Richard Sieboldt

Brookline, MA

Bib: 4444 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 15907
Gender (Male)
#0 / 9934
Masters (Masters Men)
#0 / 4070
Division (M45-49)
#0 / 933
Race Day Weather
43°/33°F
overcast clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
11:04/mi
34:24
279164
10K· 6.21 mi
10:57/mi
1:08:26
103217
15K· 9.32 mi
12:46/mi
1:48:06
5155
21K· 13.05 mi
10:48/mi
2:28:23
2037
25K· 15.53 mi
10:31/mi
2:54:31
35
30K· 18.64 mi
12:06/mi
3:32:07
5857
35K· 21.75 mi
13:07/mi
4:12:53
9892
40K· 24.85 mi
14:26/mi
4:57:45
3653
Finish· 26.22 mi
15:16/mi
5:18:35
8024
Course Elevation
3237 ft
×20story building
764 ft climb · 717 ft descent

The Course

Half Splits

1st Half· via 21K
2:28:2311:22 /mi⚡ faster
2nd Half
2:50:1112:55 /mi+14.7%
Positive split — 14.7% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
34:2411:043.11 mi34:24
11:04
-
10K
1:08:2611:013.10 mi34:02
10:57
-0:07
15K
1:48:0611:363.11 mi39:40
12:46
+1:49
21K
2:28:2311:223.73 mi40:17
10:48
-1:58
25K
2:54:3111:142.48 mi26:08
10:31
-0:17
30K
3:32:0711:233.11 mi37:36
12:06
+1:35
35K
4:12:5311:383.11 mi40:46
13:07
+1:01
40K
4:57:4511:593.10 mi44:52
14:26
+1:19
Finish(26.22 mi)
5:18:3512:101.37 mi20:50
15:16
+0:50
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

10:31 /mi

Average Pace

12:10 /mi

Slowest Pace

15:16 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:14:51

42% of race

Time at Steady Pace

1:17:16

24% of race

Time at Slower Pace

1:46:28

33% of race

Average Pace: 12:09 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi118148011698149559553870
10K3.10 mi12380-5668301-290728-30129238564758
15K3.11 mi13726-13469009-708808-80149559553870
21K3.73 mi12822+9048528+481759+49105887296626
25K2.48 mi12272+5508180+348725+3498696707580
30K3.11 mi12033+2398009+171714+11111677326662
35K3.11 mi12025+87941+68705+9120447629680
40K3.10 mi12255-2308005-64711-6131198214738
Finish(26.22 mi)1.37 mi12467-2128100-95725-14142358886810

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 94%
×18story building
+279ft-164ft

Overall

14955

Males

9553

M45-49

9553

5K→10K

3.1 - 6.2 mi

Top 81%
×11story building
+103ft-217ft

Overall

12923

Males

8564

M45-49

8564

10K→15K

6.2 - 9.3 mi

Top 94%
×3story building
+51ft-55ft

Overall

14955

Males

9553

M45-49

9553

15K→21K

9.3 - 13.1 mi

Top 67%
×1story
+20ft-37ft

Overall

10588

Males

7296

M45-49

7296

21K→25K

13.1 - 15.5 mi

Top 62%
×2story building
+35ft-8ft

Overall

9869

Males

6707

M45-49

6707

25K→30K

15.5 - 18.6 mi

Top 70%
×2story building
+58ft-57ft

Overall

11167

Males

7326

M45-49

7326

30K→35K

18.6 - 21.8 mi

Top 76%
×2story building
+98ft-92ft

Overall

12044

Males

7629

M45-49

7629

35K→40K

21.8 - 24.9 mi

Top 82%
×2story building
+36ft-53ft

Overall

13119

Males

8214

M45-49

8214

40K→Finish

24.9 - 26.2 mi

Top 89%
×5story building
+80ft-24ft

Overall

14235

Males

8886

M45-49

8886

Passing Analysis

Category:
Net Change
0
0 passed by0* passed
SegmentMovementRank
Start → 5K-#11814
5K10K
64983*-566
#11814 #12380
10K15K
137226*-1346
#12380 #13726
15K21K
5909*+904
#13726 #12822
21K25K
8558*+550
#12822 #12272
25K30K
90329*+239
#12272 #12033
30K35K
195203*+8
#12033 #12025
35K40K
32898*-230
#12025 #12255
40KFinish
23018*-212
#12255 #12467
TOTALS
28772224*-653
#11814 #12467

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

Passing Visualized

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Timing Productions