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BOSTON MARATHON 2025

David Armstrong

Bib: 6635•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 31%
Gender (Male)
#0 / 16105
Top 44%
Masters (Masters Men)
#0 / 10463
Top 32%
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:34
Rank: #4778
Start → 5K
20:34 | 6:37/mi
10K· 6.21 mi
40:39
Rank: #4090 (+688)
5K → 10K
20:05 | 6:28/mi
15K· 9.32 mi
1:01:29
Rank: #4371 (-281)
10K → 15K
20:50 | 6:42/mi
20K· 12.43 mi
1:23:20
Rank: #5056 (-685)
15K → 20K
21:51 | 7:02/mi
Half· 13.11 mi
1:28:01
Rank: #5124 (-68)
20K → Half
4:41 | 6:52/mi
25K· 15.53 mi
1:44:58
Rank: #5339 (-215)
Half → 25K
16:57 | 6:59/mi
30K· 18.64 mi
2:08:34
Rank: #5957 (-618)
25K → 30K
23:36 | 7:36/mi
20M
2:18:36
Rank: #5942 (+15)
30K → 20M
10:02 | 7:23/mi
21M
2:32:28
Rank: #7825 (-1883)
20M → 21M
13:52 | 13:52/mi
35K· 21.75 mi
2:37:47
Rank: #7710 (+115)
21M → 35K
5:19 | 7:06/mi
23M
2:49:23
Rank: #8332 (-622)
35K → 23M
11:36 | 9:16/mi
24M
2:57:40
Rank: #8547 (-215)
23M → 24M
8:17 | 8:17/mi
40K· 24.85 mi
3:04:53
Rank: #8702 (-155)
24M → 40K
7:13 | 8:26/mi
25.2M
3:08:01
Rank: #8752 (-50)
40K → 25.2M
3:08 | 9:05/mi
Finish· 26.22 mi
3:15:50
Rank: #8817 (-65)
25.2M → Finish
7:49 | 7:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:01
Pace6:43 /mi
2nd Half
Distance13.11 mi
Time1:47:49
Pace8:13 /mi
📊Positive Split: 22.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:2120:346:3720:34
6:37
-
10K
6.21 mi10:46:2640:396:3320:05
6:28
-0:09
15K
9.32 mi11:07:161:01:296:3620:50
6:42
+0:14
20K
12.43 mi11:29:071:23:206:4221:51
7:02
+0:20
Half
13.11 mi11:33:481:28:016:434:41
6:52
-0:10
25K
15.53 mi11:50:451:44:586:4516:57
6:59
+0:07
30K
18.64 mi12:14:212:08:346:5423:36
7:36
+0:37
20M
20.00 mi12:24:232:18:366:5610:02
7:23
-0:13
21M
21.00 mi12:38:152:32:287:1613:52
13:52
+6:29
35K
21.75 mi12:43:342:37:477:155:19
7:06
-6:46
23M
23.00 mi12:55:102:49:237:2211:36
9:16
+2:10
24M
24.00 mi13:03:272:57:407:248:17
8:17
-0:59
40K
24.85 mi13:10:403:04:537:267:13
8:26
+0:09
25.2M
25.20 mi13:13:483:08:017:283:08
9:05
+0:39
Finish
26.22 mi13:21:373:15:507:287:49
7:40
-1:25

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

6:28 /mi

Average Pace

7:28 /mi

Slowest Pace

13:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

20:05

10% of race

Time at Steady Pace

2:11:39

67% of race

Time at Slower Pace

44:06

23% of race

Average Pace: 7:28 /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 mi10:26:2120:346:3720:34
6:37
#4778
10K
6.21 mi10:46:2640:396:3320:05
6:28
#4090
15K
9.32 mi11:07:161:01:296:3620:50
6:42
#4371
20K
12.43 mi11:29:071:23:206:4221:51
7:02
#5056
Half
13.11 mi11:33:481:28:016:434:41
6:52
#5124
25K
15.53 mi11:50:451:44:586:4516:57
6:59
#5339
30K
18.64 mi12:14:212:08:346:5423:36
7:36
#5957
20M
20.00 mi12:24:232:18:366:5610:02
7:23
#5942
21M
21.00 mi12:38:152:32:287:1613:52
13:52
#7825
35K
21.75 mi12:43:342:37:477:155:19
7:06
#7710
23M
23.00 mi12:55:102:49:237:2211:36
9:16
#8332
24M
24.00 mi13:03:272:57:407:248:17
8:17
#8547
40K
24.85 mi13:10:403:04:537:267:13
8:26
#8702
25.2M
25.20 mi13:13:483:08:017:283:08
9:05
#8752
Finish
26.22 mi13:21:373:15:507:287:49
7:40
#8817
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4778447944795139(Top 18%)4764(Top 30%)4764(Top 212%)
10K6.21 mi3.10 mi4090+6883857+6223857+6223491(Top 12%)3310(Top 21%)3310(Top 147%)
15K9.32 mi3.11 mi4371-2814109-2524109-2525139(Top 18%)4764(Top 30%)4764(Top 212%)
20K12.43 mi3.11 mi5056-6854703-5944703-5947083(Top 25%)6270(Top 39%)6270(Top 279%)
Half13.11 mi0.68 mi5124-684756-534756-536688(Top 24%)5984(Top 37%)5984(Top 266%)
25K15.53 mi2.42 mi5339-2154923-1674923-1676281(Top 22%)5605(Top 35%)5605(Top 249%)
30K18.64 mi3.11 mi5957-6185408-4855408-4858411(Top 30%)6829(Top 42%)6829(Top 304%)
20M20.00 mi1.36 mi5942+155377+315377+316300(Top 22%)5405(Top 34%)5405(Top 241%)
21M21.00 mi1.00 mi7825-18836697-13206697-132026079(Top 92%)14920(Top 93%)14920(Top 664%)
35K21.75 mi0.75 mi7710+1156603+946603+946045(Top 21%)5102(Top 32%)5102(Top 227%)
23M23.00 mi1.25 mi8332-6226946-3436946-34317604(Top 62%)10763(Top 67%)10763(Top 479%)
24M24.00 mi1.00 mi8547-2157043-977043-9713099(Top 46%)8683(Top 54%)8683(Top 386%)
40K24.85 mi0.85 mi8702-1557091-487091-4813003(Top 46%)8518(Top 53%)8518(Top 379%)
25.2M25.20 mi0.35 mi8752-507104-137104-1312183(Top 43%)8067(Top 50%)8067(Top 359%)
Finish26.22 mi1.02 mi8817-657105-17105-110453(Top 37%)7223(Top 45%)7223(Top 321%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21stories
+97ft-345ft

Overall

5139

Males

4764

M40-44

4764

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3491

Males

3310

M40-44

3310

10K→15K

6.2 - 9.3 mi

Top 18%
×3stories
+67ft-78ft

Overall

5139

Males

4764

M40-44

4764

15K→20K

9.3 - 12.4 mi

Top 25%
×5stories
+106ft-86ft

Overall

7083

Males

6270

M40-44

6270

20K→Half

12.4 - 13.1 mi

Top 24%
×2stories
+19ft-37ft

Overall

6688

Males

5984

M40-44

5984

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

6281

Males

5605

M40-44

5605

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8411

Males

6829

M40-44

6829

30K→20M

18.6 - 20.0 mi

Top 22%
×5stories
+64ft-50ft

Overall

6300

Males

5405

M40-44

5405

20M→21M

20.0 - 21.0 mi

Top 92%
×8stories
+106ft-24ft

Overall

26079

Males

14920

M40-44

14920

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

6045

Males

5102

M40-44

5102

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

17604

Males

10763

M40-44

10763

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

13099

Males

8683

M40-44

8683

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

13003

Males

8518

M40-44

8518

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

12183

Males

8067

M40-44

8067

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2stories
+22ft-21ft

Overall

10453

Males

7223

M40-44

7223

Passing Analysis

Category:
Athletes Passed
1253
Passed By
5292
Net Change
-4039
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4778
5K → 10K6979+688#4778#4090
10K → 15K29310-281#4090#4371
15K → 20K27712-685#4371#5056
20K → Half876-68#5056#5124
Half → 25K59274-215#5124#5339
25K → 30K62680-618#5339#5957
30K → 20M7863+15#5957#5942
20M → 21M11884-1883#5942#7825
21M → 35K1216+115#7825#7710
35K → 23M18640-622#7710#8332
23M → 24M25240-215#8332#8547
24M → 40K51206-155#8547#8702
40K → 25.2M2272-50#8702#8752
25.2M → Finish55120-65#8752#8817
TOTALS12535292-4039
📊

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