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BOSTON MARATHON 2025

Matthew Flagg

Bib: 28509•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
10:15/mi
31:50
↑ 97↓ 3451.5%
10K· 6.21 mi
10:16/mi
1:03:44
↑ 79↓ 1380.4%
15K· 9.32 mi
10:23/mi
1:35:59
↑ 67↓ 78
20K· 12.43 mi
10:47/mi
2:09:29
↑ 106↓ 860.1%
Half· 13.11 mi
10:35/mi
2:16:42
↑ 19↓ 370.5%
25K· 15.53 mi
11:54/mi
2:45:32
↑ 66↓ 880.2%
30K· 18.64 mi
13:39/mi
3:27:56
↑ 181↓ 1480.2%
20M
14:17/mi
3:47:20
↑ 64↓ 500.2%
21M
15:11/mi
4:02:31
↑ 106↓ 241.6%
35K· 21.75 mi
13:55/mi
4:12:56
↑ 17↓ 861.7%
23M
13:58/mi
4:30:25
↑ 23↓ 630.6%
24M
12:53/mi
4:43:18
↓ 821.3%
40K· 24.85 mi
12:26/mi
4:53:56
↓ 200.3%
25.2M
14:30/mi
4:58:56
↑ 13↓ 160.2%
Finish· 26.22 mi
9:59/mi
5:09:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:16:42
Pace10:26 /mi
2nd Half
Distance13.11 mi
Time2:52:24
Pace13:09 /mi
📊Positive Split: 26.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:1631:5010:1531:50
10:15
-
10K
6.21 mi12:27:101:03:4410:1531:54
10:16
+0:01
15K
9.32 mi12:59:251:35:5910:1832:15
10:23
+0:07
20K
12.43 mi13:32:552:09:2910:2533:30
10:47
+0:24
Half
13.11 mi13:40:082:16:4210:267:13
10:35
-0:12
25K
15.53 mi14:08:582:45:3210:3928:50
11:54
+1:19
30K
18.64 mi14:51:223:27:5611:0942:24
13:39
+1:45
20M
20.00 mi15:10:463:47:2011:2219:24
14:17
+0:38
21M
21.00 mi15:25:574:02:3111:3315:11
15:11
+0:54
35K
21.75 mi15:36:224:12:5611:3810:25
13:55
-1:16
23M
23.00 mi15:53:514:30:2511:4517:29
13:58
+0:03
24M
24.00 mi16:06:444:43:1811:4812:53
12:53
-1:05
40K
24.85 mi16:17:224:53:5611:5010:38
12:26
-0:27
25.2M
25.20 mi16:22:224:58:5611:525:00
14:30
+2:04
Finish
26.22 mi16:32:325:09:0611:4810:10
9:59
-4:31

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

9:59 /mi

Average Pace

11:48 /mi

Slowest Pace

15:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:26:52

48% of race

Time at Steady Pace

52:21

17% of race

Time at Slower Pace

1:49:53

36% of race

Average Pace: 11:47 /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 mi11:55:1631:5010:1531:50
10:15
#26186
10K
6.21 mi12:27:101:03:4410:1531:54
10:16
#26019
15K
9.32 mi12:59:251:35:5910:1832:15
10:23
#25910
20K
12.43 mi13:32:552:09:2910:2533:30
10:47
#25837
Half
13.11 mi13:40:082:16:4210:267:13
10:35
#25850
25K
15.53 mi14:08:582:45:3210:3928:50
11:54
#25973
30K
18.64 mi14:51:223:27:5611:0942:24
13:39
#26314
20M
20.00 mi15:10:463:47:2011:2219:24
14:17
#26479
21M
21.00 mi15:25:574:02:3111:3315:11
15:11
#26535
35K
21.75 mi15:36:224:12:5611:3810:25
13:55
#26614
23M
23.00 mi15:53:514:30:2511:4517:29
13:58
#26674
24M
24.00 mi16:06:444:43:1811:4812:53
12:53
#26696
40K
24.85 mi16:17:224:53:5611:5010:38
12:26
#26673
25.2M
25.20 mi16:22:224:58:5611:525:00
14:30
#26683
Finish
26.22 mi16:32:325:09:0611:4810:10
9:59
#26597
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi26186152591525925730(Top 91%)15030(Top 93%)15030(Top 266%)
10K6.21 mi3.10 mi26019+16715165+9415165+9425858(Top 91%)15078(Top 94%)15078(Top 267%)
15K9.32 mi3.11 mi25910+10915118+4715118+4725730(Top 91%)15030(Top 93%)15030(Top 266%)
20K12.43 mi3.11 mi25837+7315074+4415074+4425686(Top 90%)14988(Top 93%)14988(Top 266%)
Half13.11 mi0.68 mi25850-1315080-615080-625923(Top 91%)15080(Top 94%)15080(Top 267%)
25K15.53 mi2.42 mi25973-12315124-4415124-4426327(Top 93%)15217(Top 94%)15217(Top 270%)
30K18.64 mi3.11 mi26314-34115255-13115255-13127247(Top 96%)15550(Top 97%)15550(Top 276%)
20M20.00 mi1.36 mi26479-16515305-5015305-5027485(Top 97%)15605(Top 97%)15605(Top 277%)
21M21.00 mi1.00 mi26535-5615323-1815323-1827303(Top 96%)15505(Top 96%)15505(Top 275%)
35K21.75 mi0.75 mi26614-7915345-2215345-2227641(Top 97%)15643(Top 97%)15643(Top 277%)
23M23.00 mi1.25 mi26674-6015351-615351-627296(Top 96%)15473(Top 96%)15473(Top 274%)
24M24.00 mi1.00 mi26696-2215361-1015361-1026721(Top 94%)15161(Top 94%)15161(Top 269%)
40K24.85 mi0.85 mi26673+2315342+1915342+1925586(Top 90%)14577(Top 91%)14577(Top 258%)
25.2M25.20 mi0.35 mi26683-1015345-315345-326746(Top 94%)15138(Top 94%)15138(Top 268%)
Finish26.22 mi1.02 mi26597+8615304+4115304+4122866(Top 81%)13214(Top 82%)13214(Top 234%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21story building
+97ft-345ft

Overall

25730

Males

15030

M18-39

15030

5K→10K

3.1 - 6.2 mi

Top 91%
×5story building
+79ft-138ft

Overall

25858

Males

15078

M18-39

15078

10K→15K

6.2 - 9.3 mi

Top 91%
×3story building
+67ft-78ft

Overall

25730

Males

15030

M18-39

15030

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

25686

Males

14988

M18-39

14988

20K→Half

12.4 - 13.1 mi

Top 91%
×2story building
+19ft-37ft

Overall

25923

Males

15080

M18-39

15080

Half→25K

13.1 - 15.5 mi

Top 93%
×4story building
+66ft-88ft

Overall

26327

Males

15217

M18-39

15217

25K→30K

15.5 - 18.6 mi

Top 96%
×9story building
+181ft-148ft

Overall

27247

Males

15550

M18-39

15550

30K→20M

18.6 - 20.0 mi

Top 97%
×5story building
+64ft-50ft

Overall

27485

Males

15605

M18-39

15605

20M→21M

20.0 - 21.0 mi

Top 96%
×8story building
+106ft-24ft

Overall

27303

Males

15505

M18-39

15505

21M→35K

21.0 - 21.8 mi

Top 97%
×7story building
+17ft-86ft

Overall

27641

Males

15643

M18-39

15643

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

27296

Males

15473

M18-39

15473

23M→24M

23.0 - 24.0 mi

Top 94%
×6story building
+12ft-82ft

Overall

26721

Males

15161

M18-39

15161

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25586

Males

14577

M18-39

14577

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

26746

Males

15138

M18-39

15138

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2story building
+22ft-21ft

Overall

22866

Males

13214

M18-39

13214

Passing Analysis

Category:
Athletes Passed
906
Passed By
1317
Net Change
-411
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26186
5K → 10K26396+167#26186#26019
10K → 15K18172+109#26019#25910
15K → 20K16289+73#25910#25837
20K → Half1427-13#25837#25850
Half → 25K45168-123#25850#25973
25K → 30K29370-341#25973#26314
30K → 20M17182-165#26314#26479
20M → 21M2076-56#26479#26535
21M → 35K584-79#26535#26614
35K → 23M3090-60#26614#26674
23M → 24M1234-22#26674#26696
24M → 40K3512+23#26696#26673
40K → 25.2M515-10#26673#26683
25.2M → Finish882+86#26683#26597
TOTALS9061317-411
📊

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