Boston Marathon logo
BOSTON MARATHON 2023

Brandon Seaver

Bib: 8467•M

MI

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 36%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 40%
Division (M40-44)
#0 / 2241
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:51
Rank: #8477
Start → 5K
22:51 | 7:21/mi
10K· 6.21 mi
46:31
Rank: #9886 (-1409)
5K → 10K
23:40 | 7:37/mi
15K· 9.32 mi
1:09:51
Rank: #9977 (-91)
10K → 15K
23:20 | 7:31/mi
20K· 12.43 mi
1:32:55
Rank: #9619 (+358)
15K → 20K
23:04 | 7:25/mi
Half· 13.11 mi
1:37:49
Rank: #9524 (+95)
20K → Half
4:54 | 7:11/mi
25K· 15.53 mi
1:57:26
Rank: #10134 (-610)
Half → 25K
19:37 | 8:05/mi
30K· 18.64 mi
2:21:48
Rank: #10020 (+114)
25K → 30K
24:22 | 7:51/mi
20M
2:32:34
Rank: #9959 (+61)
30K → 20M
10:46 | 7:55/mi
21M
2:41:17
Rank: #10053 (-94)
20M → 21M
8:43 | 8:43/mi
35K· 21.75 mi
2:46:58
Rank: #10000 (+53)
21M → 35K
5:41 | 7:36/mi
23M
2:56:46
Rank: #9888 (+112)
35K → 23M
9:48 | 7:50/mi
24M
3:04:16
Rank: #9754 (+134)
23M → 24M
7:30 | 7:30/mi
40K· 24.85 mi
3:11:03
Rank: #9727 (+27)
24M → 40K
6:47 | 7:56/mi
25.2M
3:13:55
Rank: #9677 (+50)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
3:21:42
Rank: #9644 (+33)
25.2M → Finish
7:47 | 7:38/mi

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
Time1:37:49
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:43:53
Pace7:55 /mi
📊Positive Split: 6.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:0522:517:2122:51
7:21
-
10K
6.21 mi11:11:4546:317:2923:40
7:37
+0:16
15K
9.32 mi11:35:051:09:517:3023:20
7:31
-0:06
20K
12.43 mi11:58:091:32:557:2923:04
7:25
-0:06
Half
13.11 mi12:03:031:37:497:284:54
7:11
-0:14
25K
15.53 mi12:22:401:57:267:3419:37
8:05
+0:54
30K
18.64 mi12:47:022:21:487:3624:22
7:51
-0:14
20M
20.00 mi12:57:482:32:347:3810:46
7:55
+0:04
21M
21.00 mi13:06:312:41:177:418:43
8:43
+0:48
35K
21.75 mi13:12:122:46:587:415:41
7:36
-1:07
23M
23.00 mi13:22:002:56:467:419:48
7:50
+0:14
24M
24.00 mi13:29:303:04:167:417:30
7:30
-0:20
40K
24.85 mi13:36:173:11:037:416:47
7:56
+0:26
25.2M
25.20 mi13:39:093:13:557:422:52
8:19
+0:23
Finish
26.22 mi13:46:563:21:427:427:47
7:38
-0:41

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

7:11 /mi

Average Pace

7:42 /mi

Slowest Pace

8:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

50:49

25% of race

Time at Steady Pace

1:07:58

34% of race

Time at Slower Pace

1:22:55

41% of race

Average Pace: 7:42 /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 mi10:48:0522:517:2122:51
7:21
#8477
10K
6.21 mi11:11:4546:317:2923:40
7:37
#9886
15K
9.32 mi11:35:051:09:517:3023:20
7:31
#9977
20K
12.43 mi11:58:091:32:557:2923:04
7:25
#9619
Half
13.11 mi12:03:031:37:497:284:54
7:11
#9524
25K
15.53 mi12:22:401:57:267:3419:37
8:05
#10134
30K
18.64 mi12:47:022:21:487:3624:22
7:51
#10020
20M
20.00 mi12:57:482:32:347:3810:46
7:55
#9959
21M
21.00 mi13:06:312:41:177:418:43
8:43
#10053
35K
21.75 mi13:12:122:46:587:415:41
7:36
#10000
23M
23.00 mi13:22:002:56:467:419:48
7:50
#9888
24M
24.00 mi13:29:303:04:167:417:30
7:30
#9754
40K
24.85 mi13:36:173:11:037:416:47
7:56
#9727
25.2M
25.20 mi13:39:093:13:557:422:52
8:19
#9677
Finish
26.22 mi13:46:563:21:427:427:47
7:38
#9644
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi84777289728910249(Top 38%)8274(Top 55%)8274(Top 369%)
10K6.21 mi3.10 mi9886-14098087-7988087-79811464(Top 43%)8858(Top 58%)8858(Top 395%)
15K9.32 mi3.11 mi9977-918149-628149-6210249(Top 38%)8274(Top 55%)8274(Top 369%)
20K12.43 mi3.11 mi9619+3587933+2167933+2168703(Top 33%)7318(Top 48%)7318(Top 327%)
Half13.11 mi0.68 mi9524+957871+627871+627749(Top 29%)6756(Top 45%)6756(Top 301%)
25K15.53 mi2.42 mi10134-6108202-3318202-33113424(Top 50%)9529(Top 63%)9529(Top 425%)
30K18.64 mi3.11 mi10020+1148108+948108+949672(Top 36%)7652(Top 50%)7652(Top 341%)
20M20.00 mi1.36 mi9959+618046+628046+629708(Top 36%)7583(Top 50%)7583(Top 338%)
21M21.00 mi1.00 mi10053-948064-188064-1811731(Top 44%)8447(Top 56%)8447(Top 377%)
35K21.75 mi0.75 mi10000+538017+478017+479231(Top 35%)7208(Top 47%)7208(Top 322%)
23M23.00 mi1.25 mi9888+1127929+887929+888598(Top 32%)6756(Top 45%)6756(Top 301%)
24M24.00 mi1.00 mi9754+1347830+997830+997702(Top 29%)6140(Top 40%)6140(Top 274%)
40K24.85 mi0.85 mi9727+277787+437787+439569(Top 36%)7116(Top 47%)7116(Top 318%)
25.2M25.20 mi0.35 mi9677+507745+427745+428356(Top 31%)6388(Top 42%)6388(Top 285%)
Finish26.22 mi1.02 mi9644+337695+507695+509526(Top 36%)7032(Top 46%)7032(Top 314%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10249

Males

8274

M40-44

8274

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

11464

Males

8858

M40-44

8858

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10249

Males

8274

M40-44

8274

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

8703

Males

7318

M40-44

7318

20K→Half

12.4 - 13.1 mi

Top 29%
×2stories
+19ft-37ft

Overall

7749

Males

6756

M40-44

6756

Half→25K

13.1 - 15.5 mi

Top 50%
×4stories
+66ft-88ft

Overall

13424

Males

9529

M40-44

9529

25K→30K

15.5 - 18.6 mi

Top 36%
×9stories
+181ft-148ft

Overall

9672

Males

7652

M40-44

7652

30K→20M

18.6 - 20.0 mi

Top 36%
×5stories
+64ft-50ft

Overall

9708

Males

7583

M40-44

7583

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

11731

Males

8447

M40-44

8447

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9231

Males

7208

M40-44

7208

35K→23M

21.8 - 23.0 mi

Top 32%
×5stories
+23ft-63ft

Overall

8598

Males

6756

M40-44

6756

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

7702

Males

6140

M40-44

6140

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9569

Males

7116

M40-44

7116

40K→25.2M

24.9 - 25.2 mi

Top 31%
×1story
+13ft-16ft

Overall

8356

Males

6388

M40-44

6388

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2stories
+22ft-21ft

Overall

9526

Males

7032

M40-44

7032

Passing Analysis

Category:
Athletes Passed
1660*
Passed By
2822
Net Change
-1167
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8477
5K → 10K241433-1409#8477#9886
10K → 15K149239-91#9886#9977
15K → 20K384*26+358#9977#9619
20K → Half961+95#9619#9524
Half → 25K35643-610#9524#10134
25K → 30K217*103+114#10134#10020
30K → 20M119*58+61#10020#9959
20M → 21M59151-94#9959#10053
21M → 35K79*26+53#10053#10000
35K → 23M131*19+112#10000#9888
23M → 24M1439+134#9888#9754
24M → 40K76*49+27#9754#9727
40K → 25.2M6212+50#9727#9677
25.2M → Finish86*53+33#9677#9644
TOTALS1660*2822-1167

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

📊

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