Boston Marathon logo
BOSTON MARATHON 2023

Brendan Washburn

Bib: 5779•M

CA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Division (M18-39)
#0 / 5285
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:02
Rank: #4348
Start → 5K
21:02 | 6:46/mi
10K· 6.21 mi
41:59
Rank: #4559 (-211)
5K → 10K
20:57 | 6:45/mi
15K· 9.32 mi
1:03:07
Rank: #4716 (-157)
10K → 15K
21:08 | 6:48/mi
20K· 12.43 mi
1:24:21
Rank: #4702 (+14)
15K → 20K
21:14 | 6:50/mi
Half· 13.11 mi
1:29:01
Rank: #4753 (-51)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:45:30
Rank: #4609 (+144)
Half → 25K
16:29 | 6:48/mi
30K· 18.64 mi
2:07:13
Rank: #4523 (+86)
25K → 30K
21:43 | 6:59/mi
20M
2:16:39
Rank: #4444 (+79)
30K → 20M
9:26 | 6:57/mi
21M
2:23:58
Rank: #4365 (+79)
20M → 21M
7:19 | 7:19/mi
35K· 21.75 mi
2:28:49
Rank: #4237 (+128)
21M → 35K
4:51 | 6:29/mi
23M
2:37:09
Rank: #4041 (+196)
35K → 23M
8:20 | 6:39/mi
24M
2:43:32
Rank: #3849 (+192)
23M → 24M
6:23 | 6:23/mi
40K· 24.85 mi
2:49:13
Rank: #3725 (+124)
24M → 40K
5:41 | 6:39/mi
25.2M
2:51:35
Rank: #3640 (+85)
40K → 25.2M
2:22 | 6:52/mi
Finish· 26.22 mi
2:58:05
Rank: #3514 (+126)
25.2M → Finish
6:30 | 6:23/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 Half⚖️ Balanced
Distance13.11 mi
Time1:29:01
Pace6:47 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:04
Pace6:48 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:4721:026:4621:02
6:46
-
10K
6.21 mi10:44:4441:596:4520:57
6:45
-0:01
15K
9.32 mi11:05:521:03:076:4621:08
6:48
+0:03
20K
12.43 mi11:27:061:24:216:4721:14
6:50
+0:02
Half
13.11 mi11:31:461:29:016:474:40
6:50
0:00
25K
15.53 mi11:48:151:45:306:4716:29
6:48
-0:02
30K
18.64 mi12:09:582:07:136:4921:43
6:59
+0:11
20M
20.00 mi12:19:242:16:396:509:26
6:57
-0:02
21M
21.00 mi12:26:432:23:586:517:19
7:19
+0:22
35K
21.75 mi12:31:342:28:496:514:51
6:29
-0:50
23M
23.00 mi12:39:542:37:096:508:20
6:39
+0:10
24M
24.00 mi12:46:172:43:326:496:23
6:23
-0:16
40K
24.85 mi12:51:582:49:136:485:41
6:39
+0:16
25.2M
25.20 mi12:54:202:51:356:492:22
6:52
+0:13
Finish
26.22 mi13:00:502:58:056:486:30
6:23
-0:29

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

6:23 /mi

Average Pace

6:48 /mi

Slowest Pace

7:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:46

96% of race

Time at Steady Pace

7:19

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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 mi10:23:4721:026:4621:02
6:46
#4348
10K
6.21 mi10:44:4441:596:4520:57
6:45
#4559
15K
9.32 mi11:05:521:03:076:4621:08
6:48
#4716
20K
12.43 mi11:27:061:24:216:4721:14
6:50
#4702
Half
13.11 mi11:31:461:29:016:474:40
6:50
#4753
25K
15.53 mi11:48:151:45:306:4716:29
6:48
#4609
30K
18.64 mi12:09:582:07:136:4921:43
6:59
#4523
20M
20.00 mi12:19:242:16:396:509:26
6:57
#4444
21M
21.00 mi12:26:432:23:586:517:19
7:19
#4365
35K
21.75 mi12:31:342:28:496:514:51
6:29
#4237
23M
23.00 mi12:39:542:37:096:508:20
6:39
#4041
24M
24.00 mi12:46:172:43:326:496:23
6:23
#3849
40K
24.85 mi12:51:582:49:136:485:41
6:39
#3725
25.2M
25.20 mi12:54:202:51:356:492:22
6:52
#3640
Finish
26.22 mi13:00:502:58:056:486:30
6:23
#3514
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4348405940595117(Top 19%)4734(Top 31%)4734(Top 90%)
10K6.21 mi3.10 mi4559-2114258-1994258-1994743(Top 18%)4407(Top 29%)4407(Top 83%)
15K9.32 mi3.11 mi4716-1574391-1334391-1335117(Top 19%)4734(Top 31%)4734(Top 90%)
20K12.43 mi3.11 mi4702+144388+34388+34746(Top 18%)4408(Top 29%)4408(Top 83%)
Half13.11 mi0.68 mi4753-514428-404428-405498(Top 21%)5058(Top 33%)5058(Top 96%)
25K15.53 mi2.42 mi4609+1444302+1264302+1264113(Top 15%)3853(Top 25%)3853(Top 73%)
30K18.64 mi3.11 mi4523+864223+794223+794272(Top 16%)3974(Top 26%)3974(Top 75%)
20M20.00 mi1.36 mi4444+794149+744149+743659(Top 14%)3411(Top 22%)3411(Top 65%)
21M21.00 mi1.00 mi4365+794078+714078+713681(Top 14%)3412(Top 22%)3412(Top 65%)
35K21.75 mi0.75 mi4237+1283964+1143964+1142356(Top 9%)2236(Top 15%)2236(Top 42%)
23M23.00 mi1.25 mi4041+1963787+1773787+1772003(Top 8%)1898(Top 13%)1898(Top 36%)
24M24.00 mi1.00 mi3849+1923615+1723615+1721642(Top 6%)1555(Top 10%)1555(Top 29%)
40K24.85 mi0.85 mi3725+1243502+1133502+1132119(Top 8%)1983(Top 13%)1983(Top 38%)
25.2M25.20 mi0.35 mi3640+853425+773425+771365(Top 5%)1295(Top 9%)1295(Top 25%)
Finish26.22 mi1.02 mi3514+1263309+1163309+1161942(Top 7%)1813(Top 12%)1813(Top 34%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5117

Males

4734

M18-39

4734

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

4743

Males

4407

M18-39

4407

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5117

Males

4734

M18-39

4734

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4746

Males

4408

M18-39

4408

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5498

Males

5058

M18-39

5058

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4113

Males

3853

M18-39

3853

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4272

Males

3974

M18-39

3974

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3659

Males

3411

M18-39

3411

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

3681

Males

3412

M18-39

3412

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2356

Males

2236

M18-39

2236

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2003

Males

1898

M18-39

1898

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1642

Males

1555

M18-39

1555

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2119

Males

1983

M18-39

1983

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1365

Males

1295

M18-39

1295

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1942

Males

1813

M18-39

1813

Passing Analysis

Category:
Athletes Passed
1738
Passed By
904
Net Change
+834
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4348
5K → 10K131342-211#4348#4559
10K → 15K72229-157#4559#4716
15K → 20K10591+14#4716#4702
20K → Half960-51#4702#4753
Half → 25K17733+144#4753#4609
25K → 30K17589+86#4609#4523
30K → 20M9920+79#4523#4444
20M → 21M10324+79#4444#4365
21M → 35K1291+128#4365#4237
35K → 23M1982+196#4237#4041
23M → 24M1953+192#4041#3849
24M → 40K1262+124#3849#3725
40K → 25.2M850+85#3725#3640
25.2M → Finish1348+126#3640#3514
TOTALS1738904+834
📊

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