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SF MARATHON 1ST HALF 2025

Libby Johnson

Bib: 13827•F•Age: 35

Los Altos, CA

0:00
0:00
/ mi
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Overall
#0 / 7100
Top 48%
Gender (Female)
#0 / 3107
Top 36%
Division (F35-39)
#0 / 389
Top 37%
Race Day Weather
56°/46°F
light rain

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
1.81M
10:28/mi
18:57
→ flat
5.34M
10:24/mi
55:38
↑ 80↓ 74
6.15M
10:34/mi
1:04:11
↑ 1262.8%
10.54M
10:26/mi
1:50:00
↑ 230↓ 3610.6%
11.05M
12:09/mi
1:56:12
↑ 1726.4%
Finish· 13.11 mi
10:06/mi
2:17:00
↑ 97↓ 1140.2%

The Course

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Half Splits

1st Half· via 6.15MFaster
Distance6.15 mi
Time1:04:11
Pace10:26 /mi
2nd Half
Distance6.96 mi
Time1:12:49
Pace10:28 /mi
📊Positive Split: 13.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.81M
1.81 mi07:01:4818:5710:2818:57
10:28
-
5.34M
5.34 mi07:38:2955:3810:2536:41
10:24
-0:04
6.15M
6.15 mi07:47:021:04:1110:268:33
10:34
+0:10
10.54M
10.54 mi08:32:511:50:0010:2645:49
10:26
-0:08
11.05M
11.05 mi08:39:031:56:1210:316:12
12:09
+1:43
Finish
13.11 mi08:59:512:17:0010:2720:48
10:06
-2:03

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

10:06 /mi

Average Pace

10:27 /mi

Slowest Pace

12:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

20:48

15% of race

Time at Steady Pace

1:50:00

80% of race

Time at Slower Pace

6:12

5% of race

Average Pace: 10:27 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
1.81M
1.81 mi07:01:4818:5710:2818:57
10:28
#4840
5.34M
5.34 mi07:38:2955:3810:2536:41
10:24
#4259
6.15M
6.15 mi07:47:021:04:1110:268:33
10:34
#4108
10.54M
10.54 mi08:32:511:50:0010:2645:49
10:26
#3793
11.05M
11.05 mi08:39:031:56:1210:316:12
12:09
#3609
Finish
13.11 mi08:59:512:17:0010:2720:48
10:06
#3408
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF35-39Seg. OverallSeg. FemalesSeg. F35-39
1.81M1.81 mi1.81 mi484018142304840(Top 68%)1814(Top 58%)230(Top 59%)
5.34M5.34 mi3.53 mi4259+5811518+296195+354059(Top 57%)1407(Top 45%)183(Top 47%)
6.15M6.15 mi0.81 mi4108+1511443+75188+73481(Top 49%)1136(Top 37%)151(Top 39%)
10.54M10.54 mi4.39 mi3793+3151292+151165+233501(Top 49%)1160(Top 37%)148(Top 38%)
11.05M11.05 mi0.51 mi3609+1841200+92158+71781(Top 25%)446(Top 14%)70(Top 18%)
Finish13.11 mi2.06 mi3408+2011124+76145+132612(Top 37%)817(Top 26%)111(Top 29%)

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 68%
~flat
+4ft-3ft

Overall

4840

Females

1814

F35-39

230

1.81M→5.34M

1.8 - 5.3 mi

Top 57%
×4story building
+80ft-74ft

Overall

4059

Females

1407

F35-39

183

5.34M→6.15M

5.3 - 6.2 mi

Top 49%
×10story building
+126ft-4ft

Overall

3481

Females

1136

F35-39

151

6.15M→10.54M

6.2 - 10.5 mi

Top 49%
×21story building
+230ft-361ft

Overall

3501

Females

1160

F35-39

148

10.54M→11.05M

10.5 - 11.1 mi

Top 25%
×14story building
+172ft-0ft

Overall

1781

Females

446

F35-39

70

11.05M→Finish

11.1 - 13.1 mi

Top 37%
×7story building
+97ft-114ft

Overall

2612

Females

817

F35-39

111

Passing Analysis

Category:
Athletes Passed
1565*
Passed By
133
Net Change
+1432
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.81M----#4840
1.81M → 5.34M633*52+581#4840#4259
5.34M → 6.15M16514+151#4259#4108
6.15M → 10.54M371*56+315#4108#3793
10.54M → 11.05M1884+184#3793#3609
11.05M → Finish208*7+201#3609#3408
TOTALS1565*133+1432

* 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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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

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