Katherine Nierva

Bib: 15361 F

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 28404

Top 44%

Gender (Female)

#0 / 12228

Top 28%

Masters (Masters Women)

#0 / 6759

Top 14%

Division (F40-44)

#0 / 1718

Top 29%

Race Day Weather

50°/40°F

broken clouds

Race Timeline

Ribbon color based on

FasterSteadySlower· vs. your average pace

Start

0:00

Race begins

469 ft elev

5K· 3.11 mi

7:54/mi

24:33

↑ 97 ft↓ 345 ft1.5% grade

220 ft elev

10K· 6.21 mi

7:58/mi

49:17

↑ 79 ft↓ 138 ft0.4% grade

157 ft elev

15K· 9.32 mi

7:56/mi

1:13:56

↑ 67 ft↓ 78 ft

146 ft elev

20K· 12.43 mi

7:51/mi

1:38:19

↑ 106 ft↓ 86 ft0.1% grade

165 ft elev

Half· 13.11 mi

7:45/mi

1:43:36

↑ 19 ft↓ 37 ft0.5% grade

148 ft elev

25K· 15.53 mi

7:48/mi

2:02:30

↑ 66 ft↓ 88 ft0.2% grade

127 ft elev

30K· 18.64 mi

8:01/mi

2:27:24

↑ 181 ft↓ 148 ft0.2% grade

138 ft elev

20M

8:04/mi

2:38:22

↑ 64 ft↓ 50 ft0.2% grade

148 ft elev

21M

8:22/mi

2:46:44

↑ 106 ft↓ 24 ft1.6% grade

227 ft elev

35K· 21.75 mi

7:45/mi

2:52:32

↑ 17 ft↓ 86 ft1.7% grade

156 ft elev

23M

7:58/mi

3:02:30

↑ 23 ft↓ 63 ft0.6% grade

116 ft elev

24M

7:45/mi

3:10:15

↓ 82 ft1.3% grade

34 ft elev

40K· 24.85 mi

7:49/mi

3:16:56

↓ 20 ft0.3% grade

20 ft elev

25.2M

8:30/mi

3:19:52

↑ 13 ft↓ 16 ft0.2% grade

18 ft elev

Finish· 26.22 mi

7:32/mi

3:27:33

↑ 22 ft↓ 21 ft

17 ft elev

Course Elevation

7–469 ft

≈

×2stacked redwood trees

•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half

1:43:367:54 /mi⚖️ balanced

2nd Half

1:43:577:56 /mi⚖️ balanced

Even split — consistent pacing between halves

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See your splits, ranks & AI insights.

Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
5K	24:33	7:54	3.11 mi	24:33	7:54	-
10K	49:17	7:56	3.10 mi	24:44	7:58	+0:04
15K	1:13:56	7:56	3.11 mi	24:39	7:56	-0:02
20K	1:38:19	7:55	3.11 mi	24:23	7:51	-0:05
Half(13.11 mi)	1:43:36	7:54	0.68 mi	5:17	7:45	-0:06
25K	2:02:30	7:53	2.42 mi	18:54	7:48	+0:03
30K	2:27:24	7:54	3.11 mi	24:54	8:01	+0:13
20M	2:38:22	7:55	1.36 mi	10:58	8:04	+0:03
21M	2:46:44	7:56	1.00 mi	8:22	8:22	+0:18
35K	2:52:32	7:56	0.75 mi	5:48	7:45	-0:37
23M	3:02:30	7:56	1.25 mi	9:58	7:58	+0:13
24M	3:10:15	7:56	1.00 mi	7:45	7:45	-0:13
40K	3:16:56	7:55	0.85 mi	6:41	7:49	+0:04
25.2M	3:19:52	7:56	0.35 mi	2:56	8:30	+0:41
Finish(26.22 mi)	3:27:33	7:55	1.02 mi	7:41	7:32	-0:58

Trend:

Faster pace

Steady pace

Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:32 /mi

Average Pace

7:55 /mi

Slowest Pace

8:30 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

3:16:15

95% of race

Time at Steady Pace

11:18

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:55 /mi

Loading chart...

Faster pace (< avg)

Steady pace (≈ avg)

Slower pace (> avg)

Heatmap

0mi6.6mi13.1mi19.7mi26.2mi

Pace:

Faster

Steady

Slower

Checkpoint and Segment Rankings

Checkpoint	Seg. Dist	Overall	Females	F40-44	Seg. Overall	Seg. Females	Seg. F40-44
5K	3.11 mi	15708	4960	4960	15518	4863	4863
10K	3.10 mi	15956-248	5108-148	5108-148	16159	5213	5213
15K	3.11 mi	15777+179	5001+107	5001+107	15518	4863	4863
20K	3.11 mi	15198+579	4693+308	4693+308	13669	3908	3908
Half(13.11 mi)	0.68 mi	15120+78	4648+45	4648+45	13811	3950	3950
25K	2.42 mi	14599+521	4390+258	4390+258	12323	3290	3290
30K	3.11 mi	13937+662	4066+324	4066+324	11507	3043	3043
20M	1.36 mi	13663+274	3943+123	3943+123	10929	2916	2916
21M	1.00 mi	13386+277	3824+119	3824+119	9689	2476	2476
35K	0.75 mi	13269+117	3777+47	3777+47	10531	2882	2882
23M	1.25 mi	13042+227	3694+83	3694+83	9785	2641	2641
24M	1.00 mi	12857+185	3621+73	3621+73	9496	2573	2573
40K	0.85 mi	12672+185	3543+78	3543+78	8942	2439	2439
25.2M	0.35 mi	12605+67	3524+19	3524+19	8927	2511	2511
Finish(26.22 mi)	1.02 mi	12464+141	3483+41	3483+41	9529	2784	2784

2784

Passing Analysis

Category:

▲Net Change

0 passed by0 passed

Segment	Movement	Rank
Start → 5K	-	#15708
5K → 10K	464216-248	#15708 → #15956
10K → 15K	119298+179	#15956 → #15777
15K → 20K	13592+579	#15777 → #15198
20K → Half	1189+78	#15198 → #15120
Half → 25K	6527+521	#15120 → #14599
25K → 30K	14676+662	#14599 → #13937
30K → 20M	9283+274	#13937 → #13663
20M → 21M	4281+277	#13663 → #13386
21M → 35K	11128+117	#13386 → #13269
35K → 23M	19246+227	#13269 → #13042
23M → 24M	8193+185	#13042 → #12857
24M → 40K	6191+185	#12857 → #12672
40K → 25.2M	875+67	#12672 → #12605
25.2M → Finish	13154+141	#12605 → #12464
TOTALS	7053949+3244	#15708 → #12464

Passing Visualized

Category:

Passing Circle

Position Flow

Race Lanes

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Results processed about 1 month ago

Public Race Data

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Race managed by

Boston Athletic Association

Race timed by

Mika Timing