John Sim

Bib: 13472M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 29%
Gender (Male)
#0 / 16105
Top 42%
Masters (Masters Men)
#0 / 10463
Top 30%
Division (M50-54)
#0 / 1996
Top 27%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:30
Rank: #12759
Start5K
7:34/mi
23:30 split
10K· 6.21 mi
46:31
Rank: #12003 (+756)
5K10K
7:25/mi
23:01 split
15K· 9.32 mi
1:09:54
Rank: #11978 (+25)
10K15K
7:32/mi
23:23 split
20K· 12.43 mi
1:32:47
Rank: #11359 (+619)
15K20K
7:22/mi
22:53 split
Half· 13.11 mi
1:37:46
Rank: #11286 (+73)
20KHalf
7:18/mi
4:59 split
25K· 15.53 mi
1:55:29
Rank: #10726 (+560)
Half25K
7:18/mi
17:43 split
30K· 18.64 mi
2:18:37
Rank: #10016 (+710)
25K30K
7:27/mi
23:08 split
20M
2:28:42
Rank: #9670 (+346)
30K20M
7:25/mi
10:05 split
21M
2:36:19
Rank: #9348 (+322)
20M21M
7:37/mi
7:37 split
35K· 21.75 mi
2:41:42
Rank: #9196 (+152)
21M35K
7:12/mi
5:23 split
23M
2:50:55
Rank: #8922 (+274)
35K23M
7:22/mi
9:13 split
24M
2:58:06
Rank: #8704 (+218)
23M24M
7:11/mi
7:11 split
40K· 24.85 mi
3:04:18
Rank: #8494 (+210)
24M40K
7:15/mi
6:12 split
25.2M
3:07:00
Rank: #8399 (+95)
40K25.2M
7:50/mi
2:42 split
Finish· 26.22 mi
3:14:02
Rank: #8227 (+172)
25.2MFinish
6:54/mi
7:02 split

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:37:46
Pace7:27 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:16
Pace7:21 /mi
📊Negative Split: 1.5% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:5023:307:3423:30
7:34
-
10K
6.21 mi11:15:5146:317:2923:01
7:25
-0:09
15K
9.32 mi11:39:141:09:547:3023:23
7:32
+0:07
20K
12.43 mi12:02:071:32:477:2822:53
7:22
-0:10
Half
13.11 mi12:07:061:37:467:274:59
7:18
-0:04
25K
15.53 mi12:24:491:55:297:2617:43
7:18
0:00
30K
18.64 mi12:47:572:18:377:2623:08
7:27
+0:09
20M
20.00 mi12:58:022:28:427:2610:05
7:25
-0:02
21M
21.00 mi13:05:392:36:197:277:37
7:37
+0:12
35K
21.75 mi13:11:022:41:427:265:23
7:12
-0:25
23M
23.00 mi13:20:152:50:557:269:13
7:22
+0:10
24M
24.00 mi13:27:262:58:067:257:11
7:11
-0:11
40K
24.85 mi13:33:383:04:187:256:12
7:15
+0:04
25.2M
25.20 mi13:36:203:07:007:252:42
7:50
+0:35
Finish
26.22 mi13:43:223:14:027:247:02
6:54
-0:56

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

6:54 /mi

Average Pace

7:24 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:43

95% of race

Time at Steady Pace

10:19

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:24 /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 mi10:52:5023:307:3423:30
7:34
#12759
10K
6.21 mi11:15:5146:317:2923:01
7:25
#12003
15K
9.32 mi11:39:141:09:547:3023:23
7:32
#11978
20K
12.43 mi12:02:071:32:477:2822:53
7:22
#11359
Half
13.11 mi12:07:061:37:467:274:59
7:18
#11286
25K
15.53 mi12:24:491:55:297:2617:43
7:18
#10726
30K
18.64 mi12:47:572:18:377:2623:08
7:27
#10016
20M
20.00 mi12:58:022:28:427:2610:05
7:25
#9670
21M
21.00 mi13:05:392:36:197:277:37
7:37
#9348
35K
21.75 mi13:11:022:41:427:265:23
7:12
#9196
23M
23.00 mi13:20:152:50:557:269:13
7:22
#8922
24M
24.00 mi13:27:262:58:067:257:11
7:11
#8704
40K
24.85 mi13:33:383:04:187:256:12
7:15
#8494
25.2M
25.20 mi13:36:203:07:007:252:42
7:50
#8399
Finish
26.22 mi13:43:223:14:027:247:02
6:54
#8227
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi127599527952711977(Top 42%)9050(Top 56%)9050(Top 453%)
10K6.21 mi3.10 mi12003+7569152+3759152+37511233(Top 40%)8761(Top 54%)8761(Top 439%)
15K9.32 mi3.11 mi11978+259122+309122+3011977(Top 42%)9050(Top 56%)9050(Top 453%)
20K12.43 mi3.11 mi11359+6198794+3288794+3289572(Top 34%)7772(Top 48%)7772(Top 389%)
Half13.11 mi0.68 mi11286+738758+368758+369934(Top 35%)7958(Top 49%)7958(Top 399%)
25K15.53 mi2.42 mi10726+5608450+3088450+3088391(Top 30%)6985(Top 43%)6985(Top 350%)
30K18.64 mi3.11 mi10016+7108029+4218029+4217329(Top 26%)6167(Top 38%)6167(Top 309%)
20M20.00 mi1.36 mi9670+3467800+2297800+2296470(Top 23%)5496(Top 34%)5496(Top 275%)
21M21.00 mi1.00 mi9348+3227591+2097591+2095168(Top 18%)4489(Top 28%)4489(Top 225%)
35K21.75 mi0.75 mi9196+1527484+1077484+1076505(Top 23%)5371(Top 33%)5371(Top 269%)
23M23.00 mi1.25 mi8922+2747286+1987286+1985783(Top 20%)4832(Top 30%)4832(Top 242%)
24M24.00 mi1.00 mi8704+2187130+1567130+1565662(Top 20%)4687(Top 29%)4687(Top 235%)
40K24.85 mi0.85 mi8494+2106973+1576973+1575289(Top 19%)4390(Top 27%)4390(Top 220%)
25.2M25.20 mi0.35 mi8399+956897+766897+764900(Top 17%)4020(Top 25%)4020(Top 201%)
Finish26.22 mi1.02 mi8227+1726761+1366761+1365038(Top 18%)4126(Top 26%)4126(Top 207%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11977

Males

9050

M50-54

9050

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

11233

Males

8761

M50-54

8761

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11977

Males

9050

M50-54

9050

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

9572

Males

7772

M50-54

7772

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9934

Males

7958

M50-54

7958

Half→25K

13.1 - 15.5 mi

Top 30%
×4story building
+66ft-88ft

Overall

8391

Males

6985

M50-54

6985

25K→30K

15.5 - 18.6 mi

Top 26%
×9story building
+181ft-148ft

Overall

7329

Males

6167

M50-54

6167

30K→20M

18.6 - 20.0 mi

Top 23%
×5story building
+64ft-50ft

Overall

6470

Males

5496

M50-54

5496

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

5168

Males

4489

M50-54

4489

21M→35K

21.0 - 21.8 mi

Top 23%
×7story building
+17ft-86ft

Overall

6505

Males

5371

M50-54

5371

35K→23M

21.8 - 23.0 mi

Top 20%
×5story building
+23ft-63ft

Overall

5783

Males

4832

M50-54

4832

23M→24M

23.0 - 24.0 mi

Top 20%
×6story building
+12ft-82ft

Overall

5662

Males

4687

M50-54

4687

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5289

Males

4390

M50-54

4390

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4900

Males

4020

M50-54

4020

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2story building
+22ft-21ft

Overall

5038

Males

4126

M50-54

4126

Passing Analysis

Category:
Athletes Passed
4823*
Passed By
291
Net Change
+4532
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12759
5K10K80953+756#12759#12003
10K15K198173+25#12003#11978
15K20K63011+619#11978#11359
20KHalf796+73#11359#11286
Half25K5633+560#11286#10726
25K30K713*3+710#10726#10016
30K20M3493+346#10016#9670
20M21M3220+322#9670#9348
21M35K1597+152#9348#9196
35K23M2806+274#9196#8922
23M24M2235+218#8922#8704
24M40K2144+210#8704#8494
40K25.2M972+95#8494#8399
25.2MFinish18715+172#8399#8227
TOTALS4823*291+4532

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

📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing