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BOSTON MARATHON 2024

Derek Losh

Bib: 10428•M

OH

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 36%
Gender (Male)
#0 / 14578
Top 47%
Masters (Masters Men)
#0 / 9729
Top 38%
Division (M45-49)
#0 / 2218
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:46
Rank: #7090
Start → 5K
7:00/mi
21:46 split
10K· 6.21 mi
43:34
Rank: #6908 (+182)
5K → 10K
7:01/mi
21:48 split
15K· 9.32 mi
1:05:41
Rank: #6896 (+12)
10K → 15K
7:07/mi
22:07 split
20K· 12.43 mi
1:28:00
Rank: #6671 (+225)
15K → 20K
7:11/mi
22:19 split
Half· 13.11 mi
1:32:49
Rank: #6631 (+40)
20K → Half
7:04/mi
4:49 split
25K· 15.53 mi
1:53:13
Rank: #7523 (-892)
Half → 25K
8:25/mi
20:24 split
30K· 18.64 mi
2:20:12
Rank: #8295 (-772)
25K → 30K
8:41/mi
26:59 split
20M
2:32:42
Rank: #8654 (-359)
30K → 20M
9:12/mi
12:30 split
21M
2:43:12
Rank: #9033 (-379)
20M → 21M
10:30/mi
10:30 split
35K· 21.75 mi
2:50:11
Rank: #9262 (-229)
21M → 35K
9:20/mi
6:59 split
23M
3:02:47
Rank: #9758 (-496)
35K → 23M
10:04/mi
12:36 split
24M
3:11:08
Rank: #9663 (+95)
23M → 24M
8:21/mi
8:21 split
40K· 24.85 mi
3:18:17
Rank: #9555 (+108)
24M → 40K
8:22/mi
7:09 split
25.2M
3:21:21
Rank: #9470 (+85)
40K → 25.2M
8:54/mi
3:04 split
Finish· 26.22 mi
3:28:54
Rank: #9255 (+215)
25.2M → Finish
7:25/mi
7:33 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:49
Pace7:05 /mi
2nd Half
Distance13.11 mi
Time1:56:05
Pace8:51 /mi
📊Positive Split: 25.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1421:467:0021:46
7:00
-
10K
6.21 mi11:15:0243:347:0121:48
7:01
+0:01
15K
9.32 mi11:37:091:05:417:0322:07
7:07
+0:06
20K
12.43 mi11:59:281:28:007:0522:19
7:11
+0:04
Half
13.11 mi12:04:171:32:497:054:49
7:04
-0:07
25K
15.53 mi12:24:411:53:137:1720:24
8:25
+1:21
30K
18.64 mi12:51:402:20:127:3126:59
8:41
+0:16
20M
20.00 mi13:04:102:32:427:3812:30
9:12
+0:31
21M
21.00 mi13:14:402:43:127:4610:30
10:30
+1:18
35K
21.75 mi13:21:392:50:117:506:59
9:20
-1:10
23M
23.00 mi13:34:153:02:477:5712:36
10:04
+0:44
24M
24.00 mi13:42:363:11:087:588:21
8:21
-1:43
40K
24.85 mi13:49:453:18:177:597:09
8:22
+0:01
25.2M
25.20 mi13:52:493:21:217:593:04
8:54
+0:32
Finish
26.22 mi14:00:223:28:547:587:33
7:25
-1:29

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

7:00 /mi

Average Pace

7:58 /mi

Slowest Pace

10:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:22

48% of race

Time at Steady Pace

1:05:57

32% of race

Time at Slower Pace

42:35

20% of race

Average Pace: 7:58 /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 mi10:53:1421:467:0021:46
7:00
#7090
10K
6.21 mi11:15:0243:347:0121:48
7:01
#6908
15K
9.32 mi11:37:091:05:417:0322:07
7:07
#6896
20K
12.43 mi11:59:281:28:007:0522:19
7:11
#6671
Half
13.11 mi12:04:171:32:497:054:49
7:04
#6631
25K
15.53 mi12:24:411:53:137:1720:24
8:25
#7523
30K
18.64 mi12:51:402:20:127:3126:59
8:41
#8295
20M
20.00 mi13:04:102:32:427:3812:30
9:12
#8654
21M
21.00 mi13:14:402:43:127:4610:30
10:30
#9033
35K
21.75 mi13:21:392:50:117:506:59
9:20
#9262
23M
23.00 mi13:34:153:02:477:5712:36
10:04
#9758
24M
24.00 mi13:42:363:11:087:588:21
8:21
#9663
40K
24.85 mi13:49:453:18:177:597:09
8:22
#9555
25.2M
25.20 mi13:52:493:21:217:593:04
8:54
#9470
Finish
26.22 mi14:00:223:28:547:587:33
7:25
#9255
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi7090623862386914(Top 27%)6018(Top 41%)6018(Top 271%)
10K6.21 mi3.10 mi6908+1826077+1616077+1616778(Top 27%)5965(Top 41%)5965(Top 269%)
15K9.32 mi3.11 mi6896+126050+276050+276914(Top 27%)6018(Top 41%)6018(Top 271%)
20K12.43 mi3.11 mi6671+2255877+1735877+1736268(Top 25%)5503(Top 38%)5503(Top 248%)
Half13.11 mi0.68 mi6631+405843+345843+346132(Top 24%)5422(Top 37%)5422(Top 244%)
25K15.53 mi2.42 mi7523-8926400-5576400-55712584(Top 49%)8728(Top 60%)8728(Top 394%)
30K18.64 mi3.11 mi8295-7726762-3626762-36211599(Top 45%)8058(Top 55%)8058(Top 363%)
20M20.00 mi1.36 mi8654-3596920-1586920-15813101(Top 51%)8445(Top 58%)8445(Top 381%)
21M21.00 mi1.00 mi9033-3797054-1347054-13414800(Top 58%)9036(Top 62%)9036(Top 407%)
35K21.75 mi0.75 mi9262-2297139-857139-8514817(Top 58%)9026(Top 62%)9026(Top 407%)
23M23.00 mi1.25 mi9758-4967325-1867325-18615667(Top 61%)9388(Top 64%)9388(Top 423%)
24M24.00 mi1.00 mi9663+957227+987227+988544(Top 33%)5792(Top 40%)5792(Top 261%)
40K24.85 mi0.85 mi9555+1087129+987129+987647(Top 30%)5192(Top 36%)5192(Top 234%)
25.2M25.20 mi0.35 mi9470+857074+557074+556055(Top 24%)4314(Top 30%)4314(Top 194%)
Finish26.22 mi1.02 mi9255+2156923+1516923+1515121(Top 20%)3871(Top 27%)3871(Top 175%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21story building
+97ft-345ft

Overall

6914

Males

6018

M45-49

6018

5K→10K

3.1 - 6.2 mi

Top 27%
×5story building
+79ft-138ft

Overall

6778

Males

5965

M45-49

5965

10K→15K

6.2 - 9.3 mi

Top 27%
×3story building
+67ft-78ft

Overall

6914

Males

6018

M45-49

6018

15K→20K

9.3 - 12.4 mi

Top 25%
×5story building
+106ft-86ft

Overall

6268

Males

5503

M45-49

5503

20K→Half

12.4 - 13.1 mi

Top 24%
×2story building
+19ft-37ft

Overall

6132

Males

5422

M45-49

5422

Half→25K

13.1 - 15.5 mi

Top 49%
×4story building
+66ft-88ft

Overall

12584

Males

8728

M45-49

8728

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

11599

Males

8058

M45-49

8058

30K→20M

18.6 - 20.0 mi

Top 51%
×5story building
+64ft-50ft

Overall

13101

Males

8445

M45-49

8445

20M→21M

20.0 - 21.0 mi

Top 58%
×8story building
+106ft-24ft

Overall

14800

Males

9036

M45-49

9036

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

14817

Males

9026

M45-49

9026

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

15667

Males

9388

M45-49

9388

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

8544

Males

5792

M45-49

5792

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

7647

Males

5192

M45-49

5192

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6055

Males

4314

M45-49

4314

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5121

Males

3871

M45-49

3871

Passing Analysis

Category:
Athletes Passed
1654*
Passed By
3818
Net Change
-2165
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7090
5K → 10K282100+182#7090#6908
10K → 15K159147+12#6908#6896
15K → 20K28055+225#6896#6671
20K → Half499+40#6671#6631
Half → 25K40932-892#6631#7523
25K → 30K84856-772#7523#8295
30K → 20M46405-359#8295#8654
20M → 21M41420-379#8654#9033
21M → 35K28257-229#9033#9262
35K → 23M51546-496#9262#9758
23M → 24M141*46+95#9758#9663
24M → 40K14032+108#9663#9555
40K → 25.2M905+85#9555#9470
25.2M → Finish2238+215#9470#9255
TOTALS1654*3818-2165

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

📊

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