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BOSTON MARATHON 2025

Matthew Pierson

Bib: 2178•M

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

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
20:35
Rank: #4828
Start → 5K
20:35 | 6:38/mi
10K· 6.21 mi
41:07
Rank: #4642 (+186)
5K → 10K
20:32 | 6:37/mi
15K· 9.32 mi
1:02:04
Rank: #4869 (-227)
10K → 15K
20:57 | 6:45/mi
20K· 12.43 mi
1:24:06
Rank: #5654 (-785)
15K → 20K
22:02 | 7:06/mi
Half· 13.11 mi
1:28:45
Rank: #5684 (-30)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:46:58
Rank: #6463 (-779)
Half → 25K
18:13 | 7:31/mi
30K· 18.64 mi
2:15:28
Rank: #8570 (-2107)
25K → 30K
28:30 | 9:10/mi
20M
2:27:20
Rank: #9119 (-549)
30K → 20M
11:52 | 8:44/mi
21M
2:37:52
Rank: #9965 (-846)
20M → 21M
10:32 | 10:32/mi
35K· 21.75 mi
2:44:51
Rank: #10447 (-482)
21M → 35K
6:59 | 9:20/mi
23M
2:56:00
Rank: #10751 (-304)
35K → 23M
11:09 | 8:54/mi
24M
3:04:18
Rank: #10848 (-97)
23M → 24M
8:18 | 8:18/mi
40K· 24.85 mi
3:11:52
Rank: #11011 (-163)
24M → 40K
7:34 | 8:51/mi
25.2M
3:15:09
Rank: #11067 (-56)
40K → 25.2M
3:17 | 9:31/mi
Finish· 26.22 mi
3:22:52
Rank: #10986 (+81)
25.2M → Finish
7:43 | 7:34/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:45
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:54:07
Pace8:42 /mi
📊Positive Split: 28.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:0020:356:3820:35
6:38
-
10K
6.21 mi10:41:3241:076:3720:32
6:37
-0:01
15K
9.32 mi11:02:291:02:046:4020:57
6:45
+0:08
20K
12.43 mi11:24:311:24:066:4622:02
7:06
+0:21
Half
13.11 mi11:29:101:28:456:464:39
6:49
-0:17
25K
15.53 mi11:47:231:46:586:5318:13
7:31
+0:42
30K
18.64 mi12:15:532:15:287:1628:30
9:10
+1:39
20M
20.00 mi12:27:452:27:207:2211:52
8:44
-0:26
21M
21.00 mi12:38:172:37:527:3110:32
10:32
+1:48
35K
21.75 mi12:45:162:44:517:356:59
9:20
-1:12
23M
23.00 mi12:56:252:56:007:3911:09
8:54
-0:26
24M
24.00 mi13:04:433:04:187:418:18
8:18
-0:36
40K
24.85 mi13:12:173:11:527:437:34
8:51
+0:33
25.2M
25.20 mi13:15:343:15:097:453:17
9:31
+0:40
Finish
26.22 mi13:23:173:22:527:457:43
7:34
-1:57

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

6:37 /mi

Average Pace

7:45 /mi

Slowest Pace

10:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:54:41

57% of race

Time at Steady Pace

38:53

19% of race

Time at Slower Pace

49:18

24% of race

Average Pace: 7:44 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:21:0020:356:3820:35
6:38
#4828
10K
6.21 mi10:41:3241:076:3720:32
6:37
#4642
15K
9.32 mi11:02:291:02:046:4020:57
6:45
#4869
20K
12.43 mi11:24:311:24:066:4622:02
7:06
#5654
Half
13.11 mi11:29:101:28:456:464:39
6:49
#5684
25K
15.53 mi11:47:231:46:586:5318:13
7:31
#6463
30K
18.64 mi12:15:532:15:287:1628:30
9:10
#8570
20M
20.00 mi12:27:452:27:207:2211:52
8:44
#9119
21M
21.00 mi12:38:172:37:527:3110:32
10:32
#9965
35K
21.75 mi12:45:162:44:517:356:59
9:20
#10447
23M
23.00 mi12:56:252:56:007:3911:09
8:54
#10751
24M
24.00 mi13:04:433:04:187:418:18
8:18
#10848
40K
24.85 mi13:12:173:11:527:437:34
8:51
#11011
25.2M
25.20 mi13:15:343:15:097:453:17
9:31
#11067
Finish
26.22 mi13:23:173:22:527:457:43
7:34
#10986
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4828452145215520(Top 19%)5066(Top 31%)5066(Top 90%)
10K6.21 mi3.10 mi4642+1864354+1674354+1674556(Top 16%)4270(Top 27%)4270(Top 76%)
15K9.32 mi3.11 mi4869-2274549-1954549-1955520(Top 19%)5066(Top 31%)5066(Top 90%)
20K12.43 mi3.11 mi5654-7855194-6455194-6457466(Top 26%)6535(Top 41%)6535(Top 116%)
Half13.11 mi0.68 mi5684-305220-265220-266335(Top 22%)5720(Top 36%)5720(Top 101%)
25K15.53 mi2.42 mi6463-7795838-6185838-61810078(Top 35%)7921(Top 49%)7921(Top 140%)
30K18.64 mi3.11 mi8570-21077221-13837221-138318504(Top 65%)11614(Top 72%)11614(Top 206%)
20M20.00 mi1.36 mi9119-5497508-2877508-28715232(Top 54%)10018(Top 62%)10018(Top 178%)
21M21.00 mi1.00 mi9965-8467928-4207928-42020089(Top 71%)12071(Top 75%)12071(Top 214%)
35K21.75 mi0.75 mi10447-4828136-2088136-20819680(Top 69%)11806(Top 73%)11806(Top 209%)
23M23.00 mi1.25 mi10751-3048235-998235-9915679(Top 55%)9923(Top 62%)9923(Top 176%)
24M24.00 mi1.00 mi10848-978249-148249-1413233(Top 47%)8758(Top 54%)8758(Top 155%)
40K24.85 mi0.85 mi11011-1638285-368285-3615423(Top 54%)9610(Top 60%)9610(Top 170%)
25.2M25.20 mi0.35 mi11067-568297-128297-1214617(Top 51%)9210(Top 57%)9210(Top 163%)
Finish26.22 mi1.02 mi10986+818224+738224+739715(Top 34%)6826(Top 42%)6826(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5520

Males

5066

M18-39

5066

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4556

Males

4270

M18-39

4270

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5520

Males

5066

M18-39

5066

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

7466

Males

6535

M18-39

6535

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

6335

Males

5720

M18-39

5720

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

10078

Males

7921

M18-39

7921

25K→30K

15.5 - 18.6 mi

Top 65%
×9stories
+181ft-148ft

Overall

18504

Males

11614

M18-39

11614

30K→20M

18.6 - 20.0 mi

Top 54%
×5stories
+64ft-50ft

Overall

15232

Males

10018

M18-39

10018

20M→21M

20.0 - 21.0 mi

Top 71%
×8stories
+106ft-24ft

Overall

20089

Males

12071

M18-39

12071

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

19680

Males

11806

M18-39

11806

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

15679

Males

9923

M18-39

9923

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

13233

Males

8758

M18-39

8758

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15423

Males

9610

M18-39

9610

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

14617

Males

9210

M18-39

9210

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

9715

Males

6826

M18-39

6826

Passing Analysis

Category:
Athletes Passed
689
Passed By
6844
Net Change
-6158
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4828
5K → 10K27589+186#4828#4642
10K → 15K48275-227#4642#4869
15K → 20K20805-785#4869#5654
20K → Half1545-30#5654#5684
Half → 25K24803-779#5684#6463
25K → 30K112118-2107#6463#8570
30K → 20M22571-549#8570#9119
20M → 21M7852-846#9119#9965
21M → 35K6486-482#9965#10447
35K → 23M48352-304#10447#10751
23M → 24M47144-97#10751#10848
24M → 40K36199-163#10848#11011
40K → 25.2M2076-56#11011#11067
25.2M → Finish11029+81#11067#10986
TOTALS6896844-6158
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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