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BOSTON MARATHON 2025

Matthew Gregg

Bib: 27291•M

NH

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
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
8:14/mi
25:35
↑ 97↓ 3451.5%
10K· 6.21 mi
8:26/mi
51:46
↑ 79↓ 1380.4%
15K· 9.32 mi
8:38/mi
1:18:34
↑ 67↓ 78
20K· 12.43 mi
8:45/mi
1:45:45
↑ 106↓ 860.1%
Half· 13.11 mi
8:37/mi
1:51:38
↑ 19↓ 370.5%
25K· 15.53 mi
8:50/mi
2:13:03
↑ 66↓ 880.2%
30K· 18.64 mi
8:59/mi
2:40:57
↑ 181↓ 1480.2%
20M
8:59/mi
2:53:10
↑ 64↓ 500.2%
21M
9:11/mi
3:02:21
↑ 106↓ 241.6%
35K· 21.75 mi
8:36/mi
3:08:47
↑ 17↓ 861.7%
23M
8:44/mi
3:19:43
↑ 23↓ 630.6%
24M
8:34/mi
3:28:17
↓ 821.3%
40K· 24.85 mi
8:49/mi
3:35:49
↓ 200.3%
25.2M
9:20/mi
3:39:02
↑ 13↓ 160.2%
Finish· 26.22 mi
7:48/mi
3:46:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:38
Pace8:31 /mi
2nd Half
Distance13.11 mi
Time1:55:21
Pace8:48 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:41:1525:358:1425:35
8:14
-
10K
6.21 mi12:07:2651:468:2026:11
8:26
+0:12
15K
9.32 mi12:34:141:18:348:2626:48
8:38
+0:12
20K
12.43 mi13:01:251:45:458:3127:11
8:45
+0:07
Half
13.11 mi13:07:181:51:388:315:53
8:37
-0:08
25K
15.53 mi13:28:432:13:038:3421:25
8:50
+0:13
30K
18.64 mi13:56:372:40:578:3827:54
8:59
+0:09
20M
20.00 mi14:08:502:53:108:3912:13
8:59
0:00
21M
21.00 mi14:18:013:02:218:419:11
9:11
+0:12
35K
21.75 mi14:24:273:08:478:416:26
8:36
-0:35
23M
23.00 mi14:35:233:19:438:4110:56
8:44
+0:08
24M
24.00 mi14:43:573:28:178:418:34
8:34
-0:10
40K
24.85 mi14:51:293:35:498:417:32
8:49
+0:15
25.2M
25.20 mi14:54:423:39:028:423:13
9:20
+0:31
Finish
26.22 mi15:02:393:46:598:407:57
7:48
-1:32

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

7:48 /mi

Average Pace

8:40 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:08:17

30% of race

Time at Steady Pace

2:35:29

68% of race

Time at Slower Pace

3:13

1% of race

Average Pace: 8:39 /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 mi11:41:1525:358:1425:35
8:14
#18314
10K
6.21 mi12:07:2651:468:2026:11
8:26
#18807
15K
9.32 mi12:34:141:18:348:2626:48
8:38
#19217
20K
12.43 mi13:01:251:45:458:3127:11
8:45
#19327
Half
13.11 mi13:07:181:51:388:315:53
8:37
#19355
25K
15.53 mi13:28:432:13:038:3421:25
8:50
#19289
30K
18.64 mi13:56:372:40:578:3827:54
8:59
#18944
20M
20.00 mi14:08:502:53:108:3912:13
8:59
#18776
21M
21.00 mi14:18:013:02:218:419:11
9:11
#18512
35K
21.75 mi14:24:273:08:478:416:26
8:36
#18411
23M
23.00 mi14:35:233:19:438:4110:56
8:44
#18185
24M
24.00 mi14:43:573:28:178:418:34
8:34
#18011
40K
24.85 mi14:51:293:35:498:417:32
8:49
#17904
25.2M
25.20 mi14:54:423:39:028:423:13
9:20
#17835
Finish
26.22 mi15:02:393:46:598:407:57
7:48
#17594
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi18314117261172620055(Top 71%)12529(Top 78%)12529(Top 525%)
10K6.21 mi3.10 mi18807-49311953-22711953-22719347(Top 68%)12211(Top 76%)12211(Top 512%)
15K9.32 mi3.11 mi19217-41012142-18912142-18920055(Top 71%)12529(Top 78%)12529(Top 525%)
20K12.43 mi3.11 mi19327-11012173-3112173-3119664(Top 69%)12311(Top 76%)12311(Top 516%)
Half13.11 mi0.68 mi19355-2812189-1612189-1619881(Top 70%)12408(Top 77%)12408(Top 520%)
25K15.53 mi2.42 mi19289+6612151+3812151+3819086(Top 67%)12009(Top 75%)12009(Top 503%)
30K18.64 mi3.11 mi18944+34511977+17411977+17417575(Top 62%)11178(Top 69%)11178(Top 468%)
20M20.00 mi1.36 mi18776+16811878+9911878+9916725(Top 59%)10695(Top 66%)10695(Top 448%)
21M21.00 mi1.00 mi18512+26411730+14811730+14814530(Top 51%)9590(Top 60%)9590(Top 402%)
35K21.75 mi0.75 mi18411+10111673+5711673+5716047(Top 56%)10199(Top 63%)10199(Top 427%)
23M23.00 mi1.25 mi18185+22611540+13311540+13314730(Top 52%)9508(Top 59%)9508(Top 398%)
24M24.00 mi1.00 mi18011+17411436+10411436+10414933(Top 53%)9560(Top 59%)9560(Top 401%)
40K24.85 mi0.85 mi17904+10711362+7411362+7415238(Top 54%)9549(Top 59%)9549(Top 400%)
25.2M25.20 mi0.35 mi17835+6911320+4211320+4213593(Top 48%)8763(Top 54%)8763(Top 367%)
Finish26.22 mi1.02 mi17594+24111190+13011190+13011453(Top 40%)7748(Top 48%)7748(Top 325%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

20055

Males

12529

M45-49

12529

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

19347

Males

12211

M45-49

12211

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

20055

Males

12529

M45-49

12529

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

19664

Males

12311

M45-49

12311

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

19881

Males

12408

M45-49

12408

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

19086

Males

12009

M45-49

12009

25K→30K

15.5 - 18.6 mi

Top 62%
×9story building
+181ft-148ft

Overall

17575

Males

11178

M45-49

11178

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

16725

Males

10695

M45-49

10695

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

14530

Males

9590

M45-49

9590

21M→35K

21.0 - 21.8 mi

Top 56%
×7story building
+17ft-86ft

Overall

16047

Males

10199

M45-49

10199

35K→23M

21.8 - 23.0 mi

Top 52%
×5story building
+23ft-63ft

Overall

14730

Males

9508

M45-49

9508

23M→24M

23.0 - 24.0 mi

Top 53%
×6story building
+12ft-82ft

Overall

14933

Males

9560

M45-49

9560

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15238

Males

9549

M45-49

9549

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

13593

Males

8763

M45-49

8763

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

11453

Males

7748

M45-49

7748

Passing Analysis

Category:
Athletes Passed
2408
Passed By
1688
Net Change
+720
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18314
5K → 10K96589-493#18314#18807
10K → 15K91501-410#18807#19217
15K → 20K157267-110#19217#19327
20K → Half2250-28#19327#19355
Half → 25K199133+66#19355#19289
25K → 30K40055+345#19289#18944
30K → 20M19931+168#18944#18776
20M → 21M2739+264#18776#18512
21M → 35K11211+101#18512#18411
35K → 23M2359+226#18411#18185
23M → 24M1795+174#18185#18011
24M → 40K12619+107#18011#17904
40K → 25.2M734+69#17904#17835
25.2M → Finish2465+241#17835#17594
TOTALS24081688+720
📊

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