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BOSTON MARATHON 2024

Karin Nelson

Bib: 20233•F

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Top 41%
Division (F45-49)
#0 / 1753
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:20
Rank: #17641
Start → 5K
8:29/mi
26:20 split
10K· 6.21 mi
52:57
Rank: #17628 (+13)
5K → 10K
8:34/mi
26:37 split
15K· 9.32 mi
1:20:06
Rank: #17642 (-14)
10K → 15K
8:44/mi
27:09 split
20K· 12.43 mi
1:47:49
Rank: #17371 (+271)
15K → 20K
8:55/mi
27:43 split
Half· 13.11 mi
1:53:34
Rank: #17232 (+139)
20K → Half
8:26/mi
5:45 split
25K· 15.53 mi
2:16:05
Rank: #17154 (+78)
Half → 25K
9:17/mi
22:31 split
30K· 18.64 mi
2:44:23
Rank: #16492 (+662)
25K → 30K
9:07/mi
28:18 split
20M
2:56:25
Rank: #16131 (+361)
30K → 20M
8:51/mi
12:02 split
21M
3:06:16
Rank: #15912 (+219)
20M → 21M
9:51/mi
9:51 split
35K· 21.75 mi
3:12:55
Rank: #15802 (+110)
21M → 35K
8:53/mi
6:39 split
23M
3:24:30
Rank: #15573 (+229)
35K → 23M
9:15/mi
11:35 split
24M
3:33:57
Rank: #15521 (+52)
23M → 24M
9:27/mi
9:27 split
40K· 24.85 mi
3:42:47
Rank: #15544 (-23)
24M → 40K
10:20/mi
8:50 split
25.2M
3:46:14
Rank: #15448 (+96)
40K → 25.2M
10:00/mi
3:27 split
Finish· 26.22 mi
3:54:29
Rank: #15197 (+251)
25.2M → Finish
8:06/mi
8:15 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:34
Pace8:40 /mi
2nd Half
Distance13.11 mi
Time2:00:55
Pace9:13 /mi
📊Positive Split: 6.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:5026:208:2926:20
8:29
-
10K
6.21 mi11:48:2752:578:3126:37
8:34
+0:05
15K
9.32 mi12:15:361:20:068:3627:09
8:44
+0:10
20K
12.43 mi12:43:191:47:498:4127:43
8:55
+0:11
Half
13.11 mi12:49:041:53:348:405:45
8:26
-0:29
25K
15.53 mi13:11:352:16:058:4622:31
9:17
+0:51
30K
18.64 mi13:39:532:44:238:4928:18
9:07
-0:10
20M
20.00 mi13:51:552:56:258:4912:02
8:51
-0:16
21M
21.00 mi14:01:463:06:168:529:51
9:51
+1:00
35K
21.75 mi14:08:253:12:558:526:39
8:53
-0:58
23M
23.00 mi14:20:003:24:308:5311:35
9:15
+0:22
24M
24.00 mi14:29:273:33:578:559:27
9:27
+0:12
40K
24.85 mi14:38:173:42:478:588:50
10:20
+0:53
25.2M
25.20 mi14:41:443:46:148:593:27
10:00
-0:20
Finish
26.22 mi14:49:593:54:298:578:15
8:06
-1:54

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

8:06 /mi

Average Pace

8:57 /mi

Slowest Pace

10:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:06:57

29% of race

Time at Steady Pace

1:41:51

43% of race

Time at Slower Pace

1:05:41

28% of race

Average Pace: 8:57 /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 mi11:21:5026:208:2926:20
8:29
#17641
10K
6.21 mi11:48:2752:578:3126:37
8:34
#17628
15K
9.32 mi12:15:361:20:068:3627:09
8:44
#17642
20K
12.43 mi12:43:191:47:498:4127:43
8:55
#17371
Half
13.11 mi12:49:041:53:348:405:45
8:26
#17232
25K
15.53 mi13:11:352:16:058:4622:31
9:17
#17154
30K
18.64 mi13:39:532:44:238:4928:18
9:07
#16492
20M
20.00 mi13:51:552:56:258:4912:02
8:51
#16131
21M
21.00 mi14:01:463:06:168:529:51
9:51
#15912
35K
21.75 mi14:08:253:12:558:526:39
8:53
#15802
23M
23.00 mi14:20:003:24:308:5311:35
9:15
#15573
24M
24.00 mi14:29:273:33:578:559:27
9:27
#15521
40K
24.85 mi14:38:173:42:478:588:50
10:20
#15544
25.2M
25.20 mi14:41:443:46:148:593:27
10:00
#15448
Finish
26.22 mi14:49:593:54:298:578:15
8:06
#15197
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi176416550655017680(Top 69%)6528(Top 60%)6528(Top 372%)
10K6.21 mi3.10 mi17628+136515+356515+3517677(Top 69%)6532(Top 60%)6532(Top 373%)
15K9.32 mi3.11 mi17642-146512+36512+317680(Top 69%)6528(Top 60%)6528(Top 372%)
20K12.43 mi3.11 mi17371+2716387+1256387+12516991(Top 67%)6160(Top 56%)6160(Top 351%)
Half13.11 mi0.68 mi17232+1396322+656322+6515345(Top 60%)5244(Top 48%)5244(Top 299%)
25K15.53 mi2.42 mi17154+786288+346288+3416757(Top 66%)6129(Top 56%)6129(Top 350%)
30K18.64 mi3.11 mi16492+6625965+3235965+32313775(Top 54%)4721(Top 43%)4721(Top 269%)
20M20.00 mi1.36 mi16131+3615785+1805785+18011406(Top 45%)3715(Top 34%)3715(Top 212%)
21M21.00 mi1.00 mi15912+2195701+845701+8412385(Top 48%)4466(Top 41%)4466(Top 255%)
35K21.75 mi0.75 mi15802+1105660+415660+4112810(Top 50%)4714(Top 43%)4714(Top 269%)
23M23.00 mi1.25 mi15573+2295582+785582+7812414(Top 49%)4626(Top 42%)4626(Top 264%)
24M24.00 mi1.00 mi15521+525587-55587-514291(Top 56%)5585(Top 51%)5585(Top 319%)
40K24.85 mi0.85 mi15544-235626-395626-3916156(Top 63%)6573(Top 60%)6573(Top 375%)
25.2M25.20 mi0.35 mi15448+965590+365590+3611038(Top 43%)4136(Top 38%)4136(Top 236%)
Finish26.22 mi1.02 mi15197+2515474+1165474+1169191(Top 36%)3154(Top 29%)3154(Top 180%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

17680

Females

6528

F45-49

6528

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

17677

Females

6532

F45-49

6532

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

17680

Females

6528

F45-49

6528

15K→20K

9.3 - 12.4 mi

Top 67%
×5story building
+106ft-86ft

Overall

16991

Females

6160

F45-49

6160

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

15345

Females

5244

F45-49

5244

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

16757

Females

6129

F45-49

6129

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

13775

Females

4721

F45-49

4721

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

11406

Females

3715

F45-49

3715

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

12385

Females

4466

F45-49

4466

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

12810

Females

4714

F45-49

4714

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

12414

Females

4626

F45-49

4626

23M→24M

23.0 - 24.0 mi

Top 56%
×6story building
+12ft-82ft

Overall

14291

Females

5585

F45-49

5585

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16156

Females

6573

F45-49

6573

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

11038

Females

4136

F45-49

4136

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9191

Females

3154

F45-49

3154

Passing Analysis

Category:
Athletes Passed
3481
Passed By
1037
Net Change
+2444
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17641
5K → 10K292279+13#17641#17628
10K → 15K237251-14#17628#17642
15K → 20K398127+271#17642#17371
20K → Half1423+139#17371#17232
Half → 25K234156+78#17232#17154
25K → 30K67715+662#17154#16492
30K → 20M3643+361#16492#16131
20M → 21M23415+219#16131#15912
21M → 35K12717+110#15912#15802
35K → 23M25223+229#15802#15573
23M → 24M10553+52#15573#15521
24M → 40K6588-23#15521#15544
40K → 25.2M1015+96#15544#15448
25.2M → Finish2532+251#15448#15197
TOTALS34811037+2444
📊

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