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BOSTON MARATHON 2024

Joanna Grzanecka

Bib: 19650•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 49%
Masters (Masters Women)
#0 / 6263
Top 40%
Division (F45-49)
#0 / 1753
Race Day Weather
55°/45°F
scattered clouds

⏱️ 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
8:18/mi
25:48
↑ 97↓ 3451.5%
10K· 6.21 mi
8:22/mi
51:47
↑ 79↓ 1380.4%
15K· 9.32 mi
8:34/mi
1:18:23
↑ 67↓ 78
20K· 12.43 mi
8:45/mi
1:45:33
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:51:22
↑ 19↓ 370.5%
25K· 15.53 mi
8:56/mi
2:13:02
↑ 66↓ 880.2%
30K· 18.64 mi
9:18/mi
2:41:57
↑ 181↓ 1480.2%
20M
9:28/mi
2:54:49
↑ 64↓ 500.2%
21M
10:40/mi
3:05:29
↑ 106↓ 241.6%
35K· 21.75 mi
8:40/mi
3:11:58
↑ 17↓ 861.7%
23M
9:23/mi
3:23:43
↑ 23↓ 630.6%
24M
8:46/mi
3:32:29
↓ 821.3%
40K· 24.85 mi
9:13/mi
3:40:22
↓ 200.3%
25.2M
11:01/mi
3:44:10
↑ 13↓ 160.2%
Finish· 26.22 mi
8:55/mi
3:53:15
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:22
Pace8:30 /mi
2nd Half
Distance13.11 mi
Time2:01:53
Pace9:18 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:2125:488:1825:48
8:18
-
10K
6.21 mi11:44:2051:478:2025:59
8:22
+0:04
15K
9.32 mi12:10:561:18:238:2526:36
8:34
+0:12
20K
12.43 mi12:38:061:45:338:3027:10
8:45
+0:11
Half
13.11 mi12:43:551:51:228:305:49
8:32
-0:13
25K
15.53 mi13:05:352:13:028:3421:40
8:56
+0:24
30K
18.64 mi13:34:302:41:578:4128:55
9:18
+0:22
20M
20.00 mi13:47:222:54:498:4412:52
9:28
+0:10
21M
21.00 mi13:58:023:05:298:5010:40
10:40
+1:12
35K
21.75 mi14:04:313:11:588:506:29
8:40
-2:00
23M
23.00 mi14:16:163:23:438:5111:45
9:23
+0:43
24M
24.00 mi14:25:023:32:298:518:46
8:46
-0:37
40K
24.85 mi14:32:553:40:228:527:53
9:13
+0:27
25.2M
25.20 mi14:36:433:44:108:543:48
11:01
+1:48
Finish
26.22 mi14:45:483:53:158:549:05
8:55
-2:06

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

8:18 /mi

Average Pace

8:54 /mi

Slowest Pace

11:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

57:36

25% of race

Time at Steady Pace

1:47:39

46% of race

Time at Slower Pace

1:08:00

29% of race

Average Pace: 8:54 /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 mi11:18:2125:488:1825:48
8:18
#16682
10K
6.21 mi11:44:2051:478:2025:59
8:22
#16531
15K
9.32 mi12:10:561:18:238:2526:36
8:34
#16554
20K
12.43 mi12:38:061:45:338:3027:10
8:45
#16391
Half
13.11 mi12:43:551:51:228:305:49
8:32
#16351
25K
15.53 mi13:05:352:13:028:3421:40
8:56
#16115
30K
18.64 mi13:34:302:41:578:4128:55
9:18
#15822
20M
20.00 mi13:47:222:54:498:4412:52
9:28
#15720
21M
21.00 mi13:58:023:05:298:5010:40
10:40
#15725
35K
21.75 mi14:04:313:11:588:506:29
8:40
#15566
23M
23.00 mi14:16:163:23:438:5111:45
9:23
#15396
24M
24.00 mi14:25:023:32:298:518:46
8:46
#15205
40K
24.85 mi14:32:553:40:228:527:53
9:13
#15025
25.2M
25.20 mi14:36:433:44:108:543:48
11:01
#15023
Finish
26.22 mi14:45:483:53:158:549:05
8:55
#14954
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi166825972597216725(Top 65%)5982(Top 55%)5982(Top 341%)
10K6.21 mi3.10 mi16531+1515883+895883+8916507(Top 65%)5829(Top 53%)5829(Top 333%)
15K9.32 mi3.11 mi16554-235882+15882+116725(Top 65%)5982(Top 55%)5982(Top 341%)
20K12.43 mi3.11 mi16391+1635797+855797+8516072(Top 63%)5633(Top 52%)5633(Top 321%)
Half13.11 mi0.68 mi16351+405777+205777+2015905(Top 62%)5573(Top 51%)5573(Top 318%)
25K15.53 mi2.42 mi16115+2365683+945683+9415239(Top 60%)5310(Top 49%)5310(Top 303%)
30K18.64 mi3.11 mi15822+2935565+1185565+11814654(Top 57%)5233(Top 48%)5233(Top 299%)
20M20.00 mi1.36 mi15720+1025548+175548+1714408(Top 56%)5349(Top 49%)5349(Top 305%)
21M21.00 mi1.00 mi15725-55594-465594-4615361(Top 60%)6004(Top 55%)6004(Top 342%)
35K21.75 mi0.75 mi15566+1595531+635531+6311683(Top 46%)4130(Top 38%)4130(Top 236%)
23M23.00 mi1.25 mi15396+1705481+505481+5013022(Top 51%)4921(Top 45%)4921(Top 281%)
24M24.00 mi1.00 mi15205+1915398+835398+8310981(Top 43%)3927(Top 36%)3927(Top 224%)
40K24.85 mi0.85 mi15025+1805340+585340+5811922(Top 47%)4506(Top 41%)4506(Top 257%)
25.2M25.20 mi0.35 mi15023+25357-175357-1714594(Top 57%)5839(Top 53%)5839(Top 333%)
Finish26.22 mi1.02 mi14954+695352+55352+513803(Top 54%)5377(Top 49%)5377(Top 307%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

16725

Females

5982

F45-49

5982

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

16507

Females

5829

F45-49

5829

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

16725

Females

5982

F45-49

5982

15K→20K

9.3 - 12.4 mi

Top 63%
×5story building
+106ft-86ft

Overall

16072

Females

5633

F45-49

5633

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

15905

Females

5573

F45-49

5573

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

15239

Females

5310

F45-49

5310

25K→30K

15.5 - 18.6 mi

Top 57%
×9story building
+181ft-148ft

Overall

14654

Females

5233

F45-49

5233

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

14408

Females

5349

F45-49

5349

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

15361

Females

6004

F45-49

6004

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

11683

Females

4130

F45-49

4130

35K→23M

21.8 - 23.0 mi

Top 51%
×5story building
+23ft-63ft

Overall

13022

Females

4921

F45-49

4921

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

10981

Females

3927

F45-49

3927

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

11922

Females

4506

F45-49

4506

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

14594

Females

5839

F45-49

5839

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

13803

Females

5377

F45-49

5377

Passing Analysis

Category:
Athletes Passed
2910
Passed By
1182
Net Change
+1728
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16682
5K → 10K350199+151#16682#16531
10K → 15K233256-23#16531#16554
15K → 20K336173+163#16554#16391
20K → Half6424+40#16391#16351
Half → 25K33195+236#16351#16115
25K → 30K395102+293#16115#15822
30K → 20M17169+102#15822#15720
20M → 21M121126-5#15720#15725
21M → 35K1667+159#15725#15566
35K → 23M20333+170#15566#15396
23M → 24M1932+191#15396#15205
24M → 40K19515+180#15205#15025
40K → 25.2M5149+2#15025#15023
25.2M → Finish10132+69#15023#14954
TOTALS29101182+1728
📊

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