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BOSTON MARATHON 2025

Stephen Choi

Bib: 23220•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:53
Rank: #16654
Start → 5K
8:01/mi
24:53 split
10K· 6.21 mi
49:32
Rank: #16268 (+386)
5K → 10K
7:56/mi
24:39 split
15K· 9.32 mi
1:15:37
Rank: #17170 (-902)
10K → 15K
8:24/mi
26:05 split
20K· 12.43 mi
1:41:09
Rank: #16961 (+209)
15K → 20K
8:13/mi
25:32 split
Half· 13.11 mi
1:46:43
Rank: #16958 (+3)
20K → Half
8:10/mi
5:34 split
25K· 15.53 mi
2:06:56
Rank: #16780 (+178)
Half → 25K
8:20/mi
20:13 split
30K· 18.64 mi
2:34:09
Rank: #16654 (+126)
25K → 30K
8:46/mi
27:13 split
20M
2:46:02
Rank: #16519 (+135)
30K → 20M
8:45/mi
11:53 split
21M
2:55:08
Rank: #16322 (+197)
20M → 21M
9:06/mi
9:06 split
35K· 21.75 mi
3:01:33
Rank: #16276 (+46)
21M → 35K
8:35/mi
6:25 split
23M
3:12:28
Rank: #16126 (+150)
35K → 23M
8:43/mi
10:55 split
24M
3:21:02
Rank: #16067 (+59)
23M → 24M
8:34/mi
8:34 split
40K· 24.85 mi
3:28:46
Rank: #16078 (-11)
24M → 40K
9:03/mi
7:44 split
25.2M
3:32:18
Rank: #16100 (-22)
40K → 25.2M
10:15/mi
3:32 split
Finish· 26.22 mi
3:41:13
Rank: #16173 (-73)
25.2M → Finish
8:45/mi
8:55 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:46:43
Pace8:08 /mi
2nd Half
Distance13.11 mi
Time1:54:30
Pace8:44 /mi
📊Positive Split: 7.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:1724:538:0124:53
8:01
-
10K
6.21 mi11:45:5649:327:5824:39
7:56
-0:05
15K
9.32 mi12:12:011:15:378:0726:05
8:24
+0:28
20K
12.43 mi12:37:331:41:098:0825:32
8:13
-0:11
Half
13.11 mi12:43:071:46:438:085:34
8:10
-0:03
25K
15.53 mi13:03:202:06:568:1020:13
8:20
+0:10
30K
18.64 mi13:30:332:34:098:1627:13
8:46
+0:26
20M
20.00 mi13:42:262:46:028:1811:53
8:45
-0:01
21M
21.00 mi13:51:322:55:088:209:06
9:06
+0:21
35K
21.75 mi13:57:573:01:338:216:25
8:35
-0:31
23M
23.00 mi14:08:523:12:288:2210:55
8:43
+0:08
24M
24.00 mi14:17:263:21:028:238:34
8:34
-0:09
40K
24.85 mi14:25:103:28:468:247:44
9:03
+0:29
25.2M
25.20 mi14:28:423:32:188:253:32
10:15
+1:12
Finish
26.22 mi14:37:373:41:138:278:55
8:45
-1:30

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:56 /mi

Average Pace

8:27 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:38

36% of race

Time at Steady Pace

2:00:13

54% of race

Time at Slower Pace

20:22

9% of race

Average Pace: 8:26 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

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

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:21:1724:538:0124:53
8:01
#16654
10K
6.21 mi11:45:5649:327:5824:39
7:56
#16268
15K
9.32 mi12:12:011:15:378:0726:05
8:24
#17170
20K
12.43 mi12:37:331:41:098:0825:32
8:13
#16961
Half
13.11 mi12:43:071:46:438:085:34
8:10
#16958
25K
15.53 mi13:03:202:06:568:1020:13
8:20
#16780
30K
18.64 mi13:30:332:34:098:1627:13
8:46
#16654
20M
20.00 mi13:42:262:46:028:1811:53
8:45
#16519
21M
21.00 mi13:51:322:55:088:209:06
9:06
#16322
35K
21.75 mi13:57:573:01:338:216:25
8:35
#16276
23M
23.00 mi14:08:523:12:288:2210:55
8:43
#16126
24M
24.00 mi14:17:263:21:028:238:34
8:34
#16067
40K
24.85 mi14:25:103:28:468:247:44
9:03
#16078
25.2M
25.20 mi14:28:423:32:188:253:32
10:15
#16100
Finish
26.22 mi14:37:373:41:138:278:55
8:45
#16173
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi16654110571105718657(Top 66%)11902(Top 74%)11902(Top 945%)
10K6.21 mi3.10 mi16268+38610914+14310914+14315936(Top 56%)10806(Top 67%)10806(Top 858%)
15K9.32 mi3.11 mi17170-90211307-39311307-39318657(Top 66%)11902(Top 74%)11902(Top 945%)
20K12.43 mi3.11 mi16961+20911193+11411193+11416411(Top 58%)10921(Top 68%)10921(Top 867%)
Half13.11 mi0.68 mi16958+311190+311190+316968(Top 60%)11159(Top 69%)11159(Top 886%)
25K15.53 mi2.42 mi16780+17811095+9511095+9516156(Top 57%)10709(Top 66%)10709(Top 851%)
30K18.64 mi3.11 mi16654+12610992+10310992+10316354(Top 58%)10644(Top 66%)10644(Top 845%)
20M20.00 mi1.36 mi16519+13510905+8710905+8715329(Top 54%)10065(Top 62%)10065(Top 799%)
21M21.00 mi1.00 mi16322+19710794+11110794+11114091(Top 50%)9380(Top 58%)9380(Top 745%)
35K21.75 mi0.75 mi16276+4610754+4010754+4015908(Top 56%)10135(Top 63%)10135(Top 805%)
23M23.00 mi1.25 mi16126+15010656+9810656+9814651(Top 52%)9468(Top 59%)9468(Top 752%)
24M24.00 mi1.00 mi16067+5910607+4910607+4914924(Top 53%)9551(Top 59%)9551(Top 759%)
40K24.85 mi0.85 mi16078-1110584+2310584+2316551(Top 58%)10172(Top 63%)10172(Top 808%)
25.2M25.20 mi0.35 mi16100-2210591-710591-718018(Top 63%)10818(Top 67%)10818(Top 859%)
Finish26.22 mi1.02 mi16173-7310603-1210603-1217752(Top 62%)10747(Top 67%)10747(Top 854%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18657

Males

11902

M60-64

11902

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

15936

Males

10806

M60-64

10806

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18657

Males

11902

M60-64

11902

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

16411

Males

10921

M60-64

10921

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

16968

Males

11159

M60-64

11159

Half→25K

13.1 - 15.5 mi

Top 57%
×4stories
+66ft-88ft

Overall

16156

Males

10709

M60-64

10709

25K→30K

15.5 - 18.6 mi

Top 58%
×9stories
+181ft-148ft

Overall

16354

Males

10644

M60-64

10644

30K→20M

18.6 - 20.0 mi

Top 54%
×5stories
+64ft-50ft

Overall

15329

Males

10065

M60-64

10065

20M→21M

20.0 - 21.0 mi

Top 50%
×8stories
+106ft-24ft

Overall

14091

Males

9380

M60-64

9380

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

15908

Males

10135

M60-64

10135

35K→23M

21.8 - 23.0 mi

Top 52%
×5stories
+23ft-63ft

Overall

14651

Males

9468

M60-64

9468

23M→24M

23.0 - 24.0 mi

Top 53%
×6stories
+12ft-82ft

Overall

14924

Males

9551

M60-64

9551

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16551

Males

10172

M60-64

10172

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

18018

Males

10818

M60-64

10818

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2stories
+22ft-21ft

Overall

17752

Males

10747

M60-64

10747

Passing Analysis

Category:
Athletes Passed
2300
Passed By
1819
Net Change
+481
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16654
5K → 10K513127+386#16654#16268
10K → 15K48950-902#16268#17170
15K → 20K29485+209#17170#16961
20K → Half3734+3#16961#16958
Half → 25K24062+178#16958#16780
25K → 30K273147+126#16780#16654
30K → 20M17540+135#16654#16519
20M → 21M22023+197#16519#16322
21M → 35K8135+46#16322#16276
35K → 23M18131+150#16276#16126
23M → 24M9738+59#16126#16067
24M → 40K6374-11#16067#16078
40K → 25.2M2749-22#16078#16100
25.2M → Finish51124-73#16100#16173
TOTALS23001819+481
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing