Nelson Sakai

Bib: 15434M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 25550
Gender (Male)
#0 / 14578
Masters (Masters Men)
#0 / 9729
Division (M55-59)
#0 / 1529
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:25
Rank: #15900
Start5K
25:25 | 8:11/mi
10K· 6.21 mi
51:19
Rank: #16100 (-200)
5K10K
25:54 | 8:20/mi
15K· 9.32 mi
1:17:35
Rank: #16068 (+32)
10K15K
26:16 | 8:27/mi
20K· 12.43 mi
1:44:38
Rank: #15936 (+132)
15K20K
27:03 | 8:42/mi
Half· 13.11 mi
1:50:15
Rank: #15851 (+85)
20KHalf
5:37 | 8:14/mi
25K· 15.53 mi
2:11:24
Rank: #15547 (+304)
Half25K
21:09 | 8:43/mi
30K· 18.64 mi
2:40:30
Rank: #15396 (+151)
25K30K
29:06 | 9:22/mi
20M
2:52:58
Rank: #15242 (+154)
30K20M
12:28 | 9:10/mi
21M
3:02:57
Rank: #15077 (+165)
20M21M
9:59 | 9:59/mi
35K· 21.75 mi
3:09:26
Rank: #14939 (+138)
21M35K
6:29 | 8:40/mi
23M
3:21:17
Rank: #14831 (+108)
35K23M
11:51 | 9:28/mi
24M
3:30:59
Rank: #14816 (+15)
23M24M
9:42 | 9:42/mi
40K· 24.85 mi
3:39:11
Rank: #14750 (+66)
24M40K
8:12 | 9:35/mi
25.2M
3:42:59
Rank: #14742 (+8)
40K25.2M
3:48 | 11:01/mi
Finish· 26.22 mi
3:51:59
Rank: #14660 (+82)
25.2MFinish
9:00 | 8:50/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
Time1:50:15
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time2:01:44
Pace9:17 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:3425:258:1125:25
8:11
-
10K
6.21 mi11:24:2851:198:1625:54
8:20
+0:09
15K
9.32 mi11:50:441:17:358:1926:16
8:27
+0:07
20K
12.43 mi12:17:471:44:388:2527:03
8:42
+0:15
Half
13.11 mi12:23:241:50:158:255:37
8:14
-0:28
25K
15.53 mi12:44:332:11:248:2821:09
8:43
+0:29
30K
18.64 mi13:13:392:40:308:3729:06
9:22
+0:39
20M
20.00 mi13:26:072:52:588:3912:28
9:10
-0:12
21M
21.00 mi13:36:063:02:578:439:59
9:59
+0:49
35K
21.75 mi13:42:353:09:268:436:29
8:40
-1:19
23M
23.00 mi13:54:263:21:178:4511:51
9:28
+0:48
24M
24.00 mi14:04:083:30:598:479:42
9:42
+0:14
40K
24.85 mi14:12:203:39:118:498:12
9:35
-0:07
25.2M
25.20 mi14:16:083:42:598:513:48
11:01
+1:26
Finish
26.22 mi14:25:083:51:598:519:00
8:50
-2:11

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

8:11 /mi

Average Pace

8:51 /mi

Slowest Pace

11:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:23:12

36% of race

Time at Steady Pace

1:16:09

33% of race

Time at Slower Pace

1:12:38

31% of race

Average Pace: 8:51 /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 mi10:58:3425:258:1125:25
8:11
#15900
10K
6.21 mi11:24:2851:198:1625:54
8:20
#16100
15K
9.32 mi11:50:441:17:358:1926:16
8:27
#16068
20K
12.43 mi12:17:471:44:388:2527:03
8:42
#15936
Half
13.11 mi12:23:241:50:158:255:37
8:14
#15851
25K
15.53 mi12:44:332:11:248:2821:09
8:43
#15547
30K
18.64 mi13:13:392:40:308:3729:06
9:22
#15396
20M
20.00 mi13:26:072:52:588:3912:28
9:10
#15242
21M
21.00 mi13:36:063:02:578:439:59
9:59
#15077
35K
21.75 mi13:42:353:09:268:436:29
8:40
#14939
23M
23.00 mi13:54:263:21:178:4511:51
9:28
#14831
24M
24.00 mi14:04:083:30:598:479:42
9:42
#14816
40K
24.85 mi14:12:203:39:118:498:12
9:35
#14750
25.2M
25.20 mi14:16:083:42:598:513:48
11:01
#14742
Finish
26.22 mi14:25:083:51:598:519:00
8:50
#14660
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi15900103551035516132(Top 63%)10457(Top 72%)10457(Top 684%)
10K6.21 mi3.10 mi16100-20010457-10210457-10216331(Top 64%)10567(Top 72%)10567(Top 691%)
15K9.32 mi3.11 mi16068+3210432+2510432+2516132(Top 63%)10457(Top 72%)10457(Top 684%)
20K12.43 mi3.11 mi15936+13210362+7010362+7015877(Top 62%)10328(Top 71%)10328(Top 675%)
Half13.11 mi0.68 mi15851+8510321+4110321+4114175(Top 55%)9576(Top 66%)9576(Top 626%)
25K15.53 mi2.42 mi15547+30410178+14310178+14314173(Top 55%)9444(Top 65%)9444(Top 618%)
30K18.64 mi3.11 mi15396+15110046+13210046+13214890(Top 58%)9503(Top 65%)9503(Top 622%)
20M20.00 mi1.36 mi15242+1549938+1089938+10812986(Top 51%)8396(Top 58%)8396(Top 549%)
21M21.00 mi1.00 mi15077+1659825+1139825+11312896(Top 50%)8139(Top 56%)8139(Top 532%)
35K21.75 mi0.75 mi14939+1389738+879738+8711629(Top 46%)7520(Top 52%)7520(Top 492%)
23M23.00 mi1.25 mi14831+1089638+1009638+10013355(Top 52%)8250(Top 57%)8250(Top 540%)
24M24.00 mi1.00 mi14816+159591+479591+4715251(Top 60%)9134(Top 63%)9134(Top 597%)
40K24.85 mi0.85 mi14750+669523+689523+6813446(Top 53%)8158(Top 56%)8158(Top 534%)
25.2M25.20 mi0.35 mi14742+89508+159508+1514525(Top 57%)8693(Top 60%)8693(Top 569%)
Finish26.22 mi1.02 mi14660+829442+669442+6613337(Top 52%)8172(Top 56%)8172(Top 534%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21stories
+97ft-345ft

Overall

16132

Males

10457

M55-59

10457

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

16331

Males

10567

M55-59

10567

10K→15K

6.2 - 9.3 mi

Top 63%
×3stories
+67ft-78ft

Overall

16132

Males

10457

M55-59

10457

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

15877

Males

10328

M55-59

10328

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

14175

Males

9576

M55-59

9576

Half→25K

13.1 - 15.5 mi

Top 55%
×4stories
+66ft-88ft

Overall

14173

Males

9444

M55-59

9444

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

14890

Males

9503

M55-59

9503

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

12986

Males

8396

M55-59

8396

20M→21M

20.0 - 21.0 mi

Top 50%
×8stories
+106ft-24ft

Overall

12896

Males

8139

M55-59

8139

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

11629

Males

7520

M55-59

7520

35K→23M

21.8 - 23.0 mi

Top 52%
×5stories
+23ft-63ft

Overall

13355

Males

8250

M55-59

8250

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

15251

Males

9134

M55-59

9134

24M→40K

24.0 - 24.9 mi

Top 53%
×1story
+6ft-20ft

Overall

13446

Males

8158

M55-59

8158

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

14525

Males

8693

M55-59

8693

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2stories
+22ft-21ft

Overall

13337

Males

8172

M55-59

8172

Passing Analysis

Category:
Athletes Passed
2669
Passed By
1429
Net Change
+1240
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15900
5K10K206406-200#15900#16100
10K15K243211+32#16100#16068
15K20K317185+132#16068#15936
20KHalf916+85#15936#15851
Half25K36864+304#15851#15547
25K30K328177+151#15547#15396
30K20M19137+154#15396#15242
20M21M20540+165#15242#15077
21M35K1479+138#15077#14939
35K23M17466+108#14939#14831
23M24M10590+15#14831#14816
24M40K12256+66#14816#14750
40K25.2M4840+8#14750#14742
25.2MFinish12442+82#14742#14660
TOTALS26691429+1240
📊

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