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BOSTON MARATHON 2025

Ciaran Cassidy

Bib: 6970•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 35%
Gender (Male)
#0 / 16105
Top 48%
Masters (Masters Men)
#0 / 10463
Top 37%
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:49
Rank: #5466
Start → 5K
20:49 | 6:42/mi
10K· 6.21 mi
41:29
Rank: #5162 (+304)
5K → 10K
20:40 | 6:39/mi
15K· 9.32 mi
1:02:23
Rank: #5199 (-37)
10K → 15K
20:54 | 6:44/mi
20K· 12.43 mi
1:23:41
Rank: #5316 (-117)
15K → 20K
21:18 | 6:51/mi
Half· 13.11 mi
1:28:18
Rank: #5334 (-18)
20K → Half
4:37 | 6:46/mi
25K· 15.53 mi
1:45:24
Rank: #5583 (-249)
Half → 25K
17:06 | 7:03/mi
30K· 18.64 mi
2:11:15
Rank: #6935 (-1352)
25K → 30K
25:51 | 8:19/mi
20M
2:23:31
Rank: #7575 (-640)
30K → 20M
12:16 | 9:02/mi
21M
2:33:17
Rank: #8126 (-551)
20M → 21M
9:46 | 9:46/mi
35K· 21.75 mi
2:39:28
Rank: #8330 (-204)
21M → 35K
6:11 | 8:16/mi
23M
2:51:17
Rank: #9055 (-725)
35K → 23M
11:49 | 9:26/mi
24M
2:59:10
Rank: #9075 (-20)
23M → 24M
7:53 | 7:53/mi
40K· 24.85 mi
3:08:43
Rank: #10014 (-939)
24M → 40K
9:33 | 11:10/mi
25.2M
3:11:33
Rank: #9943 (+71)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:19:04
Rank: #9848 (+95)
25.2M → Finish
7:31 | 7:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:18
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:50:46
Pace8:27 /mi
📊Positive Split: 25.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:5920:496:4220:49
6:42
-
10K
6.21 mi10:48:3941:296:4120:40
6:39
-0:03
15K
9.32 mi11:09:331:02:236:4220:54
6:44
+0:05
20K
12.43 mi11:30:511:23:416:4421:18
6:51
+0:07
Half
13.11 mi11:35:281:28:186:444:37
6:46
-0:05
25K
15.53 mi11:52:341:45:246:4717:06
7:03
+0:17
30K
18.64 mi12:18:252:11:157:0225:51
8:19
+1:16
20M
20.00 mi12:30:412:23:317:1112:16
9:02
+0:43
21M
21.00 mi12:40:272:33:177:189:46
9:46
+0:44
35K
21.75 mi12:46:382:39:287:206:11
8:16
-1:30
23M
23.00 mi12:58:272:51:177:2711:49
9:26
+1:10
24M
24.00 mi13:06:202:59:107:287:53
7:53
-1:33
40K
24.85 mi13:15:533:08:437:369:33
11:10
+3:17
25.2M
25.20 mi13:18:433:11:337:362:50
8:13
-2:57
Finish
26.22 mi13:26:143:19:047:367:31
7:23
-0:50

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

6:39 /mi

Average Pace

7:36 /mi

Slowest Pace

11:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:45:24

53% of race

Time at Steady Pace

50:16

25% of race

Time at Slower Pace

43:24

22% of race

Average Pace: 7:36 /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 mi10:27:5920:496:4220:49
6:42
#5466
10K
6.21 mi10:48:3941:296:4120:40
6:39
#5162
15K
9.32 mi11:09:331:02:236:4220:54
6:44
#5199
20K
12.43 mi11:30:511:23:416:4421:18
6:51
#5316
Half
13.11 mi11:35:281:28:186:444:37
6:46
#5334
25K
15.53 mi11:52:341:45:246:4717:06
7:03
#5583
30K
18.64 mi12:18:252:11:157:0225:51
8:19
#6935
20M
20.00 mi12:30:412:23:317:1112:16
9:02
#7575
21M
21.00 mi12:40:272:33:177:189:46
9:46
#8126
35K
21.75 mi12:46:382:39:287:206:11
8:16
#8330
23M
23.00 mi12:58:272:51:177:2711:49
9:26
#9055
24M
24.00 mi13:06:202:59:107:287:53
7:53
#9075
40K
24.85 mi13:15:533:08:437:369:33
11:10
#10014
25.2M
25.20 mi13:18:433:11:337:362:50
8:13
#9943
Finish
26.22 mi13:26:143:19:047:367:31
7:23
#9848
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi5466507650765350(Top 19%)4938(Top 31%)4938(Top 207%)
10K6.21 mi3.10 mi5162+3044805+2714805+2714915(Top 17%)4591(Top 29%)4591(Top 192%)
15K9.32 mi3.11 mi5199-374834-294834-295350(Top 19%)4938(Top 31%)4938(Top 207%)
20K12.43 mi3.11 mi5316-1174921-874921-875840(Top 21%)5310(Top 33%)5310(Top 223%)
Half13.11 mi0.68 mi5334-184936-154936-155890(Top 21%)5377(Top 33%)5377(Top 225%)
25K15.53 mi2.42 mi5583-2495130-1945130-1946663(Top 23%)5879(Top 37%)5879(Top 246%)
30K18.64 mi3.11 mi6935-13526160-10306160-103013615(Top 48%)9421(Top 58%)9421(Top 395%)
20M20.00 mi1.36 mi7575-6406570-4106570-41016896(Top 59%)10761(Top 67%)10761(Top 451%)
21M21.00 mi1.00 mi8126-5516886-3166886-31617302(Top 61%)10818(Top 67%)10818(Top 453%)
35K21.75 mi0.75 mi8330-2046992-1066992-10613984(Top 49%)9269(Top 58%)9269(Top 388%)
23M23.00 mi1.25 mi9055-7257365-3737365-37318380(Top 65%)11150(Top 69%)11150(Top 467%)
24M24.00 mi1.00 mi9075-207352+137352+1310417(Top 37%)7384(Top 46%)7384(Top 309%)
40K24.85 mi0.85 mi10014-9397809-4577809-45723481(Top 83%)13487(Top 84%)13487(Top 565%)
25.2M25.20 mi0.35 mi9943+717756+537756+537151(Top 25%)5441(Top 34%)5441(Top 228%)
Finish26.22 mi1.02 mi9848+957673+837673+838323(Top 29%)6099(Top 38%)6099(Top 256%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5350

Males

4938

M45-49

4938

5K→10K

3.1 - 6.2 mi

Top 17%
×5stories
+79ft-138ft

Overall

4915

Males

4591

M45-49

4591

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5350

Males

4938

M45-49

4938

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5840

Males

5310

M45-49

5310

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5890

Males

5377

M45-49

5377

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6663

Males

5879

M45-49

5879

25K→30K

15.5 - 18.6 mi

Top 48%
×9stories
+181ft-148ft

Overall

13615

Males

9421

M45-49

9421

30K→20M

18.6 - 20.0 mi

Top 59%
×5stories
+64ft-50ft

Overall

16896

Males

10761

M45-49

10761

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

17302

Males

10818

M45-49

10818

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

13984

Males

9269

M45-49

9269

35K→23M

21.8 - 23.0 mi

Top 65%
×5stories
+23ft-63ft

Overall

18380

Males

11150

M45-49

11150

23M→24M

23.0 - 24.0 mi

Top 37%
×6stories
+12ft-82ft

Overall

10417

Males

7384

M45-49

7384

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

23481

Males

13487

M45-49

13487

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7151

Males

5441

M45-49

5441

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

8323

Males

6099

M45-49

6099

Passing Analysis

Category:
Athletes Passed
1009*
Passed By
5389
Net Change
-4382
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5466
5K → 10K36864+304#5466#5162
10K → 15K122159-37#5162#5199
15K → 20K87204-117#5199#5316
20K → Half1937-18#5316#5334
Half → 25K53302-249#5334#5583
25K → 30K201372-1352#5583#6935
30K → 20M17657-640#6935#7575
20M → 21M16567-551#7575#8126
21M → 35K21225-204#8126#8330
35K → 23M23748-725#8330#9055
23M → 24M6383-20#9055#9075
24M → 40K3940-939#9075#10014
40K → 25.2M73*2+71#10014#9943
25.2M → Finish12429+95#9943#9848
TOTALS1009*5389-4382

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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