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BOSTON MARATHON 2025

Cassidy Girvin

Bib: 5608•M

VA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 7%
Division (M18-39)
#0 / 5642
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:51
Rank: #3025
Start → 5K
19:51 | 6:23/mi
10K· 6.21 mi
39:17
Rank: #2560 (+465)
5K → 10K
19:26 | 6:15/mi
15K· 9.32 mi
58:14
Rank: #2092 (+468)
10K → 15K
18:57 | 6:06/mi
20K· 12.43 mi
1:17:22
Rank: #1876 (+216)
15K → 20K
19:08 | 6:10/mi
Half· 13.11 mi
1:21:26
Rank: #1820 (+56)
20K → Half
4:04 | 5:58/mi
25K· 15.53 mi
1:36:08
Rank: #1637 (+183)
Half → 25K
14:42 | 6:04/mi
30K· 18.64 mi
1:55:26
Rank: #1450 (+187)
25K → 30K
19:18 | 6:13/mi
20M
2:04:02
Rank: #1394 (+56)
30K → 20M
8:36 | 6:20/mi
21M
2:10:44
Rank: #1356 (+38)
20M → 21M
6:42 | 6:42/mi
35K· 21.75 mi
2:15:23
Rank: #1334 (+22)
21M → 35K
4:39 | 6:13/mi
23M
2:23:29
Rank: #1309 (+25)
35K → 23M
8:06 | 6:28/mi
24M
2:29:50
Rank: #1297 (+12)
23M → 24M
6:21 | 6:21/mi
40K· 24.85 mi
2:35:09
Rank: #1256 (+41)
24M → 40K
5:19 | 6:13/mi
25.2M
2:37:32
Rank: #1241 (+15)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:43:54
Rank: #1242 (-1)
25.2M → Finish
6:22 | 6:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:26
Pace6:13 /mi
2nd Half
Distance13.11 mi
Time1:22:28
Pace6:17 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:5419:516:2319:51
6:23
-
10K
6.21 mi10:44:2039:176:1919:26
6:15
-0:08
15K
9.32 mi11:03:1758:146:1518:57
6:06
-0:09
20K
12.43 mi11:22:251:17:226:1419:08
6:10
+0:04
Half
13.11 mi11:26:291:21:266:134:04
5:58
-0:12
25K
15.53 mi11:41:111:36:086:1114:42
6:04
+0:06
30K
18.64 mi12:00:291:55:266:1219:18
6:13
+0:09
20M
20.00 mi12:09:052:04:026:128:36
6:20
+0:07
21M
21.00 mi12:15:472:10:446:146:42
6:42
+0:22
35K
21.75 mi12:20:262:15:236:144:39
6:13
-0:29
23M
23.00 mi12:28:322:23:296:148:06
6:28
+0:15
24M
24.00 mi12:34:532:29:506:156:21
6:21
-0:07
40K
24.85 mi12:40:122:35:096:155:19
6:13
-0:08
25.2M
25.20 mi12:42:352:37:326:152:23
6:55
+0:42
Finish
26.22 mi12:48:572:43:546:156:22
6:15
-0:40

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

5:58 /mi

Average Pace

6:15 /mi

Slowest Pace

6:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:34:49

94% of race

Time at Steady Pace

9:05

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:15 /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 mi10:24:5419:516:2319:51
6:23
#3025
10K
6.21 mi10:44:2039:176:1919:26
6:15
#2560
15K
9.32 mi11:03:1758:146:1518:57
6:06
#2092
20K
12.43 mi11:22:251:17:226:1419:08
6:10
#1876
Half
13.11 mi11:26:291:21:266:134:04
5:58
#1820
25K
15.53 mi11:41:111:36:086:1114:42
6:04
#1637
30K
18.64 mi12:00:291:55:266:1219:18
6:13
#1450
20M
20.00 mi12:09:052:04:026:128:36
6:20
#1394
21M
21.00 mi12:15:472:10:446:146:42
6:42
#1356
35K
21.75 mi12:20:262:15:236:144:39
6:13
#1334
23M
23.00 mi12:28:322:23:296:148:06
6:28
#1309
24M
24.00 mi12:34:532:29:506:156:21
6:21
#1297
40K
24.85 mi12:40:122:35:096:155:19
6:13
#1256
25.2M
25.20 mi12:42:352:37:326:152:23
6:55
#1241
Finish
26.22 mi12:48:572:43:546:156:22
6:15
#1242
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3025287228721368(Top 5%)1300(Top 8%)1300(Top 23%)
10K6.21 mi3.10 mi2560+4652438+4342438+4342160(Top 8%)2063(Top 13%)2063(Top 37%)
15K9.32 mi3.11 mi2092+4681995+4431995+4431368(Top 5%)1300(Top 8%)1300(Top 23%)
20K12.43 mi3.11 mi1876+2161787+2081787+2081404(Top 5%)1330(Top 8%)1330(Top 24%)
Half13.11 mi0.68 mi1820+561731+561731+561031(Top 4%)978(Top 6%)978(Top 17%)
25K15.53 mi2.42 mi1637+1831554+1771554+177977(Top 3%)921(Top 6%)921(Top 16%)
30K18.64 mi3.11 mi1450+1871372+1821372+182956(Top 3%)898(Top 6%)898(Top 16%)
20M20.00 mi1.36 mi1394+561317+551317+551033(Top 4%)975(Top 6%)975(Top 17%)
21M21.00 mi1.00 mi1356+381280+371280+371188(Top 4%)1122(Top 7%)1122(Top 20%)
35K21.75 mi0.75 mi1334+221258+221258+221267(Top 4%)1197(Top 7%)1197(Top 21%)
23M23.00 mi1.25 mi1309+251233+251233+251352(Top 5%)1271(Top 8%)1271(Top 23%)
24M24.00 mi1.00 mi1297+121221+121221+121463(Top 5%)1367(Top 8%)1367(Top 24%)
40K24.85 mi0.85 mi1256+411181+401181+40764(Top 3%)715(Top 4%)715(Top 13%)
25.2M25.20 mi0.35 mi1241+151166+151166+151226(Top 4%)1128(Top 7%)1128(Top 20%)
Finish26.22 mi1.02 mi1242-11167-11167-11674(Top 6%)1550(Top 10%)1550(Top 27%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1368

Males

1300

M18-39

1300

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2160

Males

2063

M18-39

2063

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1368

Males

1300

M18-39

1300

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1404

Males

1330

M18-39

1330

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1031

Males

978

M18-39

978

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

977

Males

921

M18-39

921

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

956

Males

898

M18-39

898

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1033

Males

975

M18-39

975

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1188

Males

1122

M18-39

1122

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1267

Males

1197

M18-39

1197

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1352

Males

1271

M18-39

1271

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1463

Males

1367

M18-39

1367

24M→40K

24.0 - 24.9 mi

Top 3%
×1story
+6ft-20ft

Overall

764

Males

715

M18-39

715

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1226

Males

1128

M18-39

1128

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1674

Males

1550

M18-39

1550

Passing Analysis

Category:
Athletes Passed
1894
Passed By
111
Net Change
+1783
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3025
5K → 10K47712+465#3025#2560
10K → 15K4680+468#2560#2092
15K → 20K2171+216#2092#1876
20K → Half560+56#1876#1820
Half → 25K1830+183#1820#1637
25K → 30K1925+187#1637#1450
30K → 20M648+56#1450#1394
20M → 21M4810+38#1394#1356
21M → 35K297+22#1356#1334
35K → 23M4823+25#1334#1309
23M → 24M3018+12#1309#1297
24M → 40K421+41#1297#1256
40K → 25.2M205+15#1256#1241
25.2M → Finish2021-1#1241#1242
TOTALS1894111+1783
📊

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