Simin Lee

Boston, MA

Bib: 30067 F 38

0:00

0:00

/ mi

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Overall

#0 / 61036

Top 14%

Gender (Female)

#0 / 28901

Top 6%

Division (W35-39)

#0 / 3366

Top 7%

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

8:12/mi

24:35

↑ 182 ft↓ 221 ft0.2% grade

79 ft elev

5K· 3.11 mi

8:25/mi

25:29

→ flat

76 ft elev

8:21/mi

32:56

↑ 23 ft↓ 16 ft0.1% grade

84 ft elev

8:10/mi

41:06

↑ 13 ft↓ 30 ft0.3% grade

70 ft elev

8:16/mi

49:22

↑ 16 ft↓ 36 ft0.4% grade

47 ft elev

10K· 6.21 mi

8:21/mi

51:09

→ flat0.6% grade

58 ft elev

8:11/mi

57:35

↓ 30 ft0.6% grade

33 ft elev

8:13/mi

1:05:48

↑ 30 ft0.4% grade

54 ft elev

8:16/mi

1:14:04

↑ 61 ft↓ 33 ft0.5% grade

81 ft elev

15K· 9.32 mi

8:10/mi

1:16:41

↓ 13 ft0.8% grade

66 ft elev

10M

8:12/mi

1:22:15

↓ 36 ft0.9% grade

33 ft elev

11M

8:14/mi

1:30:29

↑ 43 ft0.7% grade

72 ft elev

12M

8:14/mi

1:38:43

↓ 46 ft0.8% grade

33 ft elev

20K· 12.43 mi

8:00/mi

1:42:08

↑ 16 ft0.7% grade

54 ft elev

13M

8:18/mi

1:46:53

↓ 26 ft0.8% grade

36 ft elev

Half· 13.11 mi

8:18/mi

1:47:48

→ flat0.5% grade

49 ft elev

14M

8:11/mi

1:55:05

↑ 23 ft↓ 39 ft0.3% grade

36 ft elev

15M

8:24/mi

2:03:29

↑ 62 ft1.1% grade

93 ft elev

25K· 15.53 mi

8:18/mi

2:07:55

↑ 68 ft2.4% grade

169 ft elev

16M

7:48/mi

2:11:33

↓ 45 ft1.7% grade

125 ft elev

17M

8:10/mi

2:19:43

↑ 10 ft↓ 59 ft0.9% grade

59 ft elev

18M

7:59/mi

2:27:42

↑ 30 ft↓ 49 ft0.4% grade

39 ft elev

30K· 18.64 mi

8:03/mi

2:32:52

→ flat

41 ft elev

19M

8:02/mi

2:35:45

→ flat0.2% grade

39 ft elev

20M

8:03/mi

2:43:48

↑ 43 ft0.7% grade

72 ft elev

21M

8:08/mi

2:51:56

↑ 20 ft↓ 39 ft0.4% grade

53 ft elev

35K· 21.75 mi

8:03/mi

2:57:57

↑ 20 ft↓ 23 ft

52 ft elev

22M

8:04/mi

2:59:59

→ flat0.2% grade

51 ft elev

23M

7:55/mi

3:07:54

↓ 10 ft0.1% grade

46 ft elev

24M

7:59/mi

3:15:53

↑ 92 ft1.7% grade

138 ft elev

40K· 24.85 mi

8:04/mi

3:22:47

↑ 13 ft↓ 62 ft1.1% grade

93 ft elev

25M

7:55/mi

3:23:56

↑ 10 ft1.3% grade

111 ft elev

26M

7:49/mi

3:31:45

↑ 39 ft↓ 39 ft

112 ft elev

Finish· 26.22 mi

7:19/mi

3:33:21

↓ 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

1:47:488:13 /mi+2.1%

2nd Half

1:45:338:03 /mi✓ faster

Negative split — 2.1% faster in the second half

AI Race Performance Report

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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	24:35	8:12	3.00 mi	24:35	8:12	-
5K	25:29	8:12	0.11 mi	0:54	8:25	+0:13
4M	32:56	8:14	0.89 mi	7:27	8:21	-0:04
5M	41:06	8:13	1.00 mi	8:10	8:10	-0:11
6M	49:22	8:14	1.00 mi	8:16	8:16	+0:06
10K	51:09	8:14	0.21 mi	1:47	8:21	+0:05
7M	57:35	8:14	0.79 mi	6:26	8:11	-0:10
8M	1:05:48	8:13	1.00 mi	8:13	8:13	+0:02
9M	1:14:04	8:14	1.00 mi	8:16	8:16	+0:03
15K	1:16:41	8:14	0.32 mi	2:37	8:10	-0:06
10M	1:22:15	8:14	0.68 mi	5:34	8:12	+0:02
11M	1:30:29	8:14	1.00 mi	8:14	8:14	+0:02
12M	1:38:43	8:14	1.00 mi	8:14	8:14	0:00
20K	1:42:08	8:13	0.43 mi	3:25	8:00	-0:14
13M	1:46:53	8:13	0.57 mi	4:45	8:18	+0:18
Half(13.11 mi)	1:47:48	8:13	0.11 mi	0:55	8:18	0:00
14M	1:55:05	8:13	0.89 mi	7:17	8:11	-0:07
15M	2:03:29	8:14	1.00 mi	8:24	8:24	+0:13
25K	2:07:55	8:14	0.53 mi	4:26	8:18	-0:06
16M	2:11:33	8:13	0.47 mi	3:38	7:48	-0:30
17M	2:19:43	8:13	1.00 mi	8:10	8:10	+0:22
18M	2:27:42	8:12	1.00 mi	7:59	7:59	-0:11
30K	2:32:52	8:12	0.64 mi	5:10	8:03	+0:04
19M	2:35:45	8:12	0.36 mi	2:53	8:02	-0:01
20M	2:43:48	8:11	1.00 mi	8:03	8:03	+0:01
21M	2:51:56	8:11	1.00 mi	8:08	8:08	+0:05
35K	2:57:57	8:11	0.75 mi	6:01	8:03	-0:05
22M	2:59:59	8:11	0.25 mi	2:02	8:04	+0:01
23M	3:07:54	8:10	1.00 mi	7:55	7:55	-0:09
24M	3:15:53	8:10	1.00 mi	7:59	7:59	+0:04
40K	3:22:47	8:10	0.85 mi	6:54	8:04	+0:05
25M	3:23:56	8:09	0.15 mi	1:09	7:55	-0:09
26M	3:31:45	8:09	1.00 mi	7:49	7:49	-0:06
Finish(26.22 mi)	3:33:21	8:09	0.22 mi	1:36	7:19	-0:30

Trend:

Faster pace

Steady pace

Slower pace

Est.Checkpoint not recorded (estimated)

~Segment time uses estimated prior

Checkpoints & Pacing

Pace Line

Fastest Pace

7:19 /mi

Average Pace

8:09 /mi

Slowest Pace

8:25 /mi

Loading chart...

Fastest

Middle

Slowest

Average

Segments

Time at Faster Pace

44:23

21% of race

Time at Steady Pace

2:48:58

79% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:08 /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	W35-39	Seg. Overall	Seg. Females	Seg. W35-39
3M	3.00 mi	11942	2706	333	9327	1925	249
5K	0.11 mi	12026-84	2732-26	336-3	15128	3930	469
4M	0.89 mi	12560-534	2891-159	350-14	14887	3700	444
5M	1.00 mi	12738-178	2959-68	355-5	13738	3306	405
6M	1.00 mi	12940-202	3021-62	366-11	14077	3397	402
10K	0.21 mi	12961-21	3032-11	367-1	13459	3154	382
7M	0.79 mi	13119-158	3081-49	373-6	14588	3502	411
8M	1.00 mi	13011+108	3031+50	362+11	12397	2781	340
9M	1.00 mi	12907+104	2986+45	360+2	12237	2699	335
15K	0.32 mi	12903+4	2978+8	359+1	13078	3042	370
10M	0.68 mi	12850+53	2954+24	356+3	12762	2960	370
11M	1.00 mi	12660+190	2888+66	350+6	11099	2373	301
12M	1.00 mi	12588+72	2866+22	348+2	12114	2736	338
20K	0.43 mi	12430+158	2813+53	346+2	8791	1708	228
13M	0.57 mi	12195+235	2753+60	341+5	9327	1925	249
Half(13.11 mi)	0.11 mi	12272-77	2771-18	343-2	10695	2591	318
14M	0.89 mi	12131+141	2737+34	339+4	10793	2379	299
15M	1.00 mi	11870+261	2668+69	333+6	9482	2015	261
25K	0.53 mi	11635+235	2599+69	331+2	6812	1284	166
16M	0.47 mi	11524+111	2557+42	325+6	8073	1652	213
17M	1.00 mi	11341+183	2511+46	320+5	9655	2129	276
18M	1.00 mi	11066+275	2434+77	313+7	8012	1666	221
30K	0.64 mi	10870+196	2385+49	309+4	7724	1658	218
19M	0.36 mi	10777+93	2363+22	304+5	8027	1749	235
20M	1.00 mi	10381+396	2266+97	292+12	5874	1198	156
21M	1.00 mi	10000+381	2184+82	284+8	6067	1279	165
35K	0.75 mi	9741+259	2124+60	277+7	5912	1259	165
22M	0.25 mi	9633+108	2105+19	275+2	4667	935	118
23M	1.00 mi	9281+352	2017+88	267+8	4770	990	135
24M	1.00 mi	8839+442	1923+94	260+7	3634	691	84
40K	0.85 mi	8642+197	1880+43	256+4	5349	1320	169
25M	0.15 mi	8593+49	1869+11	252+4	4569	1030	133
26M	1.00 mi	8320+273	1806+63	245+7	4747	1134	141
Finish(26.22 mi)	0.22 mi	8259+61	1787+19	239+6	4192	919	125

Segment Performance Analysis

20K→13M

0.0 - 3.0 mi

Top 15%

118 ft79 ft

↑ 182ft↓ 221ft

194 ft

Overall

9327

Females

1925

23.0 - 24.0 mi

Top 6%

46 ft138 ft

↑ 92ft↓ 0ft

92 ft

Overall

3634

Females

691

W35-39

24M→40K

24.0 - 24.9 mi

Top 9%

138 ft89 ft

↑ 13ft↓ 62ft

49 ft

Overall

5349

Females

1320

W35-39

169

40K→25M

24.9 - 25.0 mi

Top 7%

98 ft108 ft

↑ 10ft↓ 0ft

10 ft

Overall

4569

Females

1030

W35-39

133

25M→26M

25.0 - 26.0 mi

Top 8%

112 ft112 ft

↑ 39ft↓ 39ft

33 ft

Overall

4747

Females

1134

W35-39

141

26M→Finish

26.0 - 26.2 mi

Top 7%

112 ft102 ft

↑ 0ft↓ 10ft

10 ft

Overall

4192

Females

919

W35-39

125

Passing Analysis

No position changes recorded for this athlete.

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