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BOSTON MARATHON 2025

Karyn Kroljic-Simmonds

CA

Bib: 25117 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 46%
Division (F65-69)
#0 / 222
Top 8%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:09/mi
28:27
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:38/mi
55:15
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:35/mi
1:21:56
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:43/mi
1:49:01
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:29/mi
1:54:48
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:43/mi
2:15:55
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:49/mi
2:43:20
↑ 181↓ 1480.2%
138 ft elev
20M
8:47/mi
2:55:16
↑ 64↓ 500.2%
148 ft elev
21M
9:19/mi
3:04:35
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
8:57/mi
3:11:17
↑ 17↓ 861.7%
156 ft elev
23M
8:50/mi
3:22:20
↑ 23↓ 630.6%
116 ft elev
24M
9:06/mi
3:31:26
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:30/mi
3:38:42
↓ 200.3%
20 ft elev
25.2M
9:46/mi
3:42:04
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:03/mi
3:50:16
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:54:48
Pace8:45 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:55:28
Pace8:48 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:29:2028:279:0928:27
9:09
-
10K
6.21 mi11:56:0855:158:5326:48
8:38
-0:31
15K
9.32 mi12:22:491:21:568:4726:41
8:35
-0:03
20K
12.43 mi12:49:541:49:018:4627:05
8:43
+0:08
Half
13.11 mi12:55:411:54:488:455:47
8:29
-0:14
25K
15.53 mi13:16:482:15:558:4521:07
8:43
+0:14
30K
18.64 mi13:44:132:43:208:4627:25
8:49
+0:06
20M
20.00 mi13:56:092:55:168:4611:56
8:47
-0:02
21M
21.00 mi14:05:283:04:358:479:19
9:19
+0:32
35K
21.75 mi14:12:103:11:178:486:42
8:57
-0:22
23M
23.00 mi14:23:133:22:208:4811:03
8:50
-0:07
24M
24.00 mi14:32:193:31:268:499:06
9:06
+0:16
40K
24.85 mi14:39:353:38:428:487:16
8:30
-0:36
25.2M
25.20 mi14:42:573:42:048:493:22
9:46
+1:16
Finish
26.22 mi14:51:093:50:168:478:12
8:03
-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

8:03 /mi

Average Pace

8:47 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

47:56

21% of race

Time at Steady Pace

2:12:06

57% of race

Time at Slower Pace

50:14

22% of race

Average Pace: 8:47 /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 mi11:29:2028:279:0928:27
9:09
#23068
10K
6.21 mi11:56:0855:158:5326:48
8:38
#21911
15K
9.32 mi12:22:491:21:568:4726:41
8:35
#21203
20K
12.43 mi12:49:541:49:018:4627:05
8:43
#20781
Half
13.11 mi12:55:411:54:488:455:47
8:29
#20707
25K
15.53 mi13:16:482:15:558:4521:07
8:43
#20354
30K
18.64 mi13:44:132:43:208:4627:25
8:49
#19663
20M
20.00 mi13:56:092:55:168:4611:56
8:47
#19366
21M
21.00 mi14:05:283:04:358:479:19
9:19
#19119
35K
21.75 mi14:12:103:11:178:486:42
8:57
#19091
23M
23.00 mi14:23:133:22:208:4811:03
8:50
#18852
24M
24.00 mi14:32:193:31:268:499:06
9:06
#18823
40K
24.85 mi14:39:353:38:428:487:16
8:30
#18610
25.2M
25.20 mi14:42:573:42:048:493:22
9:46
#18556
Finish
26.22 mi14:51:093:50:168:478:12
8:03
#18379
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF65-69Seg. OverallSeg. FemalesSeg. F65-69
5K3.11 mi3.11 mi230689205920519870(Top 70%)7371(Top 60%)7371(Top 3320%)
10K6.21 mi3.10 mi21911+11578554+6518554+65120485(Top 72%)7732(Top 63%)7732(Top 3483%)
15K9.32 mi3.11 mi21203+7088149+4058149+40519870(Top 70%)7371(Top 60%)7371(Top 3320%)
20K12.43 mi3.11 mi20781+4227915+2347915+23419505(Top 69%)7203(Top 59%)7203(Top 3245%)
Half13.11 mi0.68 mi20707+747877+387877+3819099(Top 67%)6958(Top 57%)6958(Top 3134%)
25K15.53 mi2.42 mi20354+3537688+1897688+18918462(Top 65%)6685(Top 55%)6685(Top 3011%)
30K18.64 mi3.11 mi19663+6917331+3577331+35716758(Top 59%)5900(Top 48%)5900(Top 2658%)
20M20.00 mi1.36 mi19366+2977190+1417190+14115599(Top 55%)5368(Top 44%)5368(Top 2418%)
21M21.00 mi1.00 mi19119+2477063+1277063+12715273(Top 54%)5337(Top 44%)5337(Top 2404%)
35K21.75 mi0.75 mi19091+287068-57068-518038(Top 64%)6920(Top 57%)6920(Top 3117%)
23M23.00 mi1.25 mi18852+2396967+1016967+10115278(Top 54%)5488(Top 45%)5488(Top 2472%)
24M24.00 mi1.00 mi18823+296970-36970-317905(Top 63%)6982(Top 57%)6982(Top 3145%)
40K24.85 mi0.85 mi18610+2136885+856885+8513486(Top 47%)4713(Top 39%)4713(Top 2123%)
25.2M25.20 mi0.35 mi18556+546867+186867+1815984(Top 56%)6089(Top 50%)6089(Top 2743%)
Finish26.22 mi1.02 mi18379+1776791+766791+7613253(Top 47%)4593(Top 38%)4593(Top 2069%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

19870

Females

7371

F65-69

7371

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20485

Females

7732

F65-69

7732

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

19870

Females

7371

F65-69

7371

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

19505

Females

7203

F65-69

7203

20K→Half

12.4 - 13.1 mi

Top 67%
×2story building
+19ft-37ft

Overall

19099

Females

6958

F65-69

6958

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

18462

Females

6685

F65-69

6685

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

16758

Females

5900

F65-69

5900

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

15599

Females

5368

F65-69

5368

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

15273

Females

5337

F65-69

5337

21M→35K

21.0 - 21.8 mi

Top 64%
×7story building
+17ft-86ft

Overall

18038

Females

6920

F65-69

6920

35K→23M

21.8 - 23.0 mi

Top 54%
×5story building
+23ft-63ft

Overall

15278

Females

5488

F65-69

5488

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

17905

Females

6982

F65-69

6982

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

13486

Females

4713

F65-69

4713

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15984

Females

6089

F65-69

6089

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2story building
+22ft-21ft

Overall

13253

Females

4593

F65-69

4593

Passing Analysis

Category:
Athletes Passed
4894
Passed By
205
Net Change
+4689
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23068
5K → 10K11658+1157#23068#21911
10K → 15K73224+708#21911#21203
15K → 20K44422+422#21203#20781
20K → Half795+74#20781#20707
Half → 25K36512+353#20707#20354
25K → 30K70211+691#20354#19663
30K → 20M2992+297#19663#19366
20M → 21M25811+247#19366#19119
21M → 35K6638+28#19119#19091
35K → 23M2423+239#19091#18852
23M → 24M7950+29#18852#18823
24M → 40K2163+213#18823#18610
40K → 25.2M6410+54#18610#18556
25.2M → Finish1836+177#18556#18379
TOTALS4894205+4689
📊

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