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BOSTON MARATHON 2023

Ian Stephens

Bib: 27156•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 33%
Gender (Male)
#0 / 15176
Top 48%
Masters (Masters Men)
#0 / 9891
Top 36%
Division (M45-49)
#0 / 2252
Top 49%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:57
Rank: #8717
Start → 5K
22:57 | 7:23/mi
10K· 6.21 mi
46:26
Rank: #9759 (-1042)
5K → 10K
23:29 | 7:34/mi
15K· 9.32 mi
1:10:09
Rank: #10286 (-527)
10K → 15K
23:43 | 7:38/mi
20K· 12.43 mi
1:33:26
Rank: #9993 (+293)
15K → 20K
23:17 | 7:30/mi
Half· 13.11 mi
1:38:32
Rank: #9981 (+12)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:56:51
Rank: #9827 (+154)
Half → 25K
18:19 | 7:33/mi
30K· 18.64 mi
2:20:37
Rank: #9521 (+306)
25K → 30K
23:46 | 7:39/mi
20M
2:31:14
Rank: #9456 (+65)
30K → 20M
10:37 | 7:49/mi
21M
2:39:04
Rank: #9217 (+239)
20M → 21M
7:50 | 7:50/mi
35K· 21.75 mi
2:44:31
Rank: #9115 (+102)
21M → 35K
5:27 | 7:17/mi
23M
2:53:57
Rank: #8948 (+167)
35K → 23M
9:26 | 7:32/mi
24M
3:01:34
Rank: #8898 (+50)
23M → 24M
7:37 | 7:37/mi
40K· 24.85 mi
3:08:23
Rank: #8920 (-22)
24M → 40K
6:49 | 7:58/mi
25.2M
3:11:13
Rank: #8879 (+41)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:18:46
Rank: #8818 (+61)
25.2M → Finish
7:33 | 7:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:32
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:40:14
Pace7:39 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:39:2522:577:2322:57
7:23
-
10K
6.21 mi12:02:5446:267:2823:29
7:34
+0:11
15K
9.32 mi12:26:371:10:097:3223:43
7:38
+0:04
20K
12.43 mi12:49:541:33:267:3123:17
7:30
-0:08
Half
13.11 mi12:55:001:38:327:315:06
7:29
-0:01
25K
15.53 mi13:13:191:56:517:3118:19
7:33
+0:04
30K
18.64 mi13:37:052:20:377:3323:46
7:39
+0:06
20M
20.00 mi13:47:422:31:147:3410:37
7:49
+0:10
21M
21.00 mi13:55:322:39:047:347:50
7:50
+0:01
35K
21.75 mi14:00:592:44:317:345:27
7:17
-0:33
23M
23.00 mi14:10:252:53:577:349:26
7:32
+0:15
24M
24.00 mi14:18:023:01:347:347:37
7:37
+0:05
40K
24.85 mi14:24:513:08:237:356:49
7:58
+0:21
25.2M
25.20 mi14:27:413:11:137:352:50
8:13
+0:15
Finish
26.22 mi14:35:143:18:467:357:33
7:25
-0:48

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

7:17 /mi

Average Pace

7:35 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:15:56

99% of race

Time at Steady Pace

2:50

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:35 /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 mi11:39:2522:577:2322:57
7:23
#8717
10K
6.21 mi12:02:5446:267:2823:29
7:34
#9759
15K
9.32 mi12:26:371:10:097:3223:43
7:38
#10286
20K
12.43 mi12:49:541:33:267:3123:17
7:30
#9993
Half
13.11 mi12:55:001:38:327:315:06
7:29
#9981
25K
15.53 mi13:13:191:56:517:3118:19
7:33
#9827
30K
18.64 mi13:37:052:20:377:3323:46
7:39
#9521
20M
20.00 mi13:47:422:31:147:3410:37
7:49
#9456
21M
21.00 mi13:55:322:39:047:347:50
7:50
#9217
35K
21.75 mi14:00:592:44:317:345:27
7:17
#9115
23M
23.00 mi14:10:252:53:577:349:26
7:32
#8948
24M
24.00 mi14:18:023:01:347:347:37
7:37
#8898
40K
24.85 mi14:24:513:08:237:356:49
7:58
#8920
25.2M
25.20 mi14:27:413:11:137:352:50
8:13
#8879
Finish
26.22 mi14:35:143:18:467:357:33
7:25
#8818
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi87177426742611278(Top 42%)8753(Top 58%)8753(Top 389%)
10K6.21 mi3.10 mi9759-10428018-5928018-59210931(Top 41%)8637(Top 57%)8637(Top 384%)
15K9.32 mi3.11 mi10286-5278320-3028320-30211278(Top 42%)8753(Top 58%)8753(Top 389%)
20K12.43 mi3.11 mi9993+2938147+1738147+1739252(Top 35%)7654(Top 50%)7654(Top 340%)
Half13.11 mi0.68 mi9981+128137+108137+109950(Top 37%)8060(Top 53%)8060(Top 358%)
25K15.53 mi2.42 mi9827+1548035+1028035+1029174(Top 34%)7536(Top 50%)7536(Top 335%)
30K18.64 mi3.11 mi9521+3067816+2197816+2198295(Top 31%)6863(Top 45%)6863(Top 305%)
20M20.00 mi1.36 mi9456+657754+627754+628941(Top 34%)7155(Top 47%)7155(Top 318%)
21M21.00 mi1.00 mi9217+2397584+1707584+1706352(Top 24%)5456(Top 36%)5456(Top 242%)
35K21.75 mi0.75 mi9115+1027508+767508+767044(Top 26%)5929(Top 39%)5929(Top 263%)
23M23.00 mi1.25 mi8948+1677391+1177391+1176632(Top 25%)5599(Top 37%)5599(Top 249%)
24M24.00 mi1.00 mi8898+507328+637328+638499(Top 32%)6611(Top 44%)6611(Top 294%)
40K24.85 mi0.85 mi8920-227325+37325+39834(Top 37%)7250(Top 48%)7250(Top 322%)
25.2M25.20 mi0.35 mi8879+417288+377288+377753(Top 29%)6029(Top 40%)6029(Top 268%)
Finish26.22 mi1.02 mi8818+617238+507238+507844(Top 29%)6079(Top 40%)6079(Top 270%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11278

Males

8753

M45-49

8753

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

10931

Males

8637

M45-49

8637

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11278

Males

8753

M45-49

8753

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9252

Males

7654

M45-49

7654

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9950

Males

8060

M45-49

8060

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9174

Males

7536

M45-49

7536

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8295

Males

6863

M45-49

6863

30K→20M

18.6 - 20.0 mi

Top 34%
×5stories
+64ft-50ft

Overall

8941

Males

7155

M45-49

7155

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6352

Males

5456

M45-49

5456

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

7044

Males

5929

M45-49

5929

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

6632

Males

5599

M45-49

5599

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

8499

Males

6611

M45-49

6611

24M→40K

24.0 - 24.9 mi

Top 37%
×1story
+6ft-20ft

Overall

9834

Males

7250

M45-49

7250

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

7753

Males

6029

M45-49

6029

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

7844

Males

6079

M45-49

6079

Passing Analysis

Category:
Athletes Passed
1917*
Passed By
2016
Net Change
-101
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8717
5K → 10K431085-1042#8717#9759
10K → 15K52577-527#9759#10286
15K → 20K339*46+293#10286#9993
20K → Half3422+12#9993#9981
Half → 25K18834+154#9981#9827
25K → 30K345*39+306#9827#9521
30K → 20M11550+65#9521#9456
20M → 21M2434+239#9456#9217
21M → 35K1053+102#9217#9115
35K → 23M1769+167#9115#8948
23M → 24M9545+50#8948#8898
24M → 40K4466-22#8898#8920
40K → 25.2M476+41#8920#8879
25.2M → Finish9130+61#8879#8818
TOTALS1917*2016-101

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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