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BOSTON MARATHON 2023

Gareth Birch

Bib: 14125•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 31%
Gender (Male)
#0 / 15176
Top 45%
Masters (Masters Men)
#0 / 9891
Top 33%
Division (M50-54)
#0 / 2052
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:09/mi
22:12
↑ 97↓ 3451.5%
10K· 6.21 mi
7:20/mi
44:58
↑ 79↓ 1380.4%
15K· 9.32 mi
7:21/mi
1:07:47
↑ 67↓ 78
20K· 12.43 mi
7:37/mi
1:31:26
↑ 106↓ 860.1%
Half· 13.11 mi
7:17/mi
1:36:24
↑ 19↓ 370.5%
25K· 15.53 mi
7:29/mi
1:54:33
↑ 66↓ 880.2%
30K· 18.64 mi
7:38/mi
2:18:16
↑ 181↓ 1480.2%
20M
7:42/mi
2:28:44
↑ 64↓ 500.2%
21M
8:03/mi
2:36:47
↑ 106↓ 241.6%
35K· 21.75 mi
7:25/mi
2:42:20
↑ 17↓ 861.7%
23M
7:50/mi
2:52:08
↑ 23↓ 630.6%
24M
7:35/mi
2:59:43
↓ 821.3%
40K· 24.85 mi
7:48/mi
3:06:23
↓ 200.3%
25.2M
8:16/mi
3:09:14
↑ 13↓ 160.2%
Finish· 26.22 mi
7:33/mi
3:16:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:24
Pace7:21 /mi
2nd Half
Distance13.11 mi
Time1:40:32
Pace7:40 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:2322:127:0922:12
7:09
-
10K
6.21 mi11:17:0944:587:1422:46
7:20
+0:11
15K
9.32 mi11:39:581:07:477:1622:49
7:21
+0:01
20K
12.43 mi12:03:371:31:267:2123:39
7:37
+0:16
Half
13.11 mi12:08:351:36:247:214:58
7:17
-0:20
25K
15.53 mi12:26:441:54:337:2218:09
7:29
+0:12
30K
18.64 mi12:50:272:18:167:2523:43
7:38
+0:09
20M
20.00 mi13:00:552:28:447:2610:28
7:42
+0:04
21M
21.00 mi13:08:582:36:477:288:03
8:03
+0:21
35K
21.75 mi13:14:312:42:207:285:33
7:25
-0:38
23M
23.00 mi13:24:192:52:087:299:48
7:50
+0:25
24M
24.00 mi13:31:542:59:437:297:35
7:35
-0:15
40K
24.85 mi13:38:343:06:237:306:40
7:48
+0:13
25.2M
25.20 mi13:41:253:09:147:312:51
8:16
+0:28
Finish
26.22 mi13:49:073:16:567:317:42
7:33
-0:43

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

7:09 /mi

Average Pace

7:31 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:02

94% of race

Time at Steady Pace

10:54

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:31 /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 mi10:54:2322:127:0922:12
7:09
#7156
10K
6.21 mi11:17:0944:587:1422:46
7:20
#8010
15K
9.32 mi11:39:581:07:477:1622:49
7:21
#8244
20K
12.43 mi12:03:371:31:267:2123:39
7:37
#8674
Half
13.11 mi12:08:351:36:247:214:58
7:17
#8659
25K
15.53 mi12:26:441:54:337:2218:09
7:29
#8629
30K
18.64 mi12:50:272:18:167:2523:43
7:38
#8499
20M
20.00 mi13:00:552:28:447:2610:28
7:42
#8455
21M
21.00 mi13:08:582:36:477:288:03
8:03
#8394
35K
21.75 mi13:14:312:42:207:285:33
7:25
#8369
23M
23.00 mi13:24:192:52:087:299:48
7:50
#8348
24M
24.00 mi13:31:542:59:437:297:35
7:35
#8317
40K
24.85 mi13:38:343:06:237:306:40
7:48
#8296
25.2M
25.20 mi13:41:253:09:147:312:51
8:16
#8287
Finish
26.22 mi13:49:073:16:567:317:42
7:33
#8272
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi7156639163918894(Top 33%)7471(Top 49%)7471(Top 364%)
10K6.21 mi3.10 mi8010-8546969-5786969-5789055(Top 34%)7612(Top 50%)7612(Top 371%)
15K9.32 mi3.11 mi8244-2347106-1377106-1378894(Top 33%)7471(Top 49%)7471(Top 364%)
20K12.43 mi3.11 mi8674-4307356-2507356-25010155(Top 38%)8153(Top 54%)8153(Top 397%)
Half13.11 mi0.68 mi8659+157351+57351+58411(Top 32%)7150(Top 47%)7150(Top 348%)
25K15.53 mi2.42 mi8629+307313+387313+388655(Top 33%)7233(Top 48%)7233(Top 352%)
30K18.64 mi3.11 mi8499+1307189+1247189+1248180(Top 31%)6795(Top 45%)6795(Top 331%)
20M20.00 mi1.36 mi8455+447144+457144+458188(Top 31%)6711(Top 44%)6711(Top 327%)
21M21.00 mi1.00 mi8394+617082+627082+627654(Top 29%)6280(Top 41%)6280(Top 306%)
35K21.75 mi0.75 mi8369+257061+217061+217908(Top 30%)6443(Top 42%)6443(Top 314%)
23M23.00 mi1.25 mi8348+217029+327029+328586(Top 32%)6744(Top 44%)6744(Top 329%)
24M24.00 mi1.00 mi8317+316985+446985+448261(Top 31%)6466(Top 43%)6466(Top 315%)
40K24.85 mi0.85 mi8296+216950+356950+358634(Top 32%)6618(Top 44%)6618(Top 323%)
25.2M25.20 mi0.35 mi8287+96937+136937+138018(Top 30%)6178(Top 41%)6178(Top 301%)
Finish26.22 mi1.02 mi8272+156901+366901+368933(Top 34%)6711(Top 44%)6711(Top 327%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21story building
+97ft-345ft

Overall

8894

Males

7471

M50-54

7471

5K→10K

3.1 - 6.2 mi

Top 34%
×5story building
+79ft-138ft

Overall

9055

Males

7612

M50-54

7612

10K→15K

6.2 - 9.3 mi

Top 33%
×3story building
+67ft-78ft

Overall

8894

Males

7471

M50-54

7471

15K→20K

9.3 - 12.4 mi

Top 38%
×5story building
+106ft-86ft

Overall

10155

Males

8153

M50-54

8153

20K→Half

12.4 - 13.1 mi

Top 32%
×2story building
+19ft-37ft

Overall

8411

Males

7150

M50-54

7150

Half→25K

13.1 - 15.5 mi

Top 33%
×4story building
+66ft-88ft

Overall

8655

Males

7233

M50-54

7233

25K→30K

15.5 - 18.6 mi

Top 31%
×9story building
+181ft-148ft

Overall

8180

Males

6795

M50-54

6795

30K→20M

18.6 - 20.0 mi

Top 31%
×5story building
+64ft-50ft

Overall

8188

Males

6711

M50-54

6711

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

7654

Males

6280

M50-54

6280

21M→35K

21.0 - 21.8 mi

Top 30%
×7story building
+17ft-86ft

Overall

7908

Males

6443

M50-54

6443

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

8586

Males

6744

M50-54

6744

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8261

Males

6466

M50-54

6466

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8634

Males

6618

M50-54

6618

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8018

Males

6178

M50-54

6178

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

8933

Males

6711

M50-54

6711

Passing Analysis

Category:
Athletes Passed
1110
Passed By
2226
Net Change
-1116
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7156
5K → 10K35889-854#7156#8010
10K → 15K71305-234#8010#8244
15K → 20K40470-430#8244#8674
20K → Half3419+15#8674#8659
Half → 25K10171+30#8659#8629
25K → 30K233103+130#8629#8499
30K → 20M10258+44#8499#8455
20M → 21M10039+61#8455#8394
21M → 35K5631+25#8394#8369
35K → 23M9372+21#8369#8348
23M → 24M7847+31#8348#8317
24M → 40K6443+21#8317#8296
40K → 25.2M2920+9#8296#8287
25.2M → Finish7459+15#8287#8272
TOTALS11102226-1116
📊

Passing Visuals

Category:
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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