Mason Henderson

Boulder, CO

Bib: 25398 M 43

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 61036

Gender (Male)

#0 / 31978

Masters (Masters Men)

#0 / 14572

Division (M40-44)

#0 / 3949

Race Day Weather

50°/40°F

clear sky

Race Timeline

Ribbon color based on

FasterSteadySlower· vs. your average pace

Mile 1 · 259 ft

Mile 2 · 64 ft

Start

0:00

Race begins

118 ft elev

10:22/mi

31:06

↑ 182 ft↓ 221 ft0.2% grade

79 ft elev

5K· 3.11 mi

10:55/mi

32:16

→ flat

76 ft elev

10:18/mi

41:28

↑ 23 ft↓ 16 ft0.1% grade

84 ft elev

10:18/mi

51:46

↑ 13 ft↓ 30 ft0.3% grade

70 ft elev

10:24/mi

1:02:10

↑ 16 ft↓ 36 ft0.4% grade

47 ft elev

10K· 6.21 mi

10:04/mi

1:04:19

→ flat0.6% grade

58 ft elev

10:09/mi

1:12:18

↓ 30 ft0.6% grade

33 ft elev

12:08/mi

1:24:26

↑ 30 ft0.4% grade

54 ft elev

10:53/mi

1:35:19

↑ 61 ft↓ 33 ft0.5% grade

81 ft elev

15K· 9.32 mi

10:21/mi

1:38:38

↓ 13 ft0.8% grade

66 ft elev

10M

10:46/mi

1:45:57

↓ 36 ft0.9% grade

33 ft elev

11M

10:30/mi

1:56:27

↑ 43 ft0.7% grade

72 ft elev

12M

10:44/mi

2:07:11

↓ 46 ft0.8% grade

33 ft elev

20K· 12.43 mi

10:27/mi

2:11:39

↑ 16 ft0.7% grade

54 ft elev

13M

18:06/mi

2:22:01

↓ 26 ft0.8% grade

36 ft elev

Half· 13.11 mi

18:06/mi

2:24:00

→ flat0.5% grade

49 ft elev

14M

10:45/mi

2:33:34

↑ 23 ft↓ 39 ft0.3% grade

36 ft elev

15M

10:51/mi

2:44:25

↑ 62 ft1.1% grade

93 ft elev

25K· 15.53 mi

10:53/mi

2:50:14

↑ 68 ft2.4% grade

169 ft elev

16M

10:54/mi

2:55:19

↓ 45 ft1.7% grade

125 ft elev

17M

10:41/mi

3:06:00

↑ 10 ft↓ 59 ft0.9% grade

59 ft elev

18M

10:34/mi

3:16:34

↑ 30 ft↓ 49 ft0.4% grade

39 ft elev

30K· 18.64 mi

10:36/mi

3:23:22

→ flat

41 ft elev

19M

10:18/mi

3:27:04

→ flat0.2% grade

39 ft elev

20M

10:44/mi

3:37:48

↑ 43 ft0.7% grade

72 ft elev

21M

11:09/mi

3:48:57

↑ 20 ft↓ 39 ft0.4% grade

53 ft elev

35K· 21.75 mi

11:07/mi

3:57:16

↑ 20 ft↓ 23 ft

52 ft elev

22M

11:02/mi

4:00:03

→ flat0.2% grade

51 ft elev

23M

11:04/mi

4:11:07

↓ 10 ft0.1% grade

46 ft elev

24M

11:27/mi

4:22:34

↑ 92 ft1.7% grade

138 ft elev

40K· 24.85 mi

11:08/mi

4:32:05

↑ 13 ft↓ 62 ft1.1% grade

93 ft elev

25M

10:26/mi

4:33:36

↑ 10 ft1.3% grade

111 ft elev

26M

9:48/mi

4:43:24

↑ 39 ft↓ 39 ft

112 ft elev

Finish· 26.22 mi

9:32/mi

4:45:29

↓ 10 ft0.9% grade

102 ft elev

Course Elevation

926ft

Total climb

232ft

Range

30 to 262 ft

943ft

Total descent

About the height of two Statues of Liberty

The Course

Half Splits

1st Half· via Half

2:24:0010:59 /mi+1.7%

2nd Half

2:21:2910:48 /mi✓ faster

Negative split — 1.7% faster in the second half

AI Race Performance Report

Mason's race, broken down like a coach

The full Race Story, performance analysis, segment & passing breakdowns, and where the race turned. Free to unlock — for anyone.

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Checkpoint Splits

Checkpoint	Time	Avg Pace	Segment Length	Segment Time	Segment Pace	Diff
3M	31:06	10:22	3.00 mi	31:06	10:22	-
5K	32:16	10:23	0.11 mi	1:10	10:55	+0:33
4M	41:28	10:22	0.89 mi	9:12	10:18	-0:37
5M	51:46	10:21	1.00 mi	10:18	10:18	0:00
6M	1:02:10	10:22	1.00 mi	10:24	10:24	+0:06
10K	1:04:19	10:21	0.21 mi	2:09	10:04	-0:20
7M	1:12:18	10:20	0.79 mi	7:59	10:09	+0:05
8M	1:24:26	10:33	1.00 mi	12:08	12:08	+1:59
9M	1:35:19	10:35	1.00 mi	10:53	10:53	-1:15
15K	1:38:38	10:35	0.32 mi	3:19	10:21	-0:32
10M	1:45:57	10:36	0.68 mi	7:19	10:46	+0:25
11M	1:56:27	10:35	1.00 mi	10:30	10:30	-0:16
12M	2:07:11	10:36	1.00 mi	10:44	10:44	+0:14
20K	2:11:39	10:36	0.43 mi	4:28	10:27	-0:17
13M	2:22:01	10:55	0.57 mi	10:22	18:06	+7:39
Half(13.11 mi)	2:24:00	10:59	0.11 mi	1:59	18:06	0:00
14M	2:33:34	10:58	0.89 mi	9:34	10:45	-7:21
15M	2:44:25	10:58	1.00 mi	10:51	10:51	+0:06
25K	2:50:14	10:58	0.53 mi	5:49	10:53	+0:02
16M	2:55:19	10:57	0.47 mi	5:05	10:54	+0:01
17M	3:06:00	10:56	1.00 mi	10:41	10:41	-0:13
18M	3:16:34	10:55	1.00 mi	10:34	10:34	-0:07
30K	3:23:22	10:55	0.64 mi	6:48	10:36	+0:02
19M	3:27:04	10:54	0.36 mi	3:42	10:18	-0:18
20M	3:37:48	10:53	1.00 mi	10:44	10:44	+0:26
21M	3:48:57	10:54	1.00 mi	11:09	11:09	+0:25
35K	3:57:16	10:55	0.75 mi	8:19	11:07	-0:02
22M	4:00:03	10:55	0.25 mi	2:47	11:02	-0:05
23M	4:11:07	10:55	1.00 mi	11:04	11:04	+0:02
24M	4:22:34	10:56	1.00 mi	11:27	11:27	+0:23
40K	4:32:05	10:57	0.85 mi	9:31	11:08	-0:19
25M	4:33:36	10:57	0.15 mi	1:31	10:26	-0:42
26M	4:43:24	10:54	1.00 mi	9:48	9:48	-0:38
Finish(26.22 mi)	4:45:29	10:54	0.22 mi	2:05	9:32	-0:16

Trend:

Faster pace

Steady pace

Slower pace

Est.Checkpoint not recorded (estimated)

~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

9:32 /mi

Average Pace

10:54 /mi

Slowest Pace

18:06 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

11:53

4% of race

Time at Steady Pace

4:09:07

87% of race

Time at Slower Pace

24:29

9% of race

Average Pace: 10:53 /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	Males	M40-44	Seg. Overall	Seg. Males	Seg. M40-44
3M	3.00 mi	39891	24404	3129	59579	31496	3899
5K	0.11 mi	39957-66	24377+27	3121+8	45492	26199	3286
4M	0.89 mi	40207-250	24482-105	3132-11	40988	24816	3160
5M	1.00 mi	40422-215	24568-86	3134-2	41558	24951	3167
6M	1.00 mi	40558-136	24639-71	3141-7	41244	24844	3142
10K	0.21 mi	40393+165	24551+88	3131+10	36979	23013	2928
7M	0.79 mi	40498-105	24613-62	3135-4	41422	25025	3165
8M	1.00 mi	42497-1999	25454-841	3237-102	51682	28993	3628
9M	1.00 mi	42600-103	25506-52	3247-10	43639	25956	3291
15K	0.32 mi	42453+147	25444+62	3240+7	40244	24340	3084
10M	0.68 mi	42301+152	25354+90	3233+7	41684	24894	3164
11M	1.00 mi	41880+421	25179+175	3202+31	38425	23535	3003
12M	1.00 mi	41697+183	25103+76	3193+9	40169	24287	3105
20K	0.43 mi	41563+134	25056+47	3188+5	37821	23156	2961
13M	0.57 mi	44167-2604	26040-984	3306-118	59579	31496	3899
Half(13.11 mi)	0.11 mi	44609-442	26210-170	3322-16	59572	31488	3901
14M	0.89 mi	44117+492	25987+223	3296+26	38287	23035	2953
15M	1.00 mi	43359+758	25667+320	3262+34	33815	20886	2678
25K	0.53 mi	42851+508	25442+225	3228+34	31828	19800	2563
16M	0.47 mi	42765+86	25381+61	3218+10	41172	23993	3060
17M	1.00 mi	42219+546	25116+265	3187+31	34909	21206	2746
18M	1.00 mi	41563+656	24783+333	3155+32	32740	19960	2601
30K	0.64 mi	41000+563	24453+330	3122+33	30284	18447	2396
19M	0.36 mi	40759+241	24322+131	3105+17	30375	18433	2432
20M	1.00 mi	39928+831	23865+457	3056+49	27572	16881	2212
21M	1.00 mi	39364+564	23531+334	3023+33	30490	18047	2364
35K	0.75 mi	38975+389	23310+221	2994+29	31111	18223	2385
22M	0.25 mi	38840+135	23225+85	2982+12	30561	17959	2364
23M	1.00 mi	38416+424	22951+274	2948+34	30484	17629	2307
24M	1.00 mi	38052+364	22715+236	2910+38	30571	17573	2260
40K	0.85 mi	37762+290	22519+196	2893+17	32118	18170	2313
25M	0.15 mi	37710+52	22491+28	2886+7	28717	16909	2193
26M	1.00 mi	37119+591	22178+313	2847+39	22173	13398	1720
Finish(26.22 mi)	0.22 mi	37029+90	22131+47	2842+5	27221	15886	2008

Segment Performance Analysis

20K→13M

0.0 - 3.0 mi

Top 98%

118 ft79 ft

↑ 182ft↓ 221ft

194 ft

Overall

59579

Males

31496

No position changes recorded for this athlete.

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