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BOSTON MARATHON 2025

Brendan Glynn

Bib: 27327•M

MA

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:13/mi
25:32
↑ 97↓ 3451.5%
10K· 6.21 mi
8:10/mi
50:53
↑ 79↓ 1380.4%
15K· 9.32 mi
8:24/mi
1:16:58
↑ 67↓ 78
20K· 12.43 mi
8:14/mi
1:42:33
↑ 106↓ 860.1%
Half· 13.11 mi
8:10/mi
1:48:07
↑ 19↓ 370.5%
25K· 15.53 mi
8:22/mi
2:08:25
↑ 66↓ 880.2%
30K· 18.64 mi
8:31/mi
2:34:52
↑ 181↓ 1480.2%
20M
8:51/mi
2:46:54
↑ 64↓ 500.2%
21M
8:55/mi
2:55:49
↑ 106↓ 241.6%
35K· 21.75 mi
8:28/mi
3:02:09
↑ 17↓ 861.7%
23M
8:47/mi
3:13:09
↑ 23↓ 630.6%
24M
8:33/mi
3:21:42
↓ 821.3%
40K· 24.85 mi
12:47/mi
3:32:38
↓ 200.3%
25.2M
8:54/mi
3:35:42
↑ 13↓ 160.2%
Finish· 26.22 mi
7:49/mi
3:43:40
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:07
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time1:55:33
Pace8:49 /mi
📊Positive Split: 6.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:3125:328:1325:32
8:13
-
10K
6.21 mi12:06:5250:538:1125:21
8:10
-0:03
15K
9.32 mi12:32:571:16:588:1526:05
8:24
+0:14
20K
12.43 mi12:58:321:42:338:1525:35
8:14
-0:10
Half
13.11 mi13:04:061:48:078:155:34
8:10
-0:04
25K
15.53 mi13:24:242:08:258:1620:18
8:22
+0:12
30K
18.64 mi13:50:512:34:528:1826:27
8:31
+0:09
20M
20.00 mi14:02:532:46:548:2112:02
8:51
+0:20
21M
21.00 mi14:11:482:55:498:228:55
8:55
+0:04
35K
21.75 mi14:18:083:02:098:236:20
8:28
-0:27
23M
23.00 mi14:29:083:13:098:2411:00
8:47
+0:19
24M
24.00 mi14:37:413:21:428:248:33
8:33
-0:14
40K
24.85 mi14:48:373:32:388:3310:56
12:47
+4:14
25.2M
25.20 mi14:51:413:35:428:343:04
8:54
-3:53
Finish
26.22 mi14:59:393:43:408:327:58
7:49
-1:05

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

7:49 /mi

Average Pace

8:32 /mi

Slowest Pace

12:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

7:58

4% of race

Time at Steady Pace

3:24:46

92% of race

Time at Slower Pace

10:56

5% of race

Average Pace: 8:32 /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 mi11:41:3125:328:1325:32
8:13
#18232
10K
6.21 mi12:06:5250:538:1125:21
8:10
#17897
15K
9.32 mi12:32:571:16:588:1526:05
8:24
#18142
20K
12.43 mi12:58:321:42:338:1525:35
8:14
#17693
Half
13.11 mi13:04:061:48:078:155:34
8:10
#17647
25K
15.53 mi13:24:242:08:258:1620:18
8:22
#17386
30K
18.64 mi13:50:512:34:528:1826:27
8:31
#16878
20M
20.00 mi14:02:532:46:548:2112:02
8:51
#16796
21M
21.00 mi14:11:482:55:498:228:55
8:55
#16530
35K
21.75 mi14:18:083:02:098:236:20
8:28
#16453
23M
23.00 mi14:29:083:13:098:2411:00
8:47
#16326
24M
24.00 mi14:37:413:21:428:248:33
8:33
#16225
40K
24.85 mi14:48:373:32:388:3310:56
12:47
#17113
25.2M
25.20 mi14:51:413:35:428:343:04
8:54
#17011
Finish
26.22 mi14:59:393:43:408:327:58
7:49
#16790
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi18232116981169818658(Top 66%)11903(Top 74%)11903(Top 211%)
10K6.21 mi3.10 mi17897+33511579+11911579+11917603(Top 62%)11489(Top 71%)11489(Top 204%)
15K9.32 mi3.11 mi18142-24511675-9611675-9618658(Top 66%)11903(Top 74%)11903(Top 211%)
20K12.43 mi3.11 mi17693+44911489+18611489+18616521(Top 58%)10973(Top 68%)10973(Top 194%)
Half13.11 mi0.68 mi17647+4611475+1411475+1416977(Top 60%)11168(Top 69%)11168(Top 198%)
25K15.53 mi2.42 mi17386+26111347+12811347+12816371(Top 58%)10810(Top 67%)10810(Top 192%)
30K18.64 mi3.11 mi16878+50811086+26111086+26114839(Top 52%)9988(Top 62%)9988(Top 177%)
20M20.00 mi1.36 mi16796+8211031+5511031+5515956(Top 56%)10349(Top 64%)10349(Top 183%)
21M21.00 mi1.00 mi16530+26610885+14610885+14613024(Top 46%)8862(Top 55%)8862(Top 157%)
35K21.75 mi0.75 mi16453+7710832+5310832+5315234(Top 54%)9833(Top 61%)9833(Top 174%)
23M23.00 mi1.25 mi16326+12710753+7910753+7915026(Top 53%)9641(Top 60%)9641(Top 171%)
24M24.00 mi1.00 mi16225+10110673+8010673+8014810(Top 52%)9503(Top 59%)9503(Top 168%)
40K24.85 mi0.85 mi17113-88811016-34311016-34326048(Top 92%)14813(Top 92%)14813(Top 263%)
25.2M25.20 mi0.35 mi17011+10210959+5710959+5711185(Top 39%)7591(Top 47%)7591(Top 135%)
Finish26.22 mi1.02 mi16790+22110845+11410845+11411564(Top 41%)7809(Top 48%)7809(Top 138%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21story building
+97ft-345ft

Overall

18658

Males

11903

M18-39

11903

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

17603

Males

11489

M18-39

11489

10K→15K

6.2 - 9.3 mi

Top 66%
×3story building
+67ft-78ft

Overall

18658

Males

11903

M18-39

11903

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

16521

Males

10973

M18-39

10973

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

16977

Males

11168

M18-39

11168

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

16371

Males

10810

M18-39

10810

25K→30K

15.5 - 18.6 mi

Top 52%
×9story building
+181ft-148ft

Overall

14839

Males

9988

M18-39

9988

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

15956

Males

10349

M18-39

10349

20M→21M

20.0 - 21.0 mi

Top 46%
×8story building
+106ft-24ft

Overall

13024

Males

8862

M18-39

8862

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

15234

Males

9833

M18-39

9833

35K→23M

21.8 - 23.0 mi

Top 53%
×5story building
+23ft-63ft

Overall

15026

Males

9641

M18-39

9641

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

14810

Males

9503

M18-39

9503

24M→40K

24.0 - 24.9 mi

Top 92%
×1story
+6ft-20ft

Overall

26048

Males

14813

M18-39

14813

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11185

Males

7591

M18-39

7591

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

11564

Males

7809

M18-39

7809

Passing Analysis

Category:
Athletes Passed
3107
Passed By
1665
Net Change
+1442
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18232
5K → 10K475140+335#18232#17897
10K → 15K110355-245#17897#18142
15K → 20K47526+449#18142#17693
20K → Half5812+46#17693#17647
Half → 25K30544+261#17647#17386
25K → 30K52618+508#17386#16878
30K → 20M13856+82#16878#16796
20M → 21M2715+266#16796#16530
21M → 35K10023+77#16530#16453
35K → 23M17447+127#16453#16326
23M → 24M13635+101#16326#16225
24M → 40K4892-888#16225#17113
40K → 25.2M1042+102#17113#17011
25.2M → Finish23110+221#17011#16790
TOTALS31071665+1442
📊

Passing Visuals

Category:
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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