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BOSTON MARATHON 2025

Jaclyn Reiss

Bib: 28249•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken 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
9:22/mi
29:07
↑ 97↓ 3451.5%
10K· 6.21 mi
9:55/mi
59:56
↑ 79↓ 1380.4%
15K· 9.32 mi
10:28/mi
1:32:26
↑ 67↓ 78
20K· 12.43 mi
10:09/mi
2:03:58
↑ 106↓ 860.1%
Half· 13.11 mi
9:54/mi
2:10:43
↑ 19↓ 370.5%
25K· 15.53 mi
10:27/mi
2:36:04
↑ 66↓ 880.2%
30K· 18.64 mi
11:13/mi
3:10:55
↑ 181↓ 1480.2%
20M
10:53/mi
3:25:43
↑ 64↓ 500.2%
21M
11:40/mi
3:37:23
↑ 106↓ 241.6%
35K· 21.75 mi
9:52/mi
3:44:46
↑ 17↓ 861.7%
23M
11:44/mi
3:59:28
↑ 23↓ 630.6%
24M
10:48/mi
4:10:16
↓ 821.3%
40K· 24.85 mi
11:29/mi
4:20:05
↓ 200.3%
25.2M
11:45/mi
4:24:08
↑ 13↓ 160.2%
Finish· 26.22 mi
10:02/mi
4:34:21
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:43
Pace9:58 /mi
2nd Half
Distance13.11 mi
Time2:23:38
Pace10:57 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:5329:079:2229:07
9:22
-
10K
6.21 mi12:21:4259:569:3930:49
9:55
+0:33
15K
9.32 mi12:54:121:32:269:5532:30
10:28
+0:33
20K
12.43 mi13:25:442:03:589:5931:32
10:09
-0:19
Half
13.11 mi13:32:292:10:439:586:45
9:54
-0:15
25K
15.53 mi13:57:502:36:0410:0325:21
10:27
+0:33
30K
18.64 mi14:32:413:10:5510:1534:51
11:13
+0:46
20M
20.00 mi14:47:293:25:4310:1714:48
10:53
-0:20
21M
21.00 mi14:59:093:37:2310:2111:40
11:40
+0:47
35K
21.75 mi15:06:323:44:4610:207:23
9:52
-1:48
23M
23.00 mi15:21:143:59:2810:2514:42
11:44
+1:52
24M
24.00 mi15:32:024:10:1610:2610:48
10:48
-0:56
40K
24.85 mi15:41:514:20:0510:289:49
11:29
+0:41
25.2M
25.20 mi15:45:544:24:0810:294:03
11:45
+0:16
Finish
26.22 mi15:56:074:34:2110:2810:13
10:02
-1:43

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

9:22 /mi

Average Pace

10:28 /mi

Slowest Pace

11:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:24:17

31% of race

Time at Steady Pace

1:40:11

37% of race

Time at Slower Pace

1:29:53

33% of race

Average Pace: 10:28 /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 mi11:50:5329:079:2229:07
9:22
#23823
10K
6.21 mi12:21:4259:569:3930:49
9:55
#24587
15K
9.32 mi12:54:121:32:269:5532:30
10:28
#25090
20K
12.43 mi13:25:442:03:589:5931:32
10:09
#24955
Half
13.11 mi13:32:292:10:439:586:45
9:54
#24930
25K
15.53 mi13:57:502:36:0410:0325:21
10:27
#24816
30K
18.64 mi14:32:413:10:5510:1534:51
11:13
#24737
20M
20.00 mi14:47:293:25:4310:1714:48
10:53
#24655
21M
21.00 mi14:59:093:37:2310:2111:40
11:40
#24575
35K
21.75 mi15:06:323:44:4610:207:23
9:52
#24489
23M
23.00 mi15:21:143:59:2810:2514:42
11:44
#24513
24M
24.00 mi15:32:024:10:1610:2610:48
10:48
#24481
40K
24.85 mi15:41:514:20:0510:289:49
11:29
#24471
25.2M
25.20 mi15:45:544:24:0810:294:03
11:45
#24449
Finish
26.22 mi15:56:074:34:2110:2810:13
10:02
#24395
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi238239600960025856(Top 91%)10708(Top 88%)10708(Top 196%)
10K6.21 mi3.10 mi24587-7649997-3979997-39725146(Top 89%)10314(Top 84%)10314(Top 189%)
15K9.32 mi3.11 mi25090-50310271-27410271-27425856(Top 91%)10708(Top 88%)10708(Top 196%)
20K12.43 mi3.11 mi24955+13510212+5910212+5924535(Top 86%)10006(Top 82%)10006(Top 183%)
Half13.11 mi0.68 mi24930+2510201+1110201+1124627(Top 87%)10074(Top 82%)10074(Top 184%)
25K15.53 mi2.42 mi24816+11410155+4610155+4624286(Top 86%)9902(Top 81%)9902(Top 181%)
30K18.64 mi3.11 mi24737+7910137+1810137+1824407(Top 86%)10080(Top 82%)10080(Top 184%)
20M20.00 mi1.36 mi24655+8210102+3510102+3523390(Top 82%)9625(Top 79%)9625(Top 176%)
21M21.00 mi1.00 mi24575+8010078+2410078+2422973(Top 81%)9489(Top 78%)9489(Top 174%)
35K21.75 mi0.75 mi24489+8610038+4010038+4021556(Top 76%)8811(Top 72%)8811(Top 161%)
23M23.00 mi1.25 mi24513-2410069-3110069-3124663(Top 87%)10427(Top 85%)10427(Top 191%)
24M24.00 mi1.00 mi24481+3210058+1110058+1123571(Top 83%)9909(Top 81%)9909(Top 181%)
40K24.85 mi0.85 mi24471+1010065-710065-724111(Top 85%)10222(Top 84%)10222(Top 187%)
25.2M25.20 mi0.35 mi24449+2210054+1110054+1122706(Top 80%)9524(Top 78%)9524(Top 174%)
Finish26.22 mi1.02 mi24395+5410046+810046+823035(Top 81%)9683(Top 79%)9683(Top 177%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21story building
+97ft-345ft

Overall

25856

Females

10708

F18-39

10708

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

25146

Females

10314

F18-39

10314

10K→15K

6.2 - 9.3 mi

Top 91%
×3story building
+67ft-78ft

Overall

25856

Females

10708

F18-39

10708

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

24535

Females

10006

F18-39

10006

20K→Half

12.4 - 13.1 mi

Top 87%
×2story building
+19ft-37ft

Overall

24627

Females

10074

F18-39

10074

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

24286

Females

9902

F18-39

9902

25K→30K

15.5 - 18.6 mi

Top 86%
×9story building
+181ft-148ft

Overall

24407

Females

10080

F18-39

10080

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

23390

Females

9625

F18-39

9625

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

22973

Females

9489

F18-39

9489

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

21556

Females

8811

F18-39

8811

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

24663

Females

10427

F18-39

10427

23M→24M

23.0 - 24.0 mi

Top 83%
×6story building
+12ft-82ft

Overall

23571

Females

9909

F18-39

9909

24M→40K

24.0 - 24.9 mi

Top 85%
×1story
+6ft-20ft

Overall

24111

Females

10222

F18-39

10222

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

22706

Females

9524

F18-39

9524

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2story building
+22ft-21ft

Overall

23035

Females

9683

F18-39

9683

Passing Analysis

Category:
Athletes Passed
1191
Passed By
1763
Net Change
-572
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23823
5K → 10K42806-764#23823#24587
10K → 15K30533-503#24587#25090
15K → 20K20469+135#25090#24955
20K → Half4823+25#24955#24930
Half → 25K16046+114#24930#24816
25K → 30K17091+79#24816#24737
30K → 20M10523+82#24737#24655
20M → 21M9717+80#24655#24575
21M → 35K860+86#24575#24489
35K → 23M5478-24#24489#24513
23M → 24M5826+32#24513#24481
24M → 40K3828+10#24481#24471
40K → 25.2M297+22#24471#24449
25.2M → Finish7016+54#24449#24395
TOTALS11911763-572
📊

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