Boston Marathon logo
BOSTON MARATHON 2023

Brandon Nelson

Bib: 14676•M

NY

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 38%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 42%
Division (M50-54)
#0 / 2052
Top 42%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:02/mi
24:57
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
49:07
↑ 79↓ 1380.4%
15K· 9.32 mi
7:54/mi
1:13:41
↑ 67↓ 78
20K· 12.43 mi
7:57/mi
1:38:22
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:43:47
↑ 19↓ 370.5%
25K· 15.53 mi
8:01/mi
2:03:14
↑ 66↓ 880.2%
30K· 18.64 mi
7:58/mi
2:27:59
↑ 181↓ 1480.2%
20M
7:43/mi
2:38:28
↑ 64↓ 500.2%
21M
8:06/mi
2:46:34
↑ 106↓ 241.6%
35K· 21.75 mi
7:08/mi
2:51:54
↑ 17↓ 861.7%
23M
7:15/mi
3:00:59
↑ 23↓ 630.6%
24M
6:53/mi
3:07:52
↓ 821.3%
40K· 24.85 mi
7:06/mi
3:13:56
↓ 200.3%
25.2M
7:35/mi
3:16:33
↑ 13↓ 160.2%
Finish· 26.22 mi
6:40/mi
3:23:21
↑ 22↓ 21

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
Distance13.11 mi
Time1:43:47
Pace7:55 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:34
Pace7:36 /mi
📊Negative Split: 4.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:5124:578:0224:57
8:02
-
10K
6.21 mi11:18:0149:077:5424:10
7:47
-0:15
15K
9.32 mi11:42:351:13:417:5424:34
7:54
+0:07
20K
12.43 mi12:07:161:38:227:5524:41
7:57
+0:03
Half
13.11 mi12:12:411:43:477:555:25
7:56
-0:01
25K
15.53 mi12:32:082:03:147:5619:27
8:01
+0:05
30K
18.64 mi12:56:532:27:597:5624:45
7:58
-0:03
20M
20.00 mi13:07:222:38:287:5510:29
7:43
-0:15
21M
21.00 mi13:15:282:46:347:568:06
8:06
+0:23
35K
21.75 mi13:20:482:51:547:545:20
7:08
-0:58
23M
23.00 mi13:29:533:00:597:529:05
7:15
+0:07
24M
24.00 mi13:36:463:07:527:506:53
6:53
-0:22
40K
24.85 mi13:42:503:13:567:486:04
7:06
+0:13
25.2M
25.20 mi13:45:273:16:337:482:37
7:35
+0:29
Finish
26.22 mi13:52:153:23:217:466:48
6:40
-0:55

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

6:40 /mi

Average Pace

7:46 /mi

Slowest Pace

8:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

34:10

17% of race

Time at Steady Pace

1:56:41

57% of race

Time at Slower Pace

52:30

26% of race

Average Pace: 7:45 /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 mi10:53:5124:578:0224:57
8:02
#14217
10K
6.21 mi11:18:0149:077:5424:10
7:47
#13628
15K
9.32 mi11:42:351:13:417:5424:34
7:54
#13613
20K
12.43 mi12:07:161:38:227:5524:41
7:57
#13436
Half
13.11 mi12:12:411:43:477:555:25
7:56
#13447
25K
15.53 mi12:32:082:03:147:5619:27
8:01
#13322
30K
18.64 mi12:56:532:27:597:5624:45
7:58
#12806
20M
20.00 mi13:07:222:38:287:5510:29
7:43
#12404
21M
21.00 mi13:15:282:46:347:568:06
8:06
#12107
35K
21.75 mi13:20:482:51:547:545:20
7:08
#11874
23M
23.00 mi13:29:533:00:597:529:05
7:15
#11378
24M
24.00 mi13:36:463:07:527:506:53
6:53
#10956
40K
24.85 mi13:42:503:13:567:486:04
7:06
#10644
25.2M
25.20 mi13:45:273:16:337:482:37
7:35
#10523
Finish
26.22 mi13:52:153:23:217:466:48
6:40
#10153
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi14217100341003413593(Top 51%)9738(Top 64%)9738(Top 475%)
10K6.21 mi3.10 mi13628+5899784+2509784+25012917(Top 49%)9511(Top 63%)9511(Top 463%)
15K9.32 mi3.11 mi13613+159770+149770+1413593(Top 51%)9738(Top 64%)9738(Top 475%)
20K12.43 mi3.11 mi13436+1779677+939677+9312969(Top 49%)9415(Top 62%)9415(Top 459%)
Half13.11 mi0.68 mi13447-119679-29679-213805(Top 52%)9799(Top 65%)9799(Top 478%)
25K15.53 mi2.42 mi13322+1259607+729607+7212898(Top 48%)9304(Top 61%)9304(Top 453%)
30K18.64 mi3.11 mi12806+5169355+2529355+25210609(Top 40%)8144(Top 54%)8144(Top 397%)
20M20.00 mi1.36 mi12404+4029170+1859170+1858296(Top 31%)6781(Top 45%)6781(Top 330%)
21M21.00 mi1.00 mi12107+2979020+1509020+1508008(Top 30%)6485(Top 43%)6485(Top 316%)
35K21.75 mi0.75 mi11874+2338904+1168904+1166114(Top 23%)5322(Top 35%)5322(Top 259%)
23M23.00 mi1.25 mi11378+4968656+2488656+2485086(Top 19%)4535(Top 30%)4535(Top 221%)
24M24.00 mi1.00 mi10956+4228438+2188438+2184119(Top 15%)3750(Top 25%)3750(Top 183%)
40K24.85 mi0.85 mi10644+3128252+1868252+1864376(Top 16%)3892(Top 26%)3892(Top 190%)
25.2M25.20 mi0.35 mi10523+1218177+758177+754370(Top 16%)3840(Top 25%)3840(Top 187%)
Finish26.22 mi1.02 mi10153+3707967+2107967+2103391(Top 13%)3049(Top 20%)3049(Top 149%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

13593

Males

9738

M50-54

9738

5K→10K

3.1 - 6.2 mi

Top 49%
×5story building
+79ft-138ft

Overall

12917

Males

9511

M50-54

9511

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

13593

Males

9738

M50-54

9738

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

12969

Males

9415

M50-54

9415

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13805

Males

9799

M50-54

9799

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

12898

Males

9304

M50-54

9304

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

10609

Males

8144

M50-54

8144

30K→20M

18.6 - 20.0 mi

Top 31%
×5story building
+64ft-50ft

Overall

8296

Males

6781

M50-54

6781

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

8008

Males

6485

M50-54

6485

21M→35K

21.0 - 21.8 mi

Top 23%
×7story building
+17ft-86ft

Overall

6114

Males

5322

M50-54

5322

35K→23M

21.8 - 23.0 mi

Top 19%
×5story building
+23ft-63ft

Overall

5086

Males

4535

M50-54

4535

23M→24M

23.0 - 24.0 mi

Top 15%
×6story building
+12ft-82ft

Overall

4119

Males

3750

M50-54

3750

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4376

Males

3892

M50-54

3892

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4370

Males

3840

M50-54

3840

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2story building
+22ft-21ft

Overall

3391

Males

3049

M50-54

3049

Passing Analysis

Category:
Athletes Passed
4577
Passed By
513
Net Change
+4064
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14217
5K → 10K697108+589#14217#13628
10K → 15K191176+15#13628#13613
15K → 20K26992+177#13613#13436
20K → Half2536-11#13436#13447
Half → 25K19873+125#13447#13322
25K → 30K53721+516#13322#12806
30K → 20M4042+402#12806#12404
20M → 21M3014+297#12404#12107
21M → 35K2330+233#12107#11874
35K → 23M4960+496#11874#11378
23M → 24M4220+422#11378#10956
24M → 40K3120+312#10956#10644
40K → 25.2M1221+121#10644#10523
25.2M → Finish3700+370#10523#10153
TOTALS4577513+4064
📊

Passing Visuals

Category:
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

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing