Ethan Lasser

Newton, MA

Bib: 51106 M 49

Masters

0:00

0:00

/ mi

Masters

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Overall

#0 / 61036

Top 45%

Gender (Male)

#0 / 31978

Masters (Masters Men)

#0 / 14572

Top 48%

Division (M45-49)

#0 / 3266

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

10:05/mi

30:14

↑ 182 ft↓ 221 ft0.2% grade

79 ft elev

5K· 3.11 mi

9:59/mi

31:18

→ flat

76 ft elev

9:58/mi

40:12

↑ 23 ft↓ 16 ft0.1% grade

84 ft elev

9:55/mi

50:07

↑ 13 ft↓ 30 ft0.3% grade

70 ft elev

9:59/mi

1:00:06

↑ 16 ft↓ 36 ft0.4% grade

47 ft elev

10K· 6.21 mi

10:13/mi

1:02:17

→ flat0.6% grade

58 ft elev

9:54/mi

1:10:04

↓ 30 ft0.6% grade

33 ft elev

10:00/mi

1:20:04

↑ 30 ft0.4% grade

54 ft elev

10:07/mi

1:30:11

↑ 61 ft↓ 33 ft0.5% grade

81 ft elev

15K· 9.32 mi

9:43/mi

1:33:18

↓ 13 ft0.8% grade

66 ft elev

10M

10:01/mi

1:40:06

↓ 36 ft0.9% grade

33 ft elev

11M

10:03/mi

1:50:09

↑ 43 ft0.7% grade

72 ft elev

12M

9:58/mi

2:00:07

↓ 46 ft0.8% grade

33 ft elev

20K· 12.43 mi

9:56/mi

2:04:22

↑ 16 ft0.7% grade

54 ft elev

13M

10:07/mi

2:10:09

↓ 26 ft0.8% grade

36 ft elev

Half· 13.11 mi

10:07/mi

2:11:16

→ flat0.5% grade

49 ft elev

14M

9:41/mi

2:19:53

↑ 23 ft↓ 39 ft0.3% grade

36 ft elev

15M

10:02/mi

2:29:55

↑ 62 ft1.1% grade

93 ft elev

25K· 15.53 mi

9:59/mi

2:35:15

↑ 68 ft2.4% grade

169 ft elev

16M

9:39/mi

2:39:45

↓ 45 ft1.7% grade

125 ft elev

17M

10:00/mi

2:49:45

↑ 10 ft↓ 59 ft0.9% grade

59 ft elev

18M

9:44/mi

2:59:29

↑ 30 ft↓ 49 ft0.4% grade

39 ft elev

30K· 18.64 mi

9:51/mi

3:05:48

→ flat

41 ft elev

19M

9:45/mi

3:09:18

→ flat0.2% grade

39 ft elev

20M

9:57/mi

3:19:15

↑ 43 ft0.7% grade

72 ft elev

21M

10:07/mi

3:29:22

↑ 20 ft↓ 39 ft0.4% grade

53 ft elev

35K· 21.75 mi

10:00/mi

3:36:51

↑ 20 ft↓ 23 ft

52 ft elev

22M

10:26/mi

3:39:29

→ flat0.2% grade

51 ft elev

23M

10:01/mi

3:49:30

↓ 10 ft0.1% grade

46 ft elev

24M

10:21/mi

3:59:51

↑ 92 ft1.7% grade

138 ft elev

40K· 24.85 mi

10:14/mi

4:08:36

↑ 13 ft↓ 62 ft1.1% grade

93 ft elev

25M

9:51/mi

4:10:02

↑ 10 ft1.3% grade

111 ft elev

26M

9:56/mi

4:19:58

↑ 39 ft↓ 39 ft

112 ft elev

Finish· 26.22 mi

9:22/mi

4:22:01

↓ 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

2:11:1610:01 /mi⚖️ balanced

2nd Half

2:10:459:58 /mi⚖️ balanced

Even split — consistent pacing between halves

AI Race Performance Report

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

Trend:

Faster pace

Steady pace

Slower pace

Est.Checkpoint not recorded (estimated)

~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

9:22 /mi

Average Pace

10:00 /mi

Slowest Pace

10:26 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

4:09:02

95% of race

Time at Steady Pace

12:59

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:00 /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	M45-49	Seg. Overall	Seg. Males	Seg. M45-49
3M	3.00 mi	36423	22848	2329	29528	19145	1908
5K	0.11 mi	36226+197	22728+120	2313+16	36103	22347	2268
4M	0.89 mi	36409-183	22824-96	2321-8	37139	23176	2340
5M	1.00 mi	36571-162	22896-72	2327-6	37194	23170	2346
6M	1.00 mi	36535+36	22868+28	2316+11	36760	22901	2309
10K	0.21 mi	36580-45	22890-22	2318-2	38401	23678	2406
7M	0.79 mi	36765-185	22993-103	2326-8	38411	23762	2408
8M	1.00 mi	36438+327	22853+140	2310+16	34725	22103	2204
9M	1.00 mi	36325+113	22811+42	2305+5	35804	22632	2272
15K	0.32 mi	36177+148	22742+69	2300+5	33075	21154	2117
10M	0.68 mi	35980+197	22635+107	2288+12	34338	21629	2155
11M	1.00 mi	35626+354	22449+186	2266+22	33376	21281	2112
12M	1.00 mi	35296+330	22298+151	2235+31	32506	20861	2101
20K	0.43 mi	35147+149	22214+84	2227+8	32130	20612	2047
13M	0.57 mi	34770+377	22018+196	2204+23	29528	19145	1908
Half(13.11 mi)	0.11 mi	34715+55	21985+33	2199+5	30689	19706	1950
14M	0.89 mi	34146+569	21688+297	2164+35	27850	18230	1831
15M	1.00 mi	33425+721	21321+367	2130+34	26462	17446	1744
25K	0.53 mi	32926+499	21038+283	2105+25	23628	15843	1605
16M	0.47 mi	32764+162	20945+93	2096+9	28398	18376	1874
17M	1.00 mi	32401+363	20740+205	2080+16	28375	18201	1832
18M	1.00 mi	31829+572	20413+327	2051+29	25281	16439	1669
30K	0.64 mi	31398+431	20154+259	2030+21	24016	15515	1582
19M	0.36 mi	31225+173	20051+103	2020+10	25112	15998	1627
20M	1.00 mi	30392+833	19555+496	1972+48	21517	14006	1433
21M	1.00 mi	29790+602	19169+386	1936+36	22137	14148	1461
35K	0.75 mi	29356+434	18887+282	1904+32	21764	13863	1399
22M	0.25 mi	29260+96	18823+64	1896+8	24815	15355	1568
23M	1.00 mi	28775+485	18504+319	1874+22	21284	13388	1360
24M	1.00 mi	28209+566	18109+395	1834+40	20793	12938	1306
40K	0.85 mi	27944+265	17900+209	1818+16	23598	14132	1418
25M	0.15 mi	27894+50	17861+39	1809+9	22475	13850	1368
26M	1.00 mi	27647+247	17669+192	1793+16	23484	14055	1409
Finish(26.22 mi)	0.22 mi	27596+51	17630+39	1787+6	25056	14853	1418

Segment Performance Analysis

20K→13M

0.0 - 3.0 mi

Top 48%

118 ft79 ft

↑ 182ft↓ 221ft

194 ft

Overall

29528

Males

19145

No position changes recorded for this athlete.

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Race managed by

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