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BOSTON MARATHON 2025

Rosalyn Thomson

Bib: 11912•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 28%
Gender (Female)
#0 / 12228
Top 11%
Division (F18-39)
#0 / 5469
Top 21%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:42
Rank: #7718
Start → 5K
21:42 | 6:59/mi
10K· 6.21 mi
43:30
Rank: #7876 (-158)
5K → 10K
21:48 | 7:01/mi
15K· 9.32 mi
1:05:26
Rank: #7902 (-26)
10K → 15K
21:56 | 7:04/mi
20K· 12.43 mi
1:27:54
Rank: #7990 (-88)
15K → 20K
22:28 | 7:14/mi
Half· 13.11 mi
1:32:47
Rank: #8014 (-24)
20K → Half
4:53 | 7:09/mi
25K· 15.53 mi
1:50:30
Rank: #8022 (-8)
Half → 25K
17:43 | 7:18/mi
30K· 18.64 mi
2:14:09
Rank: #8003 (+19)
25K → 30K
23:39 | 7:37/mi
20M
2:24:51
Rank: #8072 (-69)
30K → 20M
10:42 | 7:52/mi
21M
2:33:09
Rank: #8081 (-9)
20M → 21M
8:18 | 8:18/mi
35K· 21.75 mi
2:38:41
Rank: #8039 (+42)
21M → 35K
5:32 | 7:24/mi
23M
2:48:35
Rank: #8059 (-20)
35K → 23M
9:54 | 7:54/mi
24M
2:56:10
Rank: #8026 (+33)
23M → 24M
7:35 | 7:35/mi
40K· 24.85 mi
3:02:53
Rank: #8048 (-22)
24M → 40K
6:43 | 7:51/mi
25.2M
3:05:45
Rank: #8026 (+22)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:13:25
Rank: #8041 (-15)
25.2M → Finish
7:40 | 7:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:47
Pace7:05 /mi
2nd Half
Distance13.11 mi
Time1:40:38
Pace7:41 /mi
📊Positive Split: 8.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:2521:426:5921:42
6:59
-
10K
6.21 mi11:12:1343:307:0021:48
7:01
+0:02
15K
9.32 mi11:34:091:05:267:0121:56
7:04
+0:03
20K
12.43 mi11:56:371:27:547:0422:28
7:14
+0:10
Half
13.11 mi12:01:301:32:477:054:53
7:09
-0:05
25K
15.53 mi12:19:131:50:307:0717:43
7:18
+0:09
30K
18.64 mi12:42:522:14:097:1223:39
7:37
+0:19
20M
20.00 mi12:53:342:24:517:1510:42
7:52
+0:15
21M
21.00 mi13:01:522:33:097:188:18
8:18
+0:26
35K
21.75 mi13:07:242:38:417:185:32
7:24
-0:54
23M
23.00 mi13:17:182:48:357:209:54
7:54
+0:30
24M
24.00 mi13:24:532:56:107:207:35
7:35
-0:19
40K
24.85 mi13:31:363:02:537:216:43
7:51
+0:16
25.2M
25.20 mi13:34:283:05:457:222:52
8:19
+0:28
Finish
26.22 mi13:42:083:13:257:237:40
7:31
-0:48

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

6:59 /mi

Average Pace

7:23 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:56

80% of race

Time at Steady Pace

27:19

14% of race

Time at Slower Pace

11:10

6% of race

Average Pace: 7:23 /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 mi10:50:2521:426:5921:42
6:59
#7718
10K
6.21 mi11:12:1343:307:0021:48
7:01
#7876
15K
9.32 mi11:34:091:05:267:0121:56
7:04
#7902
20K
12.43 mi11:56:371:27:547:0422:28
7:14
#7990
Half
13.11 mi12:01:301:32:477:054:53
7:09
#8014
25K
15.53 mi12:19:131:50:307:0717:43
7:18
#8022
30K
18.64 mi12:42:522:14:097:1223:39
7:37
#8003
20M
20.00 mi12:53:342:24:517:1510:42
7:52
#8072
21M
21.00 mi13:01:522:33:097:188:18
8:18
#8081
35K
21.75 mi13:07:242:38:417:185:32
7:24
#8039
23M
23.00 mi13:17:182:48:357:209:54
7:54
#8059
24M
24.00 mi13:24:532:56:107:207:35
7:35
#8026
40K
24.85 mi13:31:363:02:537:216:43
7:51
#8048
25.2M
25.20 mi13:34:283:05:457:222:52
8:19
#8026
Finish
26.22 mi13:42:083:13:257:237:40
7:31
#8041
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi77188948948054(Top 28%)1055(Top 9%)1055(Top 19%)
10K6.21 mi3.10 mi7876-158958-64958-648046(Top 28%)1025(Top 8%)1025(Top 19%)
15K9.32 mi3.11 mi7902-26962-4962-48054(Top 28%)1055(Top 9%)1055(Top 19%)
20K12.43 mi3.11 mi7990-881024-621024-628479(Top 30%)1307(Top 11%)1307(Top 24%)
Half13.11 mi0.68 mi8014-241028-41028-48780(Top 31%)1392(Top 11%)1392(Top 25%)
25K15.53 mi2.42 mi8022-81062-341062-348429(Top 30%)1392(Top 11%)1392(Top 25%)
30K18.64 mi3.11 mi8003+191112-501112-508537(Top 30%)1610(Top 13%)1610(Top 29%)
20M20.00 mi1.36 mi8072-691173-611173-619537(Top 34%)2226(Top 18%)2226(Top 41%)
21M21.00 mi1.00 mi8081-91206-331206-339229(Top 32%)2253(Top 18%)2253(Top 41%)
35K21.75 mi0.75 mi8039+421210-41210-47925(Top 28%)1642(Top 13%)1642(Top 30%)
23M23.00 mi1.25 mi8059-201268-581268-589351(Top 33%)2418(Top 20%)2418(Top 44%)
24M24.00 mi1.00 mi8026+331293-251293-258307(Top 29%)1999(Top 16%)1999(Top 37%)
40K24.85 mi0.85 mi8048-221330-371330-379189(Top 32%)2533(Top 21%)2533(Top 46%)
25.2M25.20 mi0.35 mi8026+221331-11331-17756(Top 27%)1945(Top 16%)1945(Top 36%)
Finish26.22 mi1.02 mi8041-151367-361367-369367(Top 33%)2695(Top 22%)2695(Top 49%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

8054

Females

1055

F18-39

1055

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

8046

Females

1025

F18-39

1025

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

8054

Females

1055

F18-39

1055

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

8479

Females

1307

F18-39

1307

20K→Half

12.4 - 13.1 mi

Top 31%
×2stories
+19ft-37ft

Overall

8780

Females

1392

F18-39

1392

Half→25K

13.1 - 15.5 mi

Top 30%
×4stories
+66ft-88ft

Overall

8429

Females

1392

F18-39

1392

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8537

Females

1610

F18-39

1610

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

9537

Females

2226

F18-39

2226

20M→21M

20.0 - 21.0 mi

Top 32%
×8stories
+106ft-24ft

Overall

9229

Females

2253

F18-39

2253

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7925

Females

1642

F18-39

1642

35K→23M

21.8 - 23.0 mi

Top 33%
×5stories
+23ft-63ft

Overall

9351

Females

2418

F18-39

2418

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8307

Females

1999

F18-39

1999

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

9189

Females

2533

F18-39

2533

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7756

Females

1945

F18-39

1945

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

9367

Females

2695

F18-39

2695

Passing Analysis

Category:
Athletes Passed
1347
Passed By
1670
Net Change
-323
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7718
5K → 10K134292-158#7718#7876
10K → 15K134160-26#7876#7902
15K → 20K106194-88#7902#7990
20K → Half2347-24#7990#8014
Half → 25K122130-8#8014#8022
25K → 30K200181+19#8022#8003
30K → 20M81150-69#8003#8072
20M → 21M98107-9#8072#8081
21M → 35K7735+42#8081#8039
35K → 23M105125-20#8039#8059
23M → 24M8754+33#8059#8026
24M → 40K6284-22#8026#8048
40K → 25.2M4018+22#8048#8026
25.2M → Finish7893-15#8026#8041
TOTALS13471670-323
📊

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