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BOSTON MARATHON 2023

Christopher Gerlach

Bib: 10340•M

MN

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 37%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 41%
Division (M50-54)
#0 / 2052
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:44
Rank: #8212
Start → 5K
22:44 | 7:19/mi
10K· 6.21 mi
45:33
Rank: #8657 (-445)
5K → 10K
22:49 | 7:21/mi
15K· 9.32 mi
1:08:34
Rank: #8885 (-228)
10K → 15K
23:01 | 7:25/mi
20K· 12.43 mi
1:31:54
Rank: #8962 (-77)
15K → 20K
23:20 | 7:31/mi
Half· 13.11 mi
1:36:57
Rank: #8980 (-18)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:55:39
Rank: #9170 (-190)
Half → 25K
18:42 | 7:43/mi
30K· 18.64 mi
2:20:09
Rank: #9299 (-129)
25K → 30K
24:30 | 7:53/mi
20M
2:30:56
Rank: #9329 (-30)
30K → 20M
10:47 | 7:56/mi
21M
2:39:55
Rank: #9554 (-225)
20M → 21M
8:59 | 8:59/mi
35K· 21.75 mi
2:45:54
Rank: #9626 (-72)
21M → 35K
5:59 | 8:00/mi
23M
2:56:21
Rank: #9743 (-117)
35K → 23M
10:27 | 8:21/mi
24M
3:04:26
Rank: #9809 (-66)
23M → 24M
8:05 | 8:05/mi
40K· 24.85 mi
3:11:26
Rank: #9846 (-37)
24M → 40K
7:00 | 8:11/mi
25.2M
3:14:31
Rank: #9875 (-29)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:22:44
Rank: #9970 (-95)
25.2M → Finish
8:13 | 8:04/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:57
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:45:47
Pace8:04 /mi
📊Positive Split: 9.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5422:447:1922:44
7:19
-
10K
6.21 mi11:11:4345:337:2022:49
7:21
+0:02
15K
9.32 mi11:34:441:08:347:2123:01
7:25
+0:04
20K
12.43 mi11:58:041:31:547:2423:20
7:31
+0:06
Half
13.11 mi12:03:071:36:577:245:03
7:24
-0:07
25K
15.53 mi12:21:491:55:397:2718:42
7:43
+0:19
30K
18.64 mi12:46:192:20:097:3124:30
7:53
+0:10
20M
20.00 mi12:57:062:30:567:3310:47
7:56
+0:03
21M
21.00 mi13:06:052:39:557:378:59
8:59
+1:03
35K
21.75 mi13:12:042:45:547:385:59
8:00
-0:59
23M
23.00 mi13:22:312:56:217:4010:27
8:21
+0:21
24M
24.00 mi13:30:363:04:267:418:05
8:05
-0:16
40K
24.85 mi13:37:363:11:267:427:00
8:11
+0:06
25.2M
25.20 mi13:40:413:14:317:433:05
8:56
+0:45
Finish
26.22 mi13:48:543:22:447:448:13
8:04
-0:52

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

7:19 /mi

Average Pace

7:44 /mi

Slowest Pace

8:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:36:57

48% of race

Time at Steady Pace

1:23:16

41% of race

Time at Slower Pace

22:31

11% of race

Average Pace: 7:44 /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 mi10:48:5422:447:1922:44
7:19
#8212
10K
6.21 mi11:11:4345:337:2022:49
7:21
#8657
15K
9.32 mi11:34:441:08:347:2123:01
7:25
#8885
20K
12.43 mi11:58:041:31:547:2423:20
7:31
#8962
Half
13.11 mi12:03:071:36:577:245:03
7:24
#8980
25K
15.53 mi12:21:491:55:397:2718:42
7:43
#9170
30K
18.64 mi12:46:192:20:097:3124:30
7:53
#9299
20M
20.00 mi12:57:062:30:567:3310:47
7:56
#9329
21M
21.00 mi13:06:052:39:557:378:59
8:59
#9554
35K
21.75 mi13:12:042:45:547:385:59
8:00
#9626
23M
23.00 mi13:22:312:56:217:4010:27
8:21
#9743
24M
24.00 mi13:30:363:04:267:418:05
8:05
#9809
40K
24.85 mi13:37:363:11:267:427:00
8:11
#9846
25.2M
25.20 mi13:40:413:14:317:433:05
8:56
#9875
Finish
26.22 mi13:48:543:22:447:448:13
8:04
#9970
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8212711671169403(Top 35%)7807(Top 51%)7807(Top 380%)
10K6.21 mi3.10 mi8657-4457372-2567372-2569180(Top 34%)7685(Top 51%)7685(Top 375%)
15K9.32 mi3.11 mi8885-2287494-1227494-1229403(Top 35%)7807(Top 51%)7807(Top 380%)
20K12.43 mi3.11 mi8962-777526-327526-329383(Top 35%)7735(Top 51%)7735(Top 377%)
Half13.11 mi0.68 mi8980-187535-97535-99422(Top 35%)7772(Top 51%)7772(Top 379%)
25K15.53 mi2.42 mi9170-1907651-1167651-11610375(Top 39%)8190(Top 54%)8190(Top 399%)
30K18.64 mi3.11 mi9299-1297682-317682-3110018(Top 38%)7837(Top 52%)7837(Top 382%)
20M20.00 mi1.36 mi9329-307672+107672+109775(Top 37%)7624(Top 50%)7624(Top 372%)
21M21.00 mi1.00 mi9554-2257792-1207792-12013274(Top 50%)9155(Top 60%)9155(Top 446%)
35K21.75 mi0.75 mi9626-727821-297821-2912059(Top 45%)8568(Top 56%)8568(Top 418%)
23M23.00 mi1.25 mi9743-1177848-277848-2712190(Top 46%)8546(Top 56%)8546(Top 416%)
24M24.00 mi1.00 mi9809-667855-77855-711786(Top 44%)8286(Top 55%)8286(Top 404%)
40K24.85 mi0.85 mi9846-377844+117844+1111241(Top 42%)7946(Top 52%)7946(Top 387%)
25.2M25.20 mi0.35 mi9875-297846-27846-212096(Top 45%)8290(Top 55%)8290(Top 404%)
Finish26.22 mi1.02 mi9970-957877-317877-3112520(Top 47%)8527(Top 56%)8527(Top 416%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9403

Males

7807

M50-54

7807

5K→10K

3.1 - 6.2 mi

Top 34%
×5stories
+79ft-138ft

Overall

9180

Males

7685

M50-54

7685

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9403

Males

7807

M50-54

7807

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9383

Males

7735

M50-54

7735

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9422

Males

7772

M50-54

7772

Half→25K

13.1 - 15.5 mi

Top 39%
×4stories
+66ft-88ft

Overall

10375

Males

8190

M50-54

8190

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10018

Males

7837

M50-54

7837

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

9775

Males

7624

M50-54

7624

20M→21M

20.0 - 21.0 mi

Top 50%
×8stories
+106ft-24ft

Overall

13274

Males

9155

M50-54

9155

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

12059

Males

8568

M50-54

8568

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12190

Males

8546

M50-54

8546

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

11786

Males

8286

M50-54

8286

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11241

Males

7946

M50-54

7946

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12096

Males

8290

M50-54

8290

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

12520

Males

8527

M50-54

8527

Passing Analysis

Category:
Athletes Passed
830*
Passed By
2588
Net Change
-1758
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8212
5K → 10K95540-445#8212#8657
10K → 15K74302-228#8657#8885
15K → 20K100177-77#8885#8962
20K → Half2139-18#8962#8980
Half → 25K59249-190#8980#9170
25K → 30K126255-129#9170#9299
30K → 20M6595-30#9299#9329
20M → 21M39264-225#9329#9554
21M → 35K2395-72#9554#9626
35K → 23M63180-117#9626#9743
23M → 24M43109-66#9743#9809
24M → 40K5693-37#9809#9846
40K → 25.2M2150-29#9846#9875
25.2M → Finish45*140-95#9875#9970
TOTALS830*2588-1758

* 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