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BOSTON MARATHON 2024

Iwona Zielinska

Bib: 16438•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Top 45%
Gender (Female)
#0 / 10924
Top 32%
Masters (Masters Women)
#0 / 6263
Top 19%
Division (F45-49)
#0 / 1753
Top 23%
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
7:45/mi
24:04
↑ 97↓ 3451.5%
10K· 6.21 mi
7:53/mi
48:32
↑ 79↓ 1380.4%
15K· 9.32 mi
8:00/mi
1:13:23
↑ 67↓ 78
20K· 12.43 mi
8:14/mi
1:38:59
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:44:28
↑ 19↓ 370.5%
25K· 15.53 mi
8:21/mi
2:04:43
↑ 66↓ 880.2%
30K· 18.64 mi
8:51/mi
2:32:12
↑ 181↓ 1480.2%
20M
8:50/mi
2:44:12
↑ 64↓ 500.2%
21M
9:25/mi
2:53:37
↑ 106↓ 241.6%
35K· 21.75 mi
8:15/mi
2:59:47
↑ 17↓ 861.7%
23M
8:38/mi
3:10:36
↑ 23↓ 630.6%
24M
8:27/mi
3:19:03
↓ 821.3%
40K· 24.85 mi
8:33/mi
3:26:22
↓ 200.3%
25.2M
9:37/mi
3:29:41
↑ 13↓ 160.2%
Finish· 26.22 mi
8:25/mi
3:38:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:28
Pace7:58 /mi
2nd Half
Distance13.11 mi
Time1:53:48
Pace8:41 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0824:047:4524:04
7:45
-
10K
6.21 mi11:38:3648:327:4924:28
7:53
+0:08
15K
9.32 mi12:03:271:13:237:5224:51
8:00
+0:07
20K
12.43 mi12:29:031:38:597:5825:36
8:14
+0:14
Half
13.11 mi12:34:321:44:287:585:29
8:02
-0:12
25K
15.53 mi12:54:472:04:438:0220:15
8:21
+0:19
30K
18.64 mi13:22:162:32:128:1027:29
8:51
+0:30
20M
20.00 mi13:34:162:44:128:1312:00
8:50
-0:01
21M
21.00 mi13:43:412:53:378:169:25
9:25
+0:35
35K
21.75 mi13:49:512:59:478:166:10
8:15
-1:10
23M
23.00 mi14:00:403:10:368:1710:49
8:38
+0:23
24M
24.00 mi14:09:073:19:038:188:27
8:27
-0:11
40K
24.85 mi14:16:263:26:228:187:19
8:33
+0:06
25.2M
25.20 mi14:19:453:29:418:193:19
9:37
+1:04
Finish
26.22 mi14:28:203:38:168:208:35
8:25
-1:12

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

7:45 /mi

Average Pace

8:20 /mi

Slowest Pace

9:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:18:52

36% of race

Time at Steady Pace

1:27:11

40% of race

Time at Slower Pace

52:13

24% of race

Average Pace: 8:19 /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 mi11:14:0824:047:4524:04
7:45
#12690
10K
6.21 mi11:38:3648:327:4924:28
7:53
#12960
15K
9.32 mi12:03:271:13:237:5224:51
8:00
#13094
20K
12.43 mi12:29:031:38:597:5825:36
8:14
#13129
Half
13.11 mi12:34:321:44:287:585:29
8:02
#13109
25K
15.53 mi12:54:472:04:438:0220:15
8:21
#12921
30K
18.64 mi13:22:162:32:128:1027:29
8:51
#12748
20M
20.00 mi13:34:162:44:128:1312:00
8:50
#12583
21M
21.00 mi13:43:412:53:378:169:25
9:25
#12407
35K
21.75 mi13:49:512:59:478:166:10
8:15
#12260
23M
23.00 mi14:00:403:10:368:1710:49
8:38
#12029
24M
24.00 mi14:09:073:19:038:188:27
8:27
#11884
40K
24.85 mi14:16:263:26:228:187:19
8:33
#11683
25.2M
25.20 mi14:19:453:29:418:193:19
9:37
#11622
Finish
26.22 mi14:28:203:38:168:208:35
8:25
#11554
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi126903536353613452(Top 53%)4057(Top 37%)4057(Top 231%)
10K6.21 mi3.10 mi12960-2703707-1713707-17113257(Top 52%)3911(Top 36%)3911(Top 223%)
15K9.32 mi3.11 mi13094-1343812-1053812-10513452(Top 53%)4057(Top 37%)4057(Top 231%)
20K12.43 mi3.11 mi13129-353853-413853-4113365(Top 52%)4038(Top 37%)4038(Top 230%)
Half13.11 mi0.68 mi13109+203854-13854-113032(Top 51%)3900(Top 36%)3900(Top 222%)
25K15.53 mi2.42 mi12921+1883765+893765+8912275(Top 48%)3657(Top 33%)3657(Top 209%)
30K18.64 mi3.11 mi12748+1733763+23763+212436(Top 49%)3963(Top 36%)3963(Top 226%)
20M20.00 mi1.36 mi12583+1653732+313732+3111240(Top 44%)3611(Top 33%)3611(Top 206%)
21M21.00 mi1.00 mi12407+1763696+363696+3610459(Top 41%)3463(Top 32%)3463(Top 198%)
35K21.75 mi0.75 mi12260+1473656+403656+409271(Top 36%)2857(Top 26%)2857(Top 163%)
23M23.00 mi1.25 mi12029+2313587+693587+699234(Top 36%)2999(Top 27%)2999(Top 171%)
24M24.00 mi1.00 mi11884+1453552+353552+359192(Top 36%)3036(Top 28%)3036(Top 173%)
40K24.85 mi0.85 mi11683+2013495+573495+578695(Top 34%)2927(Top 27%)2927(Top 167%)
25.2M25.20 mi0.35 mi11622+613482+133482+139278(Top 36%)3293(Top 30%)3293(Top 188%)
Finish26.22 mi1.02 mi11554+683493-113493-1111108(Top 43%)4033(Top 37%)4033(Top 230%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

13452

Females

4057

F45-49

4057

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

13257

Females

3911

F45-49

3911

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

13452

Females

4057

F45-49

4057

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

13365

Females

4038

F45-49

4038

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

13032

Females

3900

F45-49

3900

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

12275

Females

3657

F45-49

3657

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

12436

Females

3963

F45-49

3963

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

11240

Females

3611

F45-49

3611

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10459

Females

3463

F45-49

3463

21M→35K

21.0 - 21.8 mi

Top 36%
×7story building
+17ft-86ft

Overall

9271

Females

2857

F45-49

2857

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9234

Females

2999

F45-49

2999

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

9192

Females

3036

F45-49

3036

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

8695

Females

2927

F45-49

2927

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9278

Females

3293

F45-49

3293

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

11108

Females

4033

F45-49

4033

Passing Analysis

Category:
Athletes Passed
2791
Passed By
1655
Net Change
+1136
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12690
5K → 10K180450-270#12690#12960
10K → 15K172306-134#12960#13094
15K → 20K251286-35#13094#13129
20K → Half6949+20#13129#13109
Half → 25K334146+188#13109#12921
25K → 30K363190+173#12921#12748
30K → 20M21146+165#12748#12583
20M → 21M22145+176#12583#12407
21M → 35K16114+147#12407#12260
35K → 23M25524+231#12260#12029
23M → 24M16621+145#12029#11884
24M → 40K2098+201#11884#11683
40K → 25.2M7817+61#11683#11622
25.2M → Finish12153+68#11622#11554
TOTALS27911655+1136
📊

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