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BOSTON MARATHON 2025

Alexander Whitcomb

Bib: 4691•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 9%
Gender (Male)
#0 / 16105
Top 15%
Division (M18-39)
#0 / 5642
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:39
Rank: #2608
Start → 5K
6:19/mi
19:39 split
10K· 6.21 mi
39:44
Rank: #3026 (-418)
5K → 10K
6:28/mi
20:05 split
15K· 9.32 mi
59:47
Rank: #3104 (-78)
10K → 15K
6:27/mi
20:03 split
20K· 12.43 mi
1:19:50
Rank: #3006 (+98)
15K → 20K
6:27/mi
20:03 split
Half· 13.11 mi
1:24:09
Rank: #2983 (+23)
20K → Half
6:20/mi
4:19 split
25K· 15.53 mi
1:39:54
Rank: #2940 (+43)
Half → 25K
6:30/mi
15:45 split
30K· 18.64 mi
2:00:34
Rank: #2838 (+102)
25K → 30K
6:39/mi
20:40 split
20M
2:09:45
Rank: #2799 (+39)
30K → 20M
6:45/mi
9:11 split
21M
2:16:50
Rank: #2751 (+48)
20M → 21M
7:05/mi
7:05 split
35K· 21.75 mi
2:21:40
Rank: #2720 (+31)
21M → 35K
6:28/mi
4:50 split
23M
2:30:14
Rank: #2697 (+23)
35K → 23M
6:51/mi
8:34 split
24M
2:36:54
Rank: #2654 (+43)
23M → 24M
6:40/mi
6:40 split
40K· 24.85 mi
2:42:36
Rank: #2613 (+41)
24M → 40K
6:40/mi
5:42 split
25.2M
2:45:11
Rank: #2618 (-5)
40K → 25.2M
7:29/mi
2:35 split
Finish· 26.22 mi
2:51:43
Rank: #2580 (+38)
25.2M → Finish
6:25/mi
6:32 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:24:09
Pace6:25 /mi
2nd Half
Distance13.11 mi
Time1:27:34
Pace6:41 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:4319:396:1919:39
6:19
-
10K
6.21 mi10:43:4839:446:2420:05
6:28
+0:09
15K
9.32 mi11:03:5159:476:2520:03
6:27
-0:01
20K
12.43 mi11:23:541:19:506:2520:03
6:27
0:00
Half
13.11 mi11:28:131:24:096:254:19
6:20
-0:07
25K
15.53 mi11:43:581:39:546:2615:45
6:30
+0:10
30K
18.64 mi12:04:382:00:346:2820:40
6:39
+0:09
20M
20.00 mi12:13:492:09:456:299:11
6:45
+0:06
21M
21.00 mi12:20:542:16:506:317:05
7:05
+0:20
35K
21.75 mi12:25:442:21:406:314:50
6:28
-0:37
23M
23.00 mi12:34:182:30:146:328:34
6:51
+0:23
24M
24.00 mi12:40:582:36:546:326:40
6:40
-0:11
40K
24.85 mi12:46:402:42:366:335:42
6:40
0:00
25.2M
25.20 mi12:49:152:45:116:332:35
7:29
+0:49
Finish
26.22 mi12:55:472:51:436:336:32
6:25
-1:04

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

6:19 /mi

Average Pace

6:33 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:03

94% of race

Time at Steady Pace

7:05

4% of race

Time at Slower Pace

2:35

2% of race

Average Pace: 6:33 /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 mi10:23:4319:396:1919:39
6:19
#2608
10K
6.21 mi10:43:4839:446:2420:05
6:28
#3026
15K
9.32 mi11:03:5159:476:2520:03
6:27
#3104
20K
12.43 mi11:23:541:19:506:2520:03
6:27
#3006
Half
13.11 mi11:28:131:24:096:254:19
6:20
#2983
25K
15.53 mi11:43:581:39:546:2615:45
6:30
#2940
30K
18.64 mi12:04:382:00:346:2820:40
6:39
#2838
20M
20.00 mi12:13:492:09:456:299:11
6:45
#2799
21M
21.00 mi12:20:542:16:506:317:05
7:05
#2751
35K
21.75 mi12:25:442:21:406:314:50
6:28
#2720
23M
23.00 mi12:34:182:30:146:328:34
6:51
#2697
24M
24.00 mi12:40:582:36:546:326:40
6:40
#2654
40K
24.85 mi12:46:402:42:366:335:42
6:40
#2613
25.2M
25.20 mi12:49:152:45:116:332:35
7:29
#2618
Finish
26.22 mi12:55:472:51:436:336:32
6:25
#2580
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2608248424843275(Top 12%)3111(Top 19%)3111(Top 55%)
10K6.21 mi3.10 mi3026-4182879-3952879-3953480(Top 12%)3299(Top 20%)3299(Top 58%)
15K9.32 mi3.11 mi3104-782957-782957-783275(Top 12%)3111(Top 19%)3111(Top 55%)
20K12.43 mi3.11 mi3006+982865+922865+922847(Top 10%)2711(Top 17%)2711(Top 48%)
Half13.11 mi0.68 mi2983+232844+212844+212700(Top 10%)2583(Top 16%)2583(Top 46%)
25K15.53 mi2.42 mi2940+432803+412803+412876(Top 10%)2737(Top 17%)2737(Top 49%)
30K18.64 mi3.11 mi2838+1022702+1012702+1012653(Top 9%)2511(Top 16%)2511(Top 45%)
20M20.00 mi1.36 mi2799+392666+362666+362733(Top 10%)2562(Top 16%)2562(Top 45%)
21M21.00 mi1.00 mi2751+482619+472619+472617(Top 9%)2439(Top 15%)2439(Top 43%)
35K21.75 mi0.75 mi2720+312588+312588+312305(Top 8%)2157(Top 13%)2157(Top 38%)
23M23.00 mi1.25 mi2697+232563+252563+252921(Top 10%)2676(Top 17%)2676(Top 47%)
24M24.00 mi1.00 mi2654+432520+432520+432805(Top 10%)2572(Top 16%)2572(Top 46%)
40K24.85 mi0.85 mi2613+412478+422478+422253(Top 8%)2068(Top 13%)2068(Top 37%)
25.2M25.20 mi0.35 mi2618-52479-12479-13376(Top 12%)2966(Top 18%)2966(Top 53%)
Finish26.22 mi1.02 mi2580+382444+352444+352375(Top 8%)2167(Top 13%)2167(Top 38%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3275

Males

3111

M18-39

3111

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3480

Males

3299

M18-39

3299

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3275

Males

3111

M18-39

3111

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2847

Males

2711

M18-39

2711

20K→Half

12.4 - 13.1 mi

Top 10%
×2stories
+19ft-37ft

Overall

2700

Males

2583

M18-39

2583

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2876

Males

2737

M18-39

2737

25K→30K

15.5 - 18.6 mi

Top 9%
×9stories
+181ft-148ft

Overall

2653

Males

2511

M18-39

2511

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2733

Males

2562

M18-39

2562

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2617

Males

2439

M18-39

2439

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2305

Males

2157

M18-39

2157

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2921

Males

2676

M18-39

2676

23M→24M

23.0 - 24.0 mi

Top 10%
×6stories
+12ft-82ft

Overall

2805

Males

2572

M18-39

2572

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2253

Males

2068

M18-39

2068

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3376

Males

2966

M18-39

2966

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2375

Males

2167

M18-39

2167

Passing Analysis

Category:
Athletes Passed
931
Passed By
903
Net Change
+28
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2608
5K → 10K31449-418#2608#3026
10K → 15K58136-78#3026#3104
15K → 20K13436+98#3104#3006
20K → Half307+23#3006#2983
Half → 25K8845+43#2983#2940
25K → 30K15957+102#2940#2838
30K → 20M7435+39#2838#2799
20M → 21M6719+48#2799#2751
21M → 35K387+31#2751#2720
35K → 23M6744+23#2720#2697
23M → 24M6421+43#2697#2654
24M → 40K5312+41#2654#2613
40K → 25.2M1520-5#2613#2618
25.2M → Finish5315+38#2618#2580
TOTALS931903+28
📊

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