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BOSTON MARATHON 2025

Alex Pearson

Bib: 5420•M

PA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 35%
Gender (Male)
#0 / 16105
Top 48%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:48
Rank: #1240
Start → 5K
18:48 | 6:03/mi
10K· 6.21 mi
38:00
Rank: #1502 (-262)
5K → 10K
19:12 | 6:11/mi
15K· 9.32 mi
57:13
Rank: #1572 (-70)
10K → 15K
19:13 | 6:11/mi
20K· 12.43 mi
1:16:43
Rank: #1649 (-77)
15K → 20K
19:30 | 6:17/mi
Half· 13.11 mi
1:21:02
Rank: #1687 (-38)
20K → Half
4:19 | 6:20/mi
25K· 15.53 mi
1:39:26
Rank: #2757 (-1070)
Half → 25K
18:24 | 7:35/mi
30K· 18.64 mi
2:07:50
Rank: #5655 (-2898)
25K → 30K
28:24 | 9:08/mi
20M
2:21:36
Rank: #6920 (-1265)
30K → 20M
13:46 | 10:08/mi
21M
2:33:14
Rank: #8106 (-1186)
20M → 21M
11:38 | 11:38/mi
35K· 21.75 mi
2:41:16
Rank: #9058 (-952)
21M → 35K
8:02 | 10:44/mi
23M
2:53:22
Rank: #9820 (-762)
35K → 23M
12:06 | 9:40/mi
24M
3:02:14
Rank: #10161 (-341)
23M → 24M
8:52 | 8:52/mi
40K· 24.85 mi
3:08:52
Rank: #10062 (+99)
24M → 40K
6:38 | 7:45/mi
25.2M
3:11:44
Rank: #10001 (+61)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:19:11
Rank: #9888 (+113)
25.2M → Finish
7:27 | 7:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:02
Pace6:11 /mi
2nd Half
Distance13.11 mi
Time1:58:09
Pace9:01 /mi
📊Positive Split: 45.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:5418:486:0318:48
6:03
-
10K
6.21 mi10:41:0638:006:0719:12
6:11
+0:08
15K
9.32 mi11:00:1957:136:0819:13
6:11
0:00
20K
12.43 mi11:19:491:16:436:1019:30
6:17
+0:06
Half
13.11 mi11:24:081:21:026:114:19
6:20
+0:03
25K
15.53 mi11:42:321:39:266:2418:24
7:35
+1:15
30K
18.64 mi12:10:562:07:506:5128:24
9:08
+1:33
20M
20.00 mi12:24:422:21:367:0513:46
10:08
+1:00
21M
21.00 mi12:36:202:33:147:1811:38
11:38
+1:30
35K
21.75 mi12:44:222:41:167:258:02
10:44
-0:54
23M
23.00 mi12:56:282:53:227:3212:06
9:40
-1:04
24M
24.00 mi13:05:203:02:147:368:52
8:52
-0:48
40K
24.85 mi13:11:583:08:527:366:38
7:45
-1:07
25.2M
25.20 mi13:14:503:11:447:372:52
8:19
+0:34
Finish
26.22 mi13:22:173:19:117:367:27
7:19
-1:00

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

6:03 /mi

Average Pace

7:36 /mi

Slowest Pace

11:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:21:02

41% of race

Time at Steady Pace

35:21

18% of race

Time at Slower Pace

1:22:48

42% of race

Average Pace: 7:36 /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 mi10:21:5418:486:0318:48
6:03
#1240
10K
6.21 mi10:41:0638:006:0719:12
6:11
#1502
15K
9.32 mi11:00:1957:136:0819:13
6:11
#1572
20K
12.43 mi11:19:491:16:436:1019:30
6:17
#1649
Half
13.11 mi11:24:081:21:026:114:19
6:20
#1687
25K
15.53 mi11:42:321:39:266:2418:24
7:35
#2757
30K
18.64 mi12:10:562:07:506:5128:24
9:08
#5655
20M
20.00 mi12:24:422:21:367:0513:46
10:08
#6920
21M
21.00 mi12:36:202:33:147:1811:38
11:38
#8106
35K
21.75 mi12:44:222:41:167:258:02
10:44
#9058
23M
23.00 mi12:56:282:53:227:3212:06
9:40
#9820
24M
24.00 mi13:05:203:02:147:368:52
8:52
#10161
40K
24.85 mi13:11:583:08:527:366:38
7:45
#10062
25.2M
25.20 mi13:14:503:11:447:372:52
8:19
#10001
Finish
26.22 mi13:22:173:19:117:367:27
7:19
#9888
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1240117511751796(Top 6%)1708(Top 11%)1708(Top 30%)
10K6.21 mi3.10 mi1502-2621429-2541429-2541816(Top 6%)1725(Top 11%)1725(Top 31%)
15K9.32 mi3.11 mi1572-701495-661495-661796(Top 6%)1708(Top 11%)1708(Top 30%)
20K12.43 mi3.11 mi1649-771566-711566-711925(Top 7%)1835(Top 11%)1835(Top 33%)
Half13.11 mi0.68 mi1687-381602-361602-362721(Top 10%)2604(Top 16%)2604(Top 46%)
25K15.53 mi2.42 mi2757-10702629-10272629-102710655(Top 38%)8217(Top 51%)8217(Top 146%)
30K18.64 mi3.11 mi5655-28985164-25355164-253518343(Top 65%)11531(Top 72%)11531(Top 204%)
20M20.00 mi1.36 mi6920-12656123-9596123-95921365(Top 75%)12747(Top 79%)12747(Top 226%)
21M21.00 mi1.00 mi8106-11866871-7486871-74822872(Top 81%)13373(Top 83%)13373(Top 237%)
35K21.75 mi0.75 mi9058-9527416-5457416-54523647(Top 83%)13706(Top 85%)13706(Top 243%)
23M23.00 mi1.25 mi9820-7627776-3607776-36019308(Top 68%)11575(Top 72%)11575(Top 205%)
24M24.00 mi1.00 mi10161-3417912-1367912-13616637(Top 59%)10302(Top 64%)10302(Top 183%)
40K24.85 mi0.85 mi10062+997831+817831+818470(Top 30%)6244(Top 39%)6244(Top 111%)
25.2M25.20 mi0.35 mi10001+617789+427789+427705(Top 27%)5764(Top 36%)5764(Top 102%)
Finish26.22 mi1.02 mi9888+1137700+897700+897844(Top 28%)5822(Top 36%)5822(Top 103%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 6%
×21stories
+97ft-345ft

Overall

1796

Males

1708

M18-39

1708

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1816

Males

1725

M18-39

1725

10K→15K

6.2 - 9.3 mi

Top 6%
×3stories
+67ft-78ft

Overall

1796

Males

1708

M18-39

1708

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1925

Males

1835

M18-39

1835

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2721

Males

2604

M18-39

2604

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10655

Males

8217

M18-39

8217

25K→30K

15.5 - 18.6 mi

Top 65%
×9stories
+181ft-148ft

Overall

18343

Males

11531

M18-39

11531

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

21365

Males

12747

M18-39

12747

20M→21M

20.0 - 21.0 mi

Top 81%
×8stories
+106ft-24ft

Overall

22872

Males

13373

M18-39

13373

21M→35K

21.0 - 21.8 mi

Top 83%
×7stories
+17ft-86ft

Overall

23647

Males

13706

M18-39

13706

35K→23M

21.8 - 23.0 mi

Top 68%
×5stories
+23ft-63ft

Overall

19308

Males

11575

M18-39

11575

23M→24M

23.0 - 24.0 mi

Top 59%
×6stories
+12ft-82ft

Overall

16637

Males

10302

M18-39

10302

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8470

Males

6244

M18-39

6244

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7705

Males

5764

M18-39

5764

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

7844

Males

5822

M18-39

5822

Passing Analysis

Category:
Athletes Passed
444*
Passed By
9090
Net Change
-8648
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1240
5K → 10K11273-262#1240#1502
10K → 15K2999-70#1502#1572
15K → 20K26103-77#1572#1649
20K → Half341-38#1649#1687
Half → 25K21072-1070#1687#2757
25K → 30K32901-2898#2757#5655
30K → 20M11266-1265#5655#6920
20M → 21M21188-1186#6920#8106
21M → 35K1953-952#8106#9058
35K → 23M12774-762#9058#9820
23M → 24M25364-341#9820#10161
24M → 40K12728+99#10161#10062
40K → 25.2M709+61#10062#10001
25.2M → Finish132*19+113#10001#9888
TOTALS444*9090-8648

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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