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BOSTON MARATHON 2025

Sydney Guloien-Olmsted

Bib: 16409•F

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0:00
/ mi
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Overall
#0 / 28404
Top 35%
Gender (Female)
#0 / 12228
Top 18%
Division (F18-39)
#0 / 5469
Top 31%
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
7:25/mi
23:01
↑ 97↓ 3451.5%
10K· 6.21 mi
7:29/mi
46:16
↑ 79↓ 1380.4%
15K· 9.32 mi
7:33/mi
1:09:44
↑ 67↓ 78
20K· 12.43 mi
7:46/mi
1:33:53
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:39:10
↑ 19↓ 370.5%
25K· 15.53 mi
7:48/mi
1:58:05
↑ 66↓ 880.2%
30K· 18.64 mi
7:44/mi
2:22:08
↑ 181↓ 1480.2%
20M
7:45/mi
2:32:40
↑ 64↓ 500.2%
21M
8:19/mi
2:40:59
↑ 106↓ 241.6%
35K· 21.75 mi
7:20/mi
2:46:28
↑ 17↓ 861.7%
23M
7:30/mi
2:55:52
↑ 23↓ 630.6%
24M
7:21/mi
3:03:13
↓ 821.3%
40K· 24.85 mi
7:17/mi
3:09:27
↓ 200.3%
25.2M
8:07/mi
3:12:15
↑ 13↓ 160.2%
Finish· 26.22 mi
6:53/mi
3:19:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:39:10
Pace7:34 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:40:06
Pace7:38 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:0923:017:2523:01
7:25
-
10K
6.21 mi11:19:2446:167:2723:15
7:29
+0:04
15K
9.32 mi11:42:521:09:447:2923:28
7:33
+0:04
20K
12.43 mi12:07:011:33:537:3324:09
7:46
+0:13
Half
13.11 mi12:12:181:39:107:345:17
7:45
-0:01
25K
15.53 mi12:31:131:58:057:3618:55
7:48
+0:03
30K
18.64 mi12:55:162:22:087:3724:03
7:44
-0:04
20M
20.00 mi13:05:482:32:407:3810:32
7:45
+0:01
21M
21.00 mi13:14:072:40:597:408:19
8:19
+0:34
35K
21.75 mi13:19:362:46:287:395:29
7:20
-0:59
23M
23.00 mi13:29:002:55:527:399:24
7:30
+0:10
24M
24.00 mi13:36:213:03:137:387:21
7:21
-0:09
40K
24.85 mi13:42:353:09:277:376:14
7:17
-0:04
25.2M
25.20 mi13:45:233:12:157:382:48
8:07
+0:50
Finish
26.22 mi13:52:243:19:167:367:01
6:53
-1:14

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

6:53 /mi

Average Pace

7:36 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

26:05

13% of race

Time at Steady Pace

1:19:08

40% of race

Time at Slower Pace

1:34:03

47% of race

Average Pace: 7:36 /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 mi10:56:0923:017:2523:01
7:25
#11421
10K
6.21 mi11:19:2446:167:2723:15
7:29
#11666
15K
9.32 mi11:42:521:09:447:2923:28
7:33
#11830
20K
12.43 mi12:07:011:33:537:3324:09
7:46
#12121
Half
13.11 mi12:12:181:39:107:345:17
7:45
#12200
25K
15.53 mi12:31:131:58:057:3618:55
7:48
#12197
30K
18.64 mi12:55:162:22:087:3724:03
7:44
#11638
20M
20.00 mi13:05:482:32:407:3810:32
7:45
#11354
21M
21.00 mi13:14:072:40:597:408:19
8:19
#11201
35K
21.75 mi13:19:362:46:287:395:29
7:20
#11028
23M
23.00 mi13:29:002:55:527:399:24
7:30
#10712
24M
24.00 mi13:36:213:03:137:387:21
7:21
#10502
40K
24.85 mi13:42:353:09:277:376:14
7:17
#10259
25.2M
25.20 mi13:45:233:12:157:382:48
8:07
#10162
Finish
26.22 mi13:52:243:19:167:367:01
6:53
#9917
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi114212490249012212(Top 43%)3023(Top 25%)3023(Top 55%)
10K6.21 mi3.10 mi11666-2452630-1402630-14011965(Top 42%)2797(Top 23%)2797(Top 51%)
15K9.32 mi3.11 mi11830-1642729-992729-9912212(Top 43%)3023(Top 25%)3023(Top 55%)
20K12.43 mi3.11 mi12121-2912935-2062935-20613049(Top 46%)3572(Top 29%)3572(Top 65%)
Half13.11 mi0.68 mi12200-792989-542989-5413775(Top 48%)3914(Top 32%)3914(Top 72%)
25K15.53 mi2.42 mi12197+33019-303019-3012369(Top 44%)3309(Top 27%)3309(Top 61%)
30K18.64 mi3.11 mi11638+5592801+2182801+2189497(Top 33%)2046(Top 17%)2046(Top 37%)
20M20.00 mi1.36 mi11354+2842698+1032698+1038744(Top 31%)1856(Top 15%)1856(Top 34%)
21M21.00 mi1.00 mi11201+1532659+392659+399344(Top 33%)2303(Top 19%)2303(Top 42%)
35K21.75 mi0.75 mi11028+1732591+682591+687472(Top 26%)1494(Top 12%)1494(Top 27%)
23M23.00 mi1.25 mi10712+3162467+1242467+1246705(Top 24%)1280(Top 10%)1280(Top 23%)
24M24.00 mi1.00 mi10502+2102385+822385+826765(Top 24%)1374(Top 11%)1374(Top 25%)
40K24.85 mi0.85 mi10259+2432306+792306+795657(Top 20%)1008(Top 8%)1008(Top 18%)
25.2M25.20 mi0.35 mi10162+972275+312275+316690(Top 24%)1518(Top 12%)1518(Top 28%)
Finish26.22 mi1.02 mi9917+2452179+962179+965033(Top 18%)889(Top 7%)889(Top 16%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21story building
+97ft-345ft

Overall

12212

Females

3023

F18-39

3023

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11965

Females

2797

F18-39

2797

10K→15K

6.2 - 9.3 mi

Top 43%
×3story building
+67ft-78ft

Overall

12212

Females

3023

F18-39

3023

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

13049

Females

3572

F18-39

3572

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

13775

Females

3914

F18-39

3914

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

12369

Females

3309

F18-39

3309

25K→30K

15.5 - 18.6 mi

Top 33%
×9story building
+181ft-148ft

Overall

9497

Females

2046

F18-39

2046

30K→20M

18.6 - 20.0 mi

Top 31%
×5story building
+64ft-50ft

Overall

8744

Females

1856

F18-39

1856

20M→21M

20.0 - 21.0 mi

Top 33%
×8story building
+106ft-24ft

Overall

9344

Females

2303

F18-39

2303

21M→35K

21.0 - 21.8 mi

Top 26%
×7story building
+17ft-86ft

Overall

7472

Females

1494

F18-39

1494

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6705

Females

1280

F18-39

1280

23M→24M

23.0 - 24.0 mi

Top 24%
×6story building
+12ft-82ft

Overall

6765

Females

1374

F18-39

1374

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5657

Females

1008

F18-39

1008

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6690

Females

1518

F18-39

1518

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2story building
+22ft-21ft

Overall

5033

Females

889

F18-39

889

Passing Analysis

Category:
Athletes Passed
2916*
Passed By
1412
Net Change
+1504
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11421
5K → 10K144389-245#11421#11666
10K → 15K123287-164#11666#11830
15K → 20K118409-291#11830#12121
20K → Half1493-79#12121#12200
Half → 25K154151+3#12200#12197
25K → 30K57920+559#12197#11638
30K → 20M29511+284#11638#11354
20M → 21M18532+153#11354#11201
21M → 35K1774+173#11201#11028
35K → 23M3226+316#11028#10712
23M → 24M2133+210#10712#10502
24M → 40K2441+243#10502#10259
40K → 25.2M992+97#10259#10162
25.2M → Finish249*4+245#10162#9917
TOTALS2916*1412+1504

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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