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BOSTON MARATHON 2023

David Forsyth

Bib: 6339•M

UT

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 23%
Gender (Male)
#0 / 15176
Top 36%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:07
Rank: #6981
Start → 5K
22:07 | 7:07/mi
10K· 6.21 mi
44:07
Rank: #7099 (-118)
5K → 10K
22:00 | 7:05/mi
15K· 9.32 mi
1:06:20
Rank: #7214 (-115)
10K → 15K
22:13 | 7:09/mi
20K· 12.43 mi
1:28:45
Rank: #7169 (+45)
15K → 20K
22:25 | 7:13/mi
Half· 13.11 mi
1:33:31
Rank: #7138 (+31)
20K → Half
4:46 | 6:59/mi
25K· 15.53 mi
1:51:09
Rank: #7087 (+51)
Half → 25K
17:38 | 7:16/mi
30K· 18.64 mi
2:14:06
Rank: #6955 (+132)
25K → 30K
22:57 | 7:23/mi
20M
2:24:14
Rank: #6906 (+49)
30K → 20M
10:08 | 7:27/mi
21M
2:31:47
Rank: #6739 (+167)
20M → 21M
7:33 | 7:33/mi
35K· 21.75 mi
2:36:46
Rank: #6603 (+136)
21M → 35K
4:59 | 6:40/mi
23M
2:45:28
Rank: #6368 (+235)
35K → 23M
8:42 | 6:57/mi
24M
2:52:38
Rank: #6274 (+94)
23M → 24M
7:10 | 7:10/mi
40K· 24.85 mi
2:59:12
Rank: #6289 (-15)
24M → 40K
6:34 | 7:41/mi
25.2M
3:01:59
Rank: #6295 (-6)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
3:08:58
Rank: #6180 (+115)
25.2M → Finish
6:59 | 6:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:31
Pace7:08 /mi
2nd Half
Distance13.11 mi
Time1:35:27
Pace7:17 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:5522:077:0722:07
7:07
-
10K
6.21 mi10:47:5544:077:0622:00
7:05
-0:02
15K
9.32 mi11:10:081:06:207:0722:13
7:09
+0:04
20K
12.43 mi11:32:331:28:457:0822:25
7:13
+0:04
Half
13.11 mi11:37:191:33:317:084:46
6:59
-0:14
25K
15.53 mi11:54:571:51:097:0917:38
7:16
+0:17
30K
18.64 mi12:17:542:14:067:1222:57
7:23
+0:07
20M
20.00 mi12:28:022:24:147:1310:08
7:27
+0:04
21M
21.00 mi12:35:352:31:477:147:33
7:33
+0:06
35K
21.75 mi12:40:342:36:467:124:59
6:40
-0:53
23M
23.00 mi12:49:162:45:287:128:42
6:57
+0:17
24M
24.00 mi12:56:262:52:387:127:10
7:10
+0:13
40K
24.85 mi13:03:002:59:127:136:34
7:41
+0:31
25.2M
25.20 mi13:05:473:01:597:132:47
8:04
+0:23
Finish
26.22 mi13:12:463:08:587:136:59
6:51
-1:13

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

6:40 /mi

Average Pace

7:13 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

25:26

13% of race

Time at Steady Pace

1:53:33

60% of race

Time at Slower Pace

49:59

26% of race

Average Pace: 7:12 /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 mi10:25:5522:077:0722:07
7:07
#6981
10K
6.21 mi10:47:5544:077:0622:00
7:05
#7099
15K
9.32 mi11:10:081:06:207:0722:13
7:09
#7214
20K
12.43 mi11:32:331:28:457:0822:25
7:13
#7169
Half
13.11 mi11:37:191:33:317:084:46
6:59
#7138
25K
15.53 mi11:54:571:51:097:0917:38
7:16
#7087
30K
18.64 mi12:17:542:14:067:1222:57
7:23
#6955
20M
20.00 mi12:28:022:24:147:1310:08
7:27
#6906
21M
21.00 mi12:35:352:31:477:147:33
7:33
#6739
35K
21.75 mi12:40:342:36:467:124:59
6:40
#6603
23M
23.00 mi12:49:162:45:287:128:42
6:57
#6368
24M
24.00 mi12:56:262:52:387:127:10
7:10
#6274
40K
24.85 mi13:03:002:59:127:136:34
7:41
#6289
25.2M
25.20 mi13:05:473:01:597:132:47
8:04
#6295
Finish
26.22 mi13:12:463:08:587:136:59
6:51
#6180
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6981625662567466(Top 28%)6573(Top 43%)6573(Top 124%)
10K6.21 mi3.10 mi7099-1186332-766332-767308(Top 27%)6459(Top 43%)6459(Top 122%)
15K9.32 mi3.11 mi7214-1156406-746406-747466(Top 28%)6573(Top 43%)6573(Top 124%)
20K12.43 mi3.11 mi7169+456371+356371+357179(Top 27%)6337(Top 42%)6337(Top 120%)
Half13.11 mi0.68 mi7138+316351+206351+206446(Top 24%)5822(Top 38%)5822(Top 110%)
25K15.53 mi2.42 mi7087+516298+536298+537094(Top 27%)6212(Top 41%)6212(Top 118%)
30K18.64 mi3.11 mi6955+1326177+1216177+1216525(Top 25%)5748(Top 38%)5748(Top 109%)
20M20.00 mi1.36 mi6906+496134+436134+436484(Top 24%)5634(Top 37%)5634(Top 107%)
21M21.00 mi1.00 mi6739+1675994+1405994+1404835(Top 18%)4362(Top 29%)4362(Top 83%)
35K21.75 mi0.75 mi6603+1365879+1155879+1153384(Top 13%)3154(Top 21%)3154(Top 60%)
23M23.00 mi1.25 mi6368+2355700+1795700+1793539(Top 13%)3280(Top 22%)3280(Top 62%)
24M24.00 mi1.00 mi6274+945619+815619+815551(Top 21%)4813(Top 32%)4813(Top 91%)
40K24.85 mi0.85 mi6289-155616+35616+37794(Top 29%)6108(Top 40%)6108(Top 116%)
25.2M25.20 mi0.35 mi6295-65618-25618-26849(Top 26%)5481(Top 36%)5481(Top 104%)
Finish26.22 mi1.02 mi6180+1155514+1045514+1044375(Top 16%)3833(Top 25%)3833(Top 73%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

7466

Males

6573

M18-39

6573

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7308

Males

6459

M18-39

6459

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

7466

Males

6573

M18-39

6573

15K→20K

9.3 - 12.4 mi

Top 27%
×5stories
+106ft-86ft

Overall

7179

Males

6337

M18-39

6337

20K→Half

12.4 - 13.1 mi

Top 24%
×2stories
+19ft-37ft

Overall

6446

Males

5822

M18-39

5822

Half→25K

13.1 - 15.5 mi

Top 27%
×4stories
+66ft-88ft

Overall

7094

Males

6212

M18-39

6212

25K→30K

15.5 - 18.6 mi

Top 25%
×9stories
+181ft-148ft

Overall

6525

Males

5748

M18-39

5748

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6484

Males

5634

M18-39

5634

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4835

Males

4362

M18-39

4362

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3384

Males

3154

M18-39

3154

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3539

Males

3280

M18-39

3280

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

5551

Males

4813

M18-39

4813

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7794

Males

6108

M18-39

6108

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

6849

Males

5481

M18-39

5481

25.2M→Finish

25.2 - 26.2 mi

Top 16%
×2stories
+22ft-21ft

Overall

4375

Males

3833

M18-39

3833

Passing Analysis

Category:
Athletes Passed
1626
Passed By
825
Net Change
+801
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6981
5K → 10K150268-118#6981#7099
10K → 15K87202-115#7099#7214
15K → 20K13388+45#7214#7169
20K → Half365+31#7169#7138
Half → 25K10958+51#7138#7087
25K → 30K19159+132#7087#6955
30K → 20M8132+49#6955#6906
20M → 21M1714+167#6906#6739
21M → 35K1360+136#6739#6603
35K → 23M2361+235#6603#6368
23M → 24M10915+94#6368#6274
24M → 40K4459-15#6274#6289
40K → 25.2M2127-6#6289#6295
25.2M → Finish1227+115#6295#6180
TOTALS1626825+801
📊

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