)
25.2M25.20 mi0.35 mi5886+39618+2618+25614(Top 20%)1077(Top 9%)1077(Top 20%)
Finish26.22 mi1.02 mi5791+956186185431(Top 19%)1023(Top 8%)1023(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7257

Females

796

F18-39

796

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7686

Females

895

F18-39

895

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7257

Females

796

F18-39

796

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6491

Females

660

F18-39

660

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5723

Females

485

F18-39

485

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

6046

Females

598

F18-39

598

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

6193

Females

723

F18-39

723

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5508

Females

644

F18-39

644

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6399

Females

1052

F18-39

1052

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4970

Females

601

F18-39

601

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4540

Females

546

F18-39

546

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

4392

Females

551

F18-39

551

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4825

Females

721

F18-39

721

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5614

Females

1077

F18-39

1077

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2stories
+22ft-21ft

Overall

5431

Females

1023

F18-39

1023

Passing Analysis

Category:
Athletes Passed
2432
Passed By
388
Net Change
+2044
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7835
5K → 10K253152+101#7835#7734
10K → 15K23257+175#7734#7559
15K → 20K32512+313#7559#7246
20K → Half630+63#7246#7183
Half → 25K26110+251#7183#6932
25K → 30K31963+256#6932#6676
30K → 20M18611+175#6676#6501
20M → 21M10824+84#6501#6417
21M → 35K957+88#6417#6329
35K → 23M18711+176#6329#6153
23M → 24M1397+132#6153#6021
24M → 40K1059+96#6021#5925
40K → 25.2M5011+39#5925#5886
25.2M → Finish10914+95#5886#5791
TOTALS2432388+2044
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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