Boston Marathon logo
BOSTON MARATHON 2023

Brenden Howarth

Bib: 25959•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:43
Rank: #23976
Start → 5K
10:13/mi
31:43 split
10K· 6.21 mi
1:05:34
Rank: #24806 (-830)
5K → 10K
10:54/mi
33:51 split
15K· 9.32 mi
1:39:05
Rank: #24858 (-52)
10K → 15K
10:47/mi
33:31 split
20K· 12.43 mi
2:13:06
Rank: #24787 (+71)
15K → 20K
10:57/mi
34:01 split
Half· 13.11 mi
2:20:32
Rank: #24793 (-6)
20K → Half
10:54/mi
7:26 split
25K· 15.53 mi
2:50:26
Rank: #24976 (-183)
Half → 25K
12:20/mi
29:54 split
30K· 18.64 mi
3:27:10
Rank: #24858 (+118)
25K → 30K
11:49/mi
36:44 split
20M
3:44:43
Rank: #24886 (-28)
30K → 20M
12:55/mi
17:33 split
21M
3:59:19
Rank: #24962 (-76)
20M → 21M
14:36/mi
14:36 split
35K· 21.75 mi
4:08:10
Rank: #24954 (+8)
21M → 35K
11:50/mi
8:51 split
23M
4:24:51
Rank: #25007 (-53)
35K → 23M
13:19/mi
16:41 split
24M
4:40:15
Rank: #25163 (-156)
23M → 24M
15:24/mi
15:24 split
40K· 24.85 mi
4:53:37
Rank: #25254 (-91)
24M → 40K
15:38/mi
13:22 split
25.2M
4:58:26
Rank: #25254
40K → 25.2M
13:58/mi
4:49 split
Finish· 26.22 mi
5:10:34
Rank: #25259 (-5)
25.2M → Finish
11:54/mi
12:08 split

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:32
Pace10:43 /mi
2nd Half
Distance13.11 mi
Time2:50:02
Pace12:58 /mi
📊Positive Split: 21.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:1031:4310:1331:43
10:13
-
10K
6.21 mi12:22:011:05:3410:3333:51
10:54
+0:41
15K
9.32 mi12:55:321:39:0510:3833:31
10:47
-0:07
20K
12.43 mi13:29:332:13:0610:4334:01
10:57
+0:10
Half
13.11 mi13:36:592:20:3210:437:26
10:54
-0:03
25K
15.53 mi14:06:532:50:2610:5829:54
12:20
+1:26
30K
18.64 mi14:43:373:27:1011:0736:44
11:49
-0:31
20M
20.00 mi15:01:103:44:4311:1417:33
12:55
+1:06
21M
21.00 mi15:15:463:59:1911:2414:36
14:36
+1:41
35K
21.75 mi15:24:374:08:1011:258:51
11:50
-2:46
23M
23.00 mi15:41:184:24:5111:3116:41
13:19
+1:29
24M
24.00 mi15:56:424:40:1511:4115:24
15:24
+2:05
40K
24.85 mi16:10:044:53:3711:4913:22
15:38
+0:14
25.2M
25.20 mi16:14:534:58:2611:514:49
13:58
-1:40
Finish
26.22 mi16:27:015:10:3411:5112:08
11:54
-2:04

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

10:13 /mi

Average Pace

11:51 /mi

Slowest Pace

15:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:32

45% of race

Time at Steady Pace

1:27:37

28% of race

Time at Slower Pace

1:22:25

27% of race

Average Pace: 11:51 /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 mi11:48:1031:4310:1331:43
10:13
#23976
10K
6.21 mi12:22:011:05:3410:3333:51
10:54
#24806
15K
9.32 mi12:55:321:39:0510:3833:31
10:47
#24858
20K
12.43 mi13:29:332:13:0610:4334:01
10:57
#24787
Half
13.11 mi13:36:592:20:3210:437:26
10:54
#24793
25K
15.53 mi14:06:532:50:2610:5829:54
12:20
#24976
30K
18.64 mi14:43:373:27:1011:0736:44
11:49
#24858
20M
20.00 mi15:01:103:44:4311:1417:33
12:55
#24886
21M
21.00 mi15:15:463:59:1911:2414:36
14:36
#24962
35K
21.75 mi15:24:374:08:1011:258:51
11:50
#24954
23M
23.00 mi15:41:184:24:5111:3116:41
13:19
#25007
24M
24.00 mi15:56:424:40:1511:4115:24
15:24
#25163
40K
24.85 mi16:10:044:53:3711:4913:22
15:38
#25254
25.2M
25.20 mi16:14:534:58:2611:514:49
13:58
#25254
Finish
26.22 mi16:27:015:10:3411:5112:08
11:54
#25259
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23976140821408224914(Top 94%)14480(Top 95%)14480(Top 274%)
10K6.21 mi3.10 mi24806-83014460-37814460-37825332(Top 95%)14681(Top 97%)14681(Top 278%)
15K9.32 mi3.11 mi24858-5214471-1114471-1124914(Top 94%)14480(Top 95%)14480(Top 274%)
20K12.43 mi3.11 mi24787+7114433+3814433+3824553(Top 92%)14303(Top 94%)14303(Top 271%)
Half13.11 mi0.68 mi24793-614430+314430+324791(Top 93%)14399(Top 95%)14399(Top 272%)
25K15.53 mi2.42 mi24976-18314504-7414504-7425409(Top 95%)14647(Top 97%)14647(Top 277%)
30K18.64 mi3.11 mi24858+11814429+7514429+7524299(Top 91%)14107(Top 93%)14107(Top 267%)
20M20.00 mi1.36 mi24886-2814431-214431-225105(Top 94%)14426(Top 95%)14426(Top 273%)
21M21.00 mi1.00 mi24962-7614452-2114452-2125483(Top 96%)14608(Top 96%)14608(Top 276%)
35K21.75 mi0.75 mi24954+814447+514447+524506(Top 92%)14084(Top 93%)14084(Top 266%)
23M23.00 mi1.25 mi25007-5314458-1114458-1125377(Top 95%)14522(Top 96%)14522(Top 275%)
24M24.00 mi1.00 mi25163-15614522-6414522-6426462(Top 99%)15083(Top 99%)15083(Top 285%)
40K24.85 mi0.85 mi25254-9114564-4214564-4226340(Top 99%)14999(Top 99%)14999(Top 284%)
25.2M25.20 mi0.35 mi2525414563+114563+124979(Top 94%)14273(Top 94%)14273(Top 270%)
Finish26.22 mi1.02 mi25259-514560+314560+325145(Top 94%)14384(Top 95%)14384(Top 272%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×21stories
+97ft-345ft

Overall

24914

Males

14480

M18-39

14480

5K→10K

3.1 - 6.2 mi

Top 95%
×5stories
+79ft-138ft

Overall

25332

Males

14681

M18-39

14681

10K→15K

6.2 - 9.3 mi

Top 94%
×3stories
+67ft-78ft

Overall

24914

Males

14480

M18-39

14480

15K→20K

9.3 - 12.4 mi

Top 92%
×5stories
+106ft-86ft

Overall

24553

Males

14303

M18-39

14303

20K→Half

12.4 - 13.1 mi

Top 93%
×2stories
+19ft-37ft

Overall

24791

Males

14399

M18-39

14399

Half→25K

13.1 - 15.5 mi

Top 95%
×4stories
+66ft-88ft

Overall

25409

Males

14647

M18-39

14647

25K→30K

15.5 - 18.6 mi

Top 91%
×9stories
+181ft-148ft

Overall

24299

Males

14107

M18-39

14107

30K→20M

18.6 - 20.0 mi

Top 94%
×5stories
+64ft-50ft

Overall

25105

Males

14426

M18-39

14426

20M→21M

20.0 - 21.0 mi

Top 96%
×8stories
+106ft-24ft

Overall

25483

Males

14608

M18-39

14608

21M→35K

21.0 - 21.8 mi

Top 92%
×7stories
+17ft-86ft

Overall

24506

Males

14084

M18-39

14084

35K→23M

21.8 - 23.0 mi

Top 95%
×5stories
+23ft-63ft

Overall

25377

Males

14522

M18-39

14522

23M→24M

23.0 - 24.0 mi

Top 99%
×6stories
+12ft-82ft

Overall

26462

Males

15083

M18-39

15083

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

26340

Males

14999

M18-39

14999

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

24979

Males

14273

M18-39

14273

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2stories
+22ft-21ft

Overall

25145

Males

14384

M18-39

14384

Passing Analysis

Category:
Athletes Passed
574
Passed By
1857
Net Change
-1283
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23976
5K → 10K16846-830#23976#24806
10K → 15K92144-52#24806#24858
15K → 20K13766+71#24858#24787
20K → Half2127-6#24787#24793
Half → 25K30213-183#24793#24976
25K → 30K15335+118#24976#24858
30K → 20M3664-28#24858#24886
20M → 21M1692-76#24886#24962
21M → 35K3123+8#24962#24954
35K → 23M1265-53#24954#25007
23M → 24M0156-156#25007#25163
24M → 40K293-91#25163#25254
40K → 25.2M880#25254#25254
25.2M → Finish2025-5#25254#25259
TOTALS5741857-1283
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing